135MW等级汽轮机不同高背压供热改造技术分析

doi:10.3969/J.ISSN.2095-3429.2017.05.011

发电技术 ›› 2017, Vol. 38 ›› Issue (5): 45-50.DOI: 10.3969/J.ISSN.2095-3429.2017.05.011

135MW等级汽轮机不同高背压供热改造技术分析

刘光耀¹, 王学栋¹, 宋昂², 刘传玲²

1. 华电电力科学研究院, 浙江杭州 310030;
2. 华电电力科学研究院山东分院, 山东济南 250014

收稿日期:2017-08-07 出版日期:2017-10-30 发布日期:2017-10-30
作者简介:刘光耀(1983-),男,江西上饶人,工学硕士,工程师,主要从事发电厂经济运行及节能降耗技术研究工作

Analysis of Different Reconstruction Technology for Heating Supply with High Back Pressure of 135MW Grade Steam Turbine

LIU Guangyao¹, WANG Xuedong¹, SONG Ang², LIU Chuanling²

1. Huadian Electric Power Research Institute, Hangzhou 310030, China;
2. Shandong Branch of Huadian Electric Power Research Institute, Jinan 250014, China

Received:2017-08-07 Published:2017-10-30 Online:2017-10-30

摘要/Abstract

摘要： 山东区域电网有9台135MW等级的纯凝、抽凝机组进行了高背压供热技术改造,目前出现4种改造方案,列举了4种改造方案的技术特征与改造内容。由改造后的汽轮机热力性能试验,得到机组高背压供热运行的经济指标,并对主要性能指标进行了分析。对低压缸通流部分进行重新优化的机组,改造后的低压缸效率最高。由于受热负荷、循环水流量以及改造方案影响,有4台机组在供热期内不能停止采暖抽汽运行,导致机组带电负荷能力下降,机组供热期试验热耗率上升。

关键词: 135MW等级, 凝汽式汽轮机, 循环水供热, 高背压改造, 低压缸通流改造

Abstract: There are nine 135MW grade pure condens-ing units and extraction-condensing units with high back pressure heating in the Shandong regional power grid.There are four types of retrofit schemes.In this paper, the characteristics and modification of four kinds of retrofit schemes listed.Through thermal performance test, the eco-nomic indexes after reformed are obtained and analyzed.For the unit reconstructed its LP cylinder current,its modi-fied LP cylinder efficiency is the highest.Because of influ-ence of heat load,circulating water flow and retrofit schemes,four units can not operate without extraction flow during heating period, resulting in lower power capability and higher heat consumption rate.

Key words: 135MW grade, condensing steam tur? bine, circulating water heating, high backpressure retrofit, flow passage reform of LP cylinder

中图分类号:

TM621

刘光耀, 王学栋, 宋昂, 刘传玲. 135MW等级汽轮机不同高背压供热改造技术分析[J]. 发电技术, 2017, 38(5): 45-50.

LIU Guangyao, WANG Xuedong, SONG Ang, LIU Chuanling. Analysis of Different Reconstruction Technology for Heating Supply with High Back Pressure of 135MW Grade Steam Turbine[J]. Power Generation Technology, 2017, 38(5): 45-50.

135MW等级汽轮机不同高背压供热改造技术分析

Analysis of Different Reconstruction Technology for Heating Supply with High Back Pressure of 135MW Grade Steam Turbine

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