离心压缩机的喘振Second, the centrifugal compressor surge：（）

A、现象：压力、流量大幅度变化；吼叫；振动强烈。 Phenomenon: pressure and flow change greatly; Roar; The vibration is strong.

B、危害harm：强烈振动破坏密封部件及轴承、叶轮等运转部件。Strong vibration damages sealing parts and bearing, impeller and other running parts.

C、防止方法prevention method：保证Q1＞Qmin，工作点压力低于喘振点压力。Ensure Q1＞Qmin, working point pressure is lower than surge point pressure.

D、防止方法prevention method：当Q1＜qmin时，回流when reflux occurs：分流出口部分气体经降压冷却后，返回压缩机入口。after cooling down, some gas at the shunt outlet is returned to compressor＞

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更多“离心压缩机的喘振Second, the centrifuga…”相关的问题

第1题

离心压缩机的喘振Second, the centrifugal compressor surge原理Principle：（）

A、当Q1＝Qmin，旋转脱离并扩大，出口压力p2减小，<p’ when q1="Qmin," the rotation disengages and expands,exit pressure p2 decreases,> B、倒流Q1<0:下游管道 p2，reverse flow downstream pipe p 'decreases,> C、正流Q1>0:下游管道 p’增大，> p2，Positive flow Q1>0: downstream pipe p 'increases, > p2

D、Q1减小，<0，q1 goes down, is less than>

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第2题

离心压缩机centrifugal compressor 缺点shortcoming：由于喘振，难以同时满足小流量及高压力的要求，且效率低，近年来改进可达84%以上。Due to the surge, it is difficult to meet the requirements of low flow and high pressure at the same time, and the ef

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第3题

离心压缩机centrifugal compressor：（）

A、结构紧凑，尺寸小，重量轻Compact structure, small size and light weight；

B、排气均匀，连续，不需级间的缓冲容器，可以直接进行串联运行Uniform exhaust, continuous, no need for buffer containers between stages, can be directly in series operation；

C、无往复运动部件，振动小，易损件少，不需庞大而笨重的基础No reciprocating moving parts, small vibration, less wearing parts, do not need a large and heavy foundation；

D、除轴承外，机件内部不需要润滑，节省油料，且不会污染所输送的气体In addition to the bearing, the internal parts do not need lubrication, save oil, and will not pollute the transmission of gas；

E、转速高，可与蒸汽轮机或燃气轮机直接联动，便于调节流量，利于节能High speed, can be directly linked with the steam turbine or gas turbine, easy to adjust the flow rate, conducive to energy saving；

F、维修工作量小，调节方便。Small maintenance workload, easy to adjust.

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第4题

离心式压缩机Centrifugal compressor：（）

A、单级压比较低，1.1~1.5，可多级串联或多台串联Single - stage pressure is relatively low, 1.1~1.5, can be multi - stage series or multi - series

B、转速较高，4000r/min,可调High rotation speed, 4000r/min, adjustable

C、排量大Large displacement

D、出口压力不能太高。Export pressure should not be too high

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第5题

简述离心式压缩机产生喘振的原因？

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