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["L'impact d翻译如下:

2018-08-12View Original

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["L'impact des tubes second branchements sur les résistances des管线阻力对出口管线旁路的影响
Reply #22018-08-12
["Chers amis maritimes, Un pompe centrifugeue a un débit de sortie de s方流量,当出口阀全开,出口调节阀全开时,出口压头为0.75 MPa,此时的流量与压应就是该泵在该管路系统阻力下的性能曲线。当我们把调节阀旁路全开后流量能上涨到35 m方,出口压力降到 t.6 MPa,我想请教各位海友,为什么打开出口调节阀旁路后会有这么大的大的流量变化呢?开旁路是否能降低出口管路的阻力,一小节旁路就能把整个管路特性改变这么大吗?
Reply #32018-08-12
La position de la valve de régulateur通常都会有变径,管径相比整个管路有节流,旁路流量增加就可以理解了。
Reply #42018-08-12
A de de副路开启时就是直管阻力的变化。一般我们在计算直管阻力时损失时是非常小的。为什么出口出口管线性能会增加这么多呢?

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