蒸汽管道在布置时有哪些规定

2025-03-14 22:40:34
推荐回答(1个)
回答1:

蒸汽管道在布置时有哪些规定?
蒸汽管道布置的一般要求是什么?
答:一般装置的蒸汽管道宜架空敷设,不宜管沟敷设,更不应埋地敷设。由工厂系统进入装置的主蒸汽管道,宜布置在管廊的上层。蒸汽管道应按下列要求布置:
1、 蒸汽支管应自蒸汽主管的顶部接出,支管上的切断阀应安装在靠近主管的水平管段上,以避免存液;
2、 蒸汽主管的末端应设分液包;
3、 水平敷设的蒸汽主管上分液包的间隔为:
1)、在装置内,饱和蒸汽宜为80M,过热蒸汽宜为160M,设在蒸汽低点位置及末端;
2)在装置外,顺坡时宜为300M,逆坡时宜为200M。
4、不得从用汽要求很严格的蒸汽管道上接出支管作其他用途;
5、蒸汽支管的低点,应根据不同情况设排液阀或(和)疏水阀;
6、在蒸汽管道的“∏”型补偿器上,不得引出支管。在靠近“∏”型补偿器两侧的直管上引出支管时,支管不应妨碍主管的变形或位移。因主管热胀而产生的支管引出点的位移,不应使支管承受过大的应力;
7、凡饱和蒸汽主管进入装置,在装置侧的边界附近应设蒸汽分水器,在蒸汽分水器下部设经常疏水措施。过热蒸汽主管进入装置,一般可不设蒸汽分水器;
8、多根蒸汽伴热管应成组布置并设分配管,分配管的蒸汽宜就近从主管接出;
9、直接排至大气的蒸汽放空管,出口不应低于2M,应在该管下端的弯头附近开一个Φ6MM的排液孔,并接DN15的管子引至排水沟、漏斗等合适的地方。如果放空管上装有消音器,则消音器底部应设DN15的排液管并与放空管相接。放空管应设导向和承重支架;
10、连接排放或经常排放的泛汽管道,应引至非主要操作区和操作人员不多的地方。

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