汽缸垂弧对汽封间隙调整的影响及对策

华电技术 ›› 2016, Vol. 38 ›› Issue (3): 26-28.

汽缸垂弧对汽封间隙调整的影响及对策

江苏华电扬州发电有限公司，江苏扬州〓225002

出版日期:2016-03-25 发布日期:2016-05-18

Influence of cylinder sagging to the adjustment of steam seal clearances and its countermeasures

Jiangsu Huadian Yangzhou Power Generation Company Limited,Yangzhou 225002,China

Online:2016-03-25 Published:2016-05-18

摘要/Abstract

摘要：

摘要：为解决江苏华电扬州发电有限公司汽轮机热耗偏高的问题，对汽轮机高中压缸本体各部套汽封间隙进行重新调整。分析了汽缸垂弧形成的原因以及汽缸垂弧对汽封间隙调整的影响，重新测量垂弧值后，根据垂弧测量值确定了高中压缸汽封间隙调整值，提出了在半缸状态下对上半汽封间隙进行调整验收的方法。调整后，机组热耗降至7899kJ/(kW·h)。

关键词: 关键词：汽轮机, 汽封, 间隙, 调整, 全实缸, 半实缸, 洼窝中心, 垂弧

Abstract:

Abstract:In order to solve the high thermal loss problem of steam turbine for Jiangsu Huadian Yangzhou Power Generation Company Limited, the steam seal clearances of high and middle pressure cylinder body parts are readjusted.This paper analyzed the forming reasons of cylinder sagging and its influence to the adjustment of steam seal clearances.After remeasuring the values of sagging,the adjustment values of steam seal clearances of high/medium pressure cylinder are confirmed. At last,this paper proposed an adjustment method for the upper part of the steam seal clearance under the half casing condition.After the adjustment,the thermal loss of unit reduced to 7899kJ/(kW·h).

Key words: Keywords:steam turbine, steam seal, clearance, fully installed cylinder, semi installed cylinder, bore center, sagging

施正生，童熙，欧锁实，季建宇，印广. 汽缸垂弧对汽封间隙调整的影响及对策[J]. 华电技术, 2016, 38(3): 26-28.

SHI Zhengsheng,TONG Xi,OU Suoshi,JI Jianyu,YIN Guang. Influence of cylinder sagging to the adjustment of steam seal clearances and its countermeasures[J]. Huadian Technology, 2016, 38(3): 26-28.

[1]	吉斌, 孙绘, 昌力, 张丹丹. 黏性电力用户参与需求侧响应的行为决策建模与分析[J]. 综合智慧能源, 2022, 44(2): 80-88.
[2]	王云鹏，段小云. 330MW热电联产机组锅炉低氮燃烧器改造和燃烧调整[J]. 华电技术, 2020, 42(6): 35-42.
[3]	丁阳，郝建刚，谢大幸. 9E型燃气轮机DLN1.0燃烧系统数值分析[J]. 华电技术, 2020, 42(5): 31-36.
[4]	徐静静，康慧，张瑞寒. 清洁燃煤供热与能源的综合利用[J]. 华电技术, 2019, 41(11): 36-39.
[5]	任新生. 火电企业供热生产集中化、智能化的改造实践[J]. 华电技术, 2019, 41(11): 70-75.
[6]	刘冠军. 东汽X300P型汽轮机轴向间隙计算及胀差大原因分析[J]. 华电技术, 2019, 41(1): 40-44.
[7]	虞涌. 600MW汽轮机全实缸汽封间隙调整工艺[J]. 华电技术, 2018, 40(9): 44-46.
[8]	韩荣利，冯仁海. 660MW超超临界机组再热汽温620℃运行技术探索与实践[J]. 华电技术, 2018, 40(7): 18-21.
[9]	陈建飞. 660MW单系列机组一次风机电机轴瓦温度高的原因分析及处理[J]. 华电技术, 2018, 40(6): 58-59.
[10]	任亮. 直接空冷机组冬季运行的防冻要点[J]. 华电技术, 2018, 40(5): 53-55.
[11]	刘恩生1，周新刚2. 双级动叶可调轴流引风机卡涩原因分析与改进[J]. 华电技术, 2018, 40(2): 50-51.
[12]	徐婷婷，丁阳，张梦可，刘志敏. 燃气轮机燃烧调整国内外研究技术综述[J]. 华电技术, 2018, 40(12): 8-12.
[13]	李茂1，游必超1，后颖黎1，王林2. 35t/h启动锅炉超温分析与技术改造[J]. 华电技术, 2018, 40(12): 13-15.
[14]	崔修强. 低氮燃烧器改造对锅炉运行影响探析[J]. 华电技术, 2018, 40(11): 59-61.
[15]	王才文. 某M701DA型燃气-蒸汽联合循环机组IGV开度优化调整[J]. 华电技术, 2017, 39(8): 44-47.