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2018-09-01View Original

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Reply #22018-09-01
"Avant la démarrage de la pompe haute press,,压,启动前能稍微打开出口阀吗?",
Reply #32018-09-01
"Ami Haiyou,,,您好,强大的海友,请问高压泵启动前能稍微打开出口阀吗?压力从4公斤提至6公斤。如果可以稍微打开,作用是什么?这对设备、管路、阀门有什么利弊么?",
Reply #42018-09-01
"Oui,,可以啊,多级泵、高速泵一般都是出口微开启动。",
Reply #52018-09-01
"Je recommande de de légèrement ouvrir. Si les valves de sortie sont très serrées, lors du démarr de de la pompe, le fluide n ne peut pas sort sortir rapidement, cela peut avoir un impact sur le fonctionnement de de de de de la pompe。",
Reply #62018-09-01
"PPourrie 说利利,比如对管线、泵体、阀门的利弊影响?",
Reply #72018-09-01
"Bonjour,您可以再再详细点一点。",
Reply #82018-09-03
"Pour lespe à haute pression,启动前必须打开开最小流量阀;高速离心泵需要稍微打开。此外,在输送易挥发性物料时也需要稍微打开出口,防止泵启动时时时产生高温气化。泵在小流量运行时振动大,阀门在高压情况下开启困难,如果时间稍长,功率全部转化为热量,如果热量不能及时带走,介质可能因为温升汽化。",
Reply #92018-09-03
"Dans ce fil a été é 2158-9-1 11: 编辑 你这种高压泵在关闭出口阀运行时,泵内流动的液体会越来越热,尤其是输送饱和液体(如114℃锅炉水)及其他易气化介质,流量过小会造成流体温度上升造成气蚀。万一泵启动后去打开出口阀门,阀门太紧打开困难的话,泵不是容易损坏吗?",

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