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["["泵回流问题

2020-06-09View Original

Thread Content

1["老同事说,对于离心泵,正常工作时一般是:小泵常回流,大泵不回流。对此,未查到相关规范和原因,请各位海友给予帮助和指导,谢谢!
Reply #22020-06-09
*这需要根据操作工况确定,总之来说,不管小泵还是大泵,都不能长期憋压。
Reply #32020-06-09
*那么您认为正常工作时,小泵不回流,大泵常回流合理吗?依据是什么?谢谢!
Reply #42020-06-09
*这话有一定的道理,通常小泵的最小回流通常采用节流孔板,是一直有流量的;而大泵的最小回流往往采用流量调节阀,泵正常运转时,调节阀是关闭的,所以没有流量。
Reply #52020-06-09
*https://bbs.hcbbs.com/thread-33557-i-1" "https://bbs.hcbbs.com/thread-i-764877-i--"
Reply #62020-06-09
*这与泵的最小连续运行流量、热控最小流量有关
Reply #72020-06-09
8*"谢谢大家的热情帮助,个人赞同4楼建议。谢谢!
Reply #82020-06-09
9泵本身功率小,常回流可以防止憋压同时又不增加多少能耗 太泵功率大,常回流说明设计不合理,常回流需要耗很多电
Reply #92020-06-10
*一般离心泵压力与流量有个适宜范围,而泵越小这个范围越小,而小泵一般都选型都偏大较多,无回流的话流量低的时候泵压力较高,而小泵耐压较差,结果你懂的。
Reply #102020-06-12
8*"一般离心泵≥30%额定流量,就不需要开回流。回流是避免憋泵造成介质高温气蚀。造成设备损坏"
Reply #112020-06-16
99*我就是喜欢你们这种回答,针对多数情况的经验分享,最讨厌那种杠精什么都要绝对的情况又要具体工况分析,又不是项目的泵设计选型。

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