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["1. Multipleur pompe centrifuge

2017-11-06View Original

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"1
Reply #22017-11-06
一台multipleur pompe centrifuge,, Q=995立,, H, H=1s
Reply #32017-11-06
针对这样的泵在选型中还有什么要特别注意的吗?
Reply #42017-11-06
① 楼主未贴出操作温度,不过我常见的高压胺液泵均为常温,冲洗方案 Plan11+53B 并无问题。 ② 多级离心泵安装 Plan11,并不会再最后一级引出压力,可从一级叶轮扩压器引出,不会对密封造成损坏。 ③ 冲洗介质对泵不产生影响。但是,选择53B密封时,应考虑冲洗介质是否会对工艺介质造成污染。按照 API 682 的泄漏量要求,一般为每分钟两滴的量,如果不是对工艺介质的品质要求十分苛刻,一般是可以接受的。 ④ 针对楼主所提参数,一般的 API BB5 径向剖分桶型多级离心泵即可满足要求,一般3000转的电机可以达到,无需通过之轮箱增速到5000转。 ⑤ 另外,考虑装置的有效汽蚀余量,是否能满足该泵必须汽蚀余量的要求。
Reply #52017-11-09
1——如果有高温,建议用Plan23+53,鉴于你打的胺水,BB3、BB4会有泄漏,故还是BB5安全,既然用BB5,那么泵结构限值,很难做到从1级去压。或者如楼上所说,采用孔板降压,但是从22MPa将到机封腔压力,孔板级数很长,且增加漏点,我个人不喜欢这么干。 2——选型方面,建议保留5000rpm,11级叶轮,效率大概在5-6十左右,汽蚀核算过了,这么干比较合理,没问题。

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