摘要
对AP1000核电厂脱气塔真空泵,在不同工况下的电流特性进行了试验研究。分析了泵的背压,泵抽取的气体流量,泵抽取气体的种类对泵的运行电流的影响。结果表明泵的背压越高泵的运行电流越大,并且存在一个峰值背压,使得泵的电流阶跃上升,造成泵过载。同时随着泵的流量的增加,运行电流缓慢上升;真空泵背压一定情况下,抽取不同种类气体的运行电流相同。
Here,we experimentally addressed thespecial operation environment of the vacuum pumps,dedicated to the degassing tower at AP1000 nuclear power plant. The influence of the working conditions,including the back pressure,type and flow-rate of the pumped gases,on the operating current of the vacuum pump was investigated. The results show that the current depended strongly on the back pressure,but weakly on the flow-rate. For example,as the back pressure increased,the current slowly increased to the rated-current（ below 98 kPa） and rapidly shot up（ above 210 kPa） to overload the pump,suggesting an upper limit of the back pressure around 100 kPa; the current slowly increased with an increasing flow-rate. The gas type was found to little affect the current. We suggest that the back pressure should be controlled below the upper limit in the pumping of the degassing tower.
出处
《真空科学与技术学报》
CSCD
北大核心
2017年第4期369-371,共3页
Chinese Journal of Vacuum Science and Technology
关键词
真空泵
背压
峰值背压
脱气塔
过载
Vacuum pump
Back pressure
Peak back pressure
Degasifier
Overload
