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2020-04-22View Original

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请教海友：我公司有一条常温油品管线，操作压力为10公斤；该油品管线在停工时需要用蒸汽吹扫（蒸汽3.5公斤，177摄氏度）. 请教该油品管道的设计压力和设计温度应该怎么取？需要考虑蒸汽吹扫的工况吗？

Reply #22020-04-22

SH/T 3059-2012 《石油化工管道设计器材选用规范》，"4.2.2.g) 需吹扫管道的设计温度应根据具体条件确定"。

Reply #32020-04-23

十分感谢. 请问有具体的实践案例吗？

Reply #42020-04-23

管道的设计应同时满足操作工况和吹扫工况的要求。在管道表除标注设计压力和设计温度，还应该用*标注吹扫介质的操作温度和操作压力。当管道系统进行试压时，此管道可按管道介质的设计压力、设计温度和吹扫介质的操作温度和操作压力分别计算试验压力，取二者中较大值为管道的试验压力，

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