直接空冷机组夏季背压降低方法研究  

The Study of Reducing Backpressure of Direct Air-cooled Unit in Summer

作　　者：赵斌[1] 赵利杰[1] 靳姗姗[2] 刘庆伏[3] 李佩[1] 

机构地区：[1]河北联合大学冶金与能源学院 [2]河北省电力勘测设计研究院 [3]华能国际电力股份有限公司上安电厂

出　　处：《电站系统工程》2014年第4期53-55,共3页Power System Engineering

基　　金：河北省教育厅项目(2009125)

摘　　要：直接空冷机组运行受环境参数影响较大,夏季高温环境使机组运行背压高经济性差。以华能上安电厂2×620 MW直接空冷机组为例,分析了影响夏季机组背压的主要因素,研究了降低背压的3种方法。结果表明:采用空冷凝汽器清洗、喷雾增湿与轴流风机超频运行3种方法,分别使机组背压降低了6.5 kPa、5 kPa和4.1 kPa,可确保直接空冷机组在夏季高温环境下经济运行。Direct air-cooled unit influenced by environmental parameters, the high temperatures lead to the unit has higher backpressure and lower operating economically in summer. This paper studied the backpressure problem contrary to the Huaneng Shang An Power Plant with 2 ~ 620MW direct air cooling units, analyzed the main factors that influenced the unit backpressure in summer, summed up three methods to lower the unit backpressure. The result show that, use air-cooled condenser cleaning, spray humid and axial fan operating over clocking could make unit backpressure reduced 6.5kPa, 5kPa and 4.1kPa, could ensure direct air-cooled unit operating economically in the summer high temperature environment.

关 键 词：直接空冷机组 背压 清洗 喷雾增湿 风机超频运行 

分 类 号：TK249[动力工程及工程热物理—动力机械及工程]