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川内输气干线的工艺计算一直沿用威莫斯公式。实践证明,威莫斯公式的计算值与实测值相差较大,误差在30～40％范围内,有时超过50％。为此,作者选择川内输气干线永兴—德阳新、曹家坝—越溪、留宾—邓关三条输气干线的基本参数及实测数据,通过作图求解,导出了水力光滑区、混合摩擦区水力摩阻系数的经验公式,对用于阻力平方区的威莫斯公式进行修正。上述经验公式、修正式及威莫斯公式分别用三条线的实测数据代入,结果表明经验公式的计算值与实测值比较吻合,而威莫斯公式的计算值相差较大,说明经验公式反映了川内输气干线的实况。
The calculation of the gas pipeline in Chuanne has been using the Weimmes formula. Practice has proved that the calculated value of the Weimuosi formula with the measured values differ greatly, the error in the range of 30 to 40%, and sometimes more than 50%. Therefore, the author chooses the basic parameters and measured data of the three main gas transmission lines of the Chuan’e gas transmission trunk lines, namely, Yongxing-Deyangxin, Caojiaba-Yuexiu, Liubin-Denguan gas lines, and derives the hydraulic smooth zone, mixing Friction zone hydraulic friction coefficient empirical formula, for resistance square area of the Vims formula to be amended. The empirical formula, the modified formula and the Weimasi formula were respectively substituted with the measured data of the three lines. The results show that the calculated value of the empirical formula is in good agreement with the measured value, while the calculated values of the Vimos formula differ greatly, indicating that the empirical formula reflects Sichuan internal gas transmission line live.