成缆填充面积的计算、填充材料用量的计算.pptx

成缆填充面积的计算、填充材料用量的计算

芯数线芯排列成缆系数中心空隙面积×d2（mm2）外层空隙面积×d2（mm2）芯数线芯排列成缆系数中心空隙面积×d2（mm2）外层空隙面积×d2（mm2）22201.571201+6+135.15401.944332.1540.041.248211+7+135.302.257442.4140.2151.220221+8+135.704.442552.70.5431.259232+8+13603.5986631.0251.329242+8+14602.97571+6301.329253+8+146.1540.043.28581+73.301.390263+9+146.1540.043.28591+83.701.679273+9+156.1540.042.801102+8402.276284+9+156.4140.2153.282113+84.1540.042.593294+9+166.4140.2152.806124+84.1540.042.039304+10+166.4140.2152.806134+94.4140.2152.553315+10+166.70.5433.319144+104.4140.2152.025325+11+166.70.5433.319155+104.70.5432.578335+11+176.70.5432.864165+114.70.5432.071346+11+1771.0253.398176+1151.0252.641356+12+1771.0253.398186+1251.0252.137366+12+1871.0252.927191+6+12502.137371+6+12+18702.927成缆外径系数、成缆中心间隙面积与外层空隙面积（圆形线芯成缆填充面积）、绞线的嵌隙面积（挤压式要考虑）

上表数据计算结果如下:2芯:填充面积S=1.58d23芯:填充面积S=1.30d24芯:填充面积S=1.46d25芯:填充面积S=1.79d23+1填充：S=3.14×［4.7076d12+35.1384d1d2-10.1436d22］÷644+1填充：S=3.14×［16.64d12+58.32d1d2-17.71d22］÷1003+2填充：S=3.14×［87.48d1d2-9.39d12-20.84d22］÷100

3+1结构成缆填充面积的推导：1.导体全为圆形结构（紧压或非紧压圆形），主绝缘线芯外径d1、中性绝缘线芯外径d22.成缆外径D=2.42(3d1+d2)÷4则半径=2.42(3d1+d2)÷83.填充面积S=成缆外径之圆的面积－3个主芯截面积－1个辅芯截面积4.S=3.14［2.42×（3d1+d2）/8］2－3×3.14（d1/2）2-1×3.14(d2/2)2=3.14［5.8564(9d12+6d1d2+d22)/64－3/4×d12-1/4d22］=3.14［5.8564(9d12+6d1d2+d22)/64－48/64×d12-16/64d22］(分母统一调整为64)=3.14［4.7076d12+35.1384d1d2-10.1436d22］÷643+13+24+1同样道理，可推导出3+2、4+1结构成缆填充面积：3+1结构的填充总面积：S=3.14×［4.7076d12+35.1384d1d2-10.1436d22］÷644+1结构的填充总面积：S=3.14×［16.64d12+58.32d1d2-17.71d22］÷1003+2结构的填充总面积：S=3.14×［87.48d1d2-9.39d12-20.84d22］÷100

YJV、YJV22系列填充理论用量计算值kg/km（用下面公式计算的理论值,导体采用现行紧压圆形结构）电缆规格导体直径绞入系数（放大）材料密度2芯3芯4芯5芯3+1芯3+2芯4+1芯2.51.761.020.69.667.948.9210.948.319.8410.3942.231.020.612.7410.4811.7714.4410.9312.9113.6762.751.020.616.6513.7015.3918.8714.3216.9417.91103.991.010.627.8222.8925.7031.5122.2525.2128.22165