350MW机组锅炉吹管过热器汽温偏差分析
Cause analysis 350 MW boiler superheated tube blowing process temperature deviation
翁智轩 1翁金钰 2王跃广2
作者信息
- 1. 福建鸿山热电有限责任公司,福建 石狮 362700
- 2. 华电西港发电有限公司,柬埔寨 西哈努克港 18000
- 折叠
摘要
350 MW汽轮机组锅炉在吹管期间,出现低温过热器管、屏式过热器管左右侧汽温偏差大的问题.为防止因汽温偏差导致超温,系统地分析偏差原因,发现是由于汽水分离器结构的特点,储水罐产生的不饱和蒸汽分配不均,导致主汽出口左右侧管道汽温产生偏差.运行中采取降低储水罐水位,增加疏水时间,从而减少产生不饱和蒸汽量,就可消除左右侧汽温偏差.
Abstract
During the blowing period of the 350 MW steam turbine boiler,there was a problem of large steam temperature deviation on the left and right sides of the low-temperature superheater tubes and platen superheater tubes.To prevent the overheating caused by this steam temperature deviation,a systematic deviation analysis was performed,which found that the uneven distribution of unsaturated steam generated by the water storage tank was caused by the structural characteristics of the steam water separator,resulting in deviation in the steam temperature of the left and right pipes at the main steam outlet.By lowering the water level of the water storage tank and increasing the drainage time during operation,the amount of unsaturated steam generated can be reduced,thereby eliminating the deviation in steam temperature on the left and right sides.
关键词
电站锅炉/吹管/汽温偏差/过热器Key words
power plant boiler/blowing pipe/vapor temperature deviation/superheater引用本文复制引用
出版年
2024
NETL
NSTL
万方数据