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["Blanc demande, lorsqu l'extracteur est fermé, faut-il ouvrir la vanaleation de retour?", "Pour l'extracteur de méthanol de mon usine,pression de à l'issue de sortie est de 3 MPa (pression mesurururée), faut-il ouvrir larst larst la

2020-01-14View Original

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我厂打甲醇的离心泵,出口压力在 1 Mpa(表压),停泵时要不要先开回流在关出口阀?(平时正常运行时回流基本上全关) 求老师傅指导下,并说明因
Reply #22020-01-14
1MP压力不算大,不需要开回流,直接关出口,然后停泵
Reply #32020-01-18
换个思路,如果管线没有回流管呢:lol
Reply #42020-01-19
我想知道的是回流为什么设计在这台泵上?所以按照正常的思路应该是 1,正常生产时关闭,那么非正常情况下应该打开的,比如开停工等过程中 2,至于要不要关闭还需要看这台泵的转速高低,如果是一台高速泵的话还是需要打开回流的。 3,如果是一台平常的泵,需要考虑介质的性质,如果是甲醇根据物性更容易气化,建议打开回流,这样操作对机泵有益。当然,介质性质如果可以还是可以不需要关闭回流的。
Reply #52020-01-26
没必要关闭 回流阀一般用来卸车用的

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