【摘要】 针对染整导热油热力循环系统出现的管道阻力增大,而引起循环系统进出口油温温差过大的现象进行分析研究。以企业为例对导热油热力循环系统的压降、局部阻力和沿程阻力进行了理论计算和分析。结果表明:热油输送管道的总压力损失为1 980 k Pa,由于胶质物黏附在油管内壁,使摩擦阻力增大了278 k Pa,占运行阻力的14.05%,表明导热油热力循环系统的阻力增大主要是由油管道延长而引起的;当导热油进出口油温设计温差为25℃,导热油速度为2.38 m/s时,由于导热油运行产生的胶质物而引起的沿程阻力增加,可增加575 k Pa的阻力损失,所以建议对使用超过1年的导热油管道进行管道清洗。更多还原

【Abstract】 The increase of pipeline resistance of heat transfer oil heating system during dyeing and finishing process would lead to great temperature difference between import and export. Theoretical calculation and analysis about pressure drop,local resistance and frictional resistance of the heating system was carried out taking an enterprise as an example. The results show that the total pressure loss of hot oil pipeline is 1 980 k Pa. The frictional resistance increased 278 k Pa as the gel adhesive on the inner wall of the tubing,accounting for 14. 05%. Therefore,the resistance of oil pipeline is mainly caused by heat conduction oil heating cycle system. When the designed temperature difference between oil import and export is 25 ℃ and the oil speed is 2. 38 m / s,the heat conduction oil colloids can increase the resistance loss of 575 k Pa. It is suggested that the heat conduction oil pipe should be cleaned when it is in use more than one year.更多还原