Bending-resistant heat insulation waterproof railway cable
A technology that is resistant to bending and railways. It is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc. It can solve the problems of poor water resistance of railway cables, relieve mechanical bending stress, and reduce shocks. Probability of wear, effect of cost reduction
Active Publication Date: 2018-01-26
CENTURAY TECH CO LTD
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Problems solved by technology
[0004] Aiming at the problem of poor water resistance of railway cables in actual use, the first purpose of the present invention is to propose a bending-resistant and heat-insulated railway cable, which can effectively improve the water resistance of railway cables and at the same time improve the bending resistance of railway cables And thermal insulation performance, the specific scheme is as follows:
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[0026] The present invention will be further described in detail below with reference to the examples and figures, but the embodiments of the present invention are not limited thereto.
[0027] Such as figure 1 As shown, a bending-resistant, heat-insulated and waterproof railway cable includes a core 1 and a core shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a water-blocking layer 5, and a core shielding layer arranged outside the core 1 in sequence. The wrapping aluminum strip 6 and the outer sheath 7 on the water layer 5. combine figure 2 As shown, the above-mentioned water blocking layer 5 includes at least three layers of insulating adhesive layers 8, and porous spherical conductive carbon powder particles 9 are filled between two adjacent layers of insulating adhesive layers 8, and the diameter of the carbon powder particles 9 is not larger than that of the corresponding 1 / 2 of the distance between two adjacent layers of insulating adhesive...
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The invention discloses a bending-resistant heat insulation waterproof railway cable. The cable comprises a cable core; a cable core shielding layer, an insulating layer, an insulation shielding layer, and a waterproof layer arranged outside the cable core in sequence; and a wrapped aluminum tape and an outer sheath arranged on the waterproof layer. The waterproof layer comprises at least three layers of insulation adhesive layers, conductive carbon powder particles in porous spherical shapes are filled between each two adjacent insulation adhesive layers, the diameter of the carbon powder particles is not greater than 1 / 2 of the distance between each two adjacent insulation adhesive layers, the internal part(s) of one or two insulation adhesive layers located at the middle position of thewaterproof layer is / are provided with age-proof cavities, the cross sections of the cavities are integrally in the sector shapes, the central points of the sectors are arranged opposite to the cablecore, and the cavities are filled with insulating layer anti-aging agents. According to the cable, iron powder is added to the carbon powder particles so that the field intensity of an electric fieldcan be concentrated near the carbon powder particles instead of impurities of the insulation adhesive layers, the breakdown probability of the insulating layer or the insulation adhesive layers can bereduced, vapor and oxygen can be simultaneously absorbed, and the service lifetime of the cable is prolonged.
Description
technical field [0001] The invention relates to the technical field of cables, in particular to a bending-resistant, heat-insulating and waterproof railway cable. Background technique [0002] Railway cables are power cables used on railway lines. The performance of the above-mentioned cables directly affects the operation safety of railways. Therefore, there are higher life performance requirements for railway cables. Due to the relatively harsh environment of railway cables. At present, the biggest factor affecting the life of railway cables is the anti-aging performance and water resistance performance of the cable. Among the above two factors, the aging speed of the cable (mainly the aging of the cable insulation layer) is mostly related to the temperature and radiation intensity of the environment. After the surface of the cable is cracked, the water vapor in the external environment enters the inside of the cable, which directly affects the use of the cable. In addit...
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IPC IPC(8): H01B7/282H01B7/02H01B3/02H01B9/02H01B7/18H01B7/42
Inventor 金良赞寇亚亚郭姣刘奇詹国立
Owner CENTURAY TECH CO LTD