LNG加气站增大潜液泵气蚀余量的工艺措施  

LNG filling stations increased technological measures submerged pump cavitation margin

作　　者：马微微 

机构地区：[1]陕西省燃气设计院,陕西西安710043

出　　处：《化工中间体》2015年第4期122-123,共2页

摘　　要：本文主要是建立了LNG加气站气蚀余量模型,以此来对潜液泵气蚀余量不足的原因进行了研究分析。在泵池内部的LNG温度会上升较快,其蒸汽的压力也会随指增加,这样会导致LNG储罐中的温度被破坏,其压力逐渐下降。导致潜液泵气蚀余量下降的主要原因就是LNG储罐压力下降以及LNG饱和的蒸汽压力增大。针对这些现象,本文主要提出了相关的措施对其进行解决。This paper is the establishment of LNG filling stations NPSH model, in order to dive for reasons of insufficient NPSH pumps were studied and analyzed. LNG temperature inside the pump tank will rise faster, which means with the pressure of the steam will increase, this will cause the temperature of the LNG storage tank is destroyed, the pressure gradually decreases. Submersible pump cavitation leading to the main reason for decline in margin pressure drop and LNG LNG storage tank saturated vapor pressure. In response to these phenomena, this paper puts forward relevant measures to solve them.

关 键 词：LNG储罐 潜液泵 气蚀余量 工艺措施 

分 类 号：U473.8[机械工程—车辆工程]