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CN105375394A 一种具有过渡点温度特性电力导线的设计安装方法 无效 - 驳回

一种具有过渡点温度特性电力导线的设计安装方法
摘要：
一种具有过渡点温度特性电力导线的设计安装方法属于架空导线安装技术领域，尤其涉及一种具有过渡点温度特性电力导线的设计安装方法。本发明提供一种安装效果好的具有过渡点温度特性电力导线的设计安装方法。本发明包括以下步骤：导线在无张力、制造温度t0状态下的长度为l0，将这段导线架设，导线的张力为T、温度为t、线长为L，根据材料力学中弹性变形的虎克定律，得到式中：ε为张力和温差引起的导线单位长度的伸长；E为导线综合弹性模量(N/mm2)；A为导线截面积(mm2)；α为导线综合膨胀系数(1/℃)；t0为导线的制造温度；导线的线长增加量等于弹性伸长量与温度伸长量之和；芯线和铝线的伸长量相同。
摘要（英）：

The invention discloses a design and installation method for a power wire with transition point temperature characteristics, belongs to the technical field of installation of overhead wires, particularly relates to a design and installation method for a power wire with transition point temperature characteristics and provides the design and installation method for the power wire with the transition point temperature characteristics and a good installation effect. The method comprises the steps as follows: the length of the wire is l<0> in a tension-free state at a manufacturing temperature t<0>; the wire is installed; the tension of the wire is T, the temperature is t and the length is L; a formula as shown in the specification is obtained according to the hooke's law of elastic deformation in material mechanics; in the formula, epsilon is the elongation of the unit length of the wire caused by the tension and a temperature difference; E is an integrated elasticity modulus (N/mm<2>) of the wire; A is a sectional area (mm<2>) of the wire; alpha is a comprehensive expansion coefficient (1/DEG C) of the wire; t<0> is the manufacturing temperature of the wire; the wire length increment of the wire is equal to the sum of elastic elongation and temperature elongation; and the elongation of a core wire is equal to that of an aluminum wire.

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