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The popularization and application of cable holder made of SMC material
Release time:
2023-07-01
With the rapid development of the power grid, the insulation level of power cables is also improving, large cross-section cable transmission capacity of more than 1 kA has been very common. In the cable line project, most of the traditional steel structure cable bracket, due to the cable bracket for a long time in the water in the cable trench as well as the cable shaft humid and other harsh environments, the cable bracket, although galvanized, but still inevitably suffer from corrosion, affecting the safe operation of the cable. In addition, with the increasing capacity of cable transmission, in the role of high current, the frequency electromagnetic field in the traditional cable steel bracket eddy current loss can not be ignored, mainly cable steel bracket long-term heat on the service life of the cable sheath and cable transmission capacity has a certain impact. Therefore, the development of a corrosion-resistant, low eddy current loss fiberglass reinforced plastic cable bracket is on the agenda.
1 The characteristics of fiberglass reinforced plastic FRP to glass fiber and its glass cloth, glass tape, glass mat, glass yarn and other products as reinforcing materials, phenolic plastic, epoxy resin and polyvinyl acetate resin as a matrix material of a high-strength composite material, commonly known as glass fiber reinforced plastic (Fiber ReinforeedPlastieS, FRP). Its application range is wide, but there are shortcomings. 1) low modulus of elasticity FRP modulus of elasticity than wood is 2 times larger than steel 10 times smaller than the rigidity of the product structure is insufficient, but can be made into a thin-shell structure or sandwich structure, you can also use high-modulus fibers or through the reinforcement of measures to make up for it.
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2023-07-01
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