亚临界600 MW汽轮机通流改造技术方案研究与应用

doi:10.11930/j.issn.1004-9649.201612028

中国电力 ›› 2018, Vol. 51 ›› Issue (4): 89-95.DOI: 10.11930/j.issn.1004-9649.201612028

亚临界600 MW汽轮机通流改造技术方案研究与应用

张磊¹, 张俊杰¹, 冯立国², 乔加飞¹, 徐亚涛¹

1. 神华国华(北京)电力研究院有限公司, 北京 100025;
2. 神华浙江国华浙能发电有限公司, 浙江宁波 315612

收稿日期:2016-12-28 修回日期:2017-12-11 出版日期:2018-04-05 发布日期:2018-04-12
作者简介:张磊(1982-),男,河北唐山人,高级工程师,主要从事电厂热能工程和工程热物理方面的研究,E-mail:zhlei5122@163.com。
基金资助:
国华电力公司科技项目（国华600 MW亚临界汽轮机组节能综合升级研究）。

Research and Application of Flow Path Retrofit Upgrade of the Subcritical 600 MW Turbine in Ninghai Power Plant

ZHANG Lei¹, ZHANG Junjie¹, FENG Liguo², QIAO Jiafei¹, XU Yatao¹

1. Shenhua Guohua(Beijing) Electric Power Research Institute Co. Ltd., Beijing 100025, China;
2. Shenhua Zhejiang Guohua Zheneng Group Power Plant Co., Ltd., Ningbo 315612, China

Received:2016-12-28 Revised:2017-12-11 Online:2018-04-05 Published:2018-04-12
Supported by:
This work is supported by Guohua Electric Power Science Project (Research and Application of Flow Path Retrofit Solution of Subcritical 600 MW Turbine of Guohua Company).

摘要/Abstract

摘要： 介绍了宁电亚临界600MW汽轮机通流改造技术方案的研究与应用情况。首先，分析了宁电亚临界600MW机组改造前性能和存在的问题，确定了改造前汽轮机性能和出力状况。其次，调研了国内亚临界300MW汽轮机通流改造业绩，以及各通流改造厂商的性能保证值，并进行了热力校核计算，分析得出亚临界600MW汽轮机改造后可达到的性能指标。最后，针对制造厂提供的通流改造方案，提出了冷端优化、末级叶片选型等优化设计方案，从而确定了改造的最终方案。改造后性能试验表明，汽轮机热耗率降低了332 kJ/（kW·h），经济效益显著。

关键词: 600 MW, 汽轮机, 通流改造, 热耗率, 末级叶片

Abstract: In this paper, the research and application of flow path retrofit upgrade of the subcritical 600MW turbine in Ninghai Power Plant are introduced. Firstly, the performance and the existing problems of the subcritical 600 MW unit are analyzed, and the output status of the turbine before the upgrade is determined. Secondly, the achievements of the 300 MW steam turbine flow path retrofit upgrade projects in China and the guaranteed performance data from the manufacturers are studied; the thermal checking caluclation is conducted to get the expected performance index of the subcritical 600 MW steam turbine after the upgrade. Finally, the optimized design schemes, such as the cold end optimization and the final stage blade selection, are proposed after considering the upgrade schemes provided by the manufacturer to determinethe final scheme. With the flow path retrofit, the specific heat consumptionof the steam turbine is reduced by 332 kJ/(kW·h), and the economic benefit is remarkable.

Key words: 600 MW, steam turbine, flow path retrofit, heat rate, exhaust stage blade

中图分类号:

张磊, 张俊杰, 冯立国, 乔加飞, 徐亚涛. 亚临界600 MW汽轮机通流改造技术方案研究与应用[J]. 中国电力, 2018, 51(4): 89-95.

ZHANG Lei, ZHANG Junjie, FENG Liguo, QIAO Jiafei, XU Yatao. Research and Application of Flow Path Retrofit Upgrade of the Subcritical 600 MW Turbine in Ninghai Power Plant[J]. Electric Power, 2018, 51(4): 89-95.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201612028

https://www.electricpower.com.cn/CN/Y2018/V51/I4/89

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亚临界600 MW汽轮机通流改造技术方案研究与应用

Research and Application of Flow Path Retrofit Upgrade of the Subcritical 600 MW Turbine in Ninghai Power Plant

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亚临界600 MW汽轮机通流改造技术方案研究与应用

Research and Application of Flow Path Retrofit Upgrade of the Subcritical 600 MW Turbine in Ninghai Power Plant

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