空气预冷系统高压水泵变频改造分析与应用  

Analysis and application of air frequency-conversion reform of high-pressure water pump of pre-cooling system

作　　者：曹景华[1] 

机构地区：[1]安阳钢铁股份有限公司制氧厂一车间,河南省安阳市殷都区455004

出　　处：《深冷技术》2012年第1期64-67,共4页

摘　　要：23500 m3/h空分设备空气预冷系统的4台高压水泵为全负荷定速运行泵,其水流量超过了空气预冷系统的实际需求量,因此运行中出现了高压水泵出口节流现象,造成电能浪费。为了节能降耗,对4台高压水泵进行了变频改造。分析了高压水泵变频改造的必要性和改造后的运行优势,阐述变频改造后存在的各种问题及解决措施,最后分析了改造的经济效益。Four high-pressure water pumps of air pre-cooling system of 23500 m3/h air separation plant are the fullload constant rate pumps, their water flow rate exceeds the actual demand of the air pre-eooling system and thus throttling occurs at outlet of the pump, which wastes electric energy. In order to lower energy consumption, the fours sets of high-pressure water pump are subjected to frequency-conversion reform. Here, the necessity for the said reform and the operation advantages after the reform are briefed, the problems after the said reform and the corrective measures are described, and finally the economic benefits realized by the reform are analyzed.

关 键 词：空分设备 空气预冷系统 常温水泵 低温水泵 变频改造 

分 类 号：TB657.9[一般工业技术—制冷工程]