汽轮机通流部分改造的节能效果分析

Analysis of energy saving effect of the turbine flow passage reconstruction

摘要

为应对能源成本压力与节能减排要求，对汽轮机通流部位实施节能改造成为提升老旧机组效能的关键。本文针对传统汽轮机因通流部位性能衰退导致的能量损耗问题，探讨了其节能改造的技术路径与实际应用效果。文章分析了通流部位叶片磨损、间隙泄漏等主要能耗成因，重点阐述了通过优化叶片型线与叶栅结构、升级密封技术、改进进排汽机构等核心技术进行改造的节能机理。实践表明，改造能有效提升机组能量转换效率，增强负荷适应能力，实现单位能耗显著降低，并改善运行稳定性，为企业节能降耗与转型升级提供了有效途径。

Abstract

To address energy cost pressures and meet energy conservation requirements, implementing energy-saving retrofits on turbine flow passages has become crucial for enhancing the efficiency of aging units. This paper investigates the technical approaches and practical outcomes of energy-saving retrofits for traditional steam turbines, which suffer from energy loss due to performance degradation in flow passages. The analysis identifies key energy consumption factors such as blade wear and clearance leakage, while detailing the energy-saving mechanisms achieved through core technologies including optimized blade profiles and grid structures, upgraded sealing systems, and improved steam intake/exhaust mechanisms. Field applications demonstrate that these retrofits effectively enhance energy conversion efficiency, improve load adaptability, achieve significant reductions in specific energy consumption, and enhance operational stability, providing an effective pathway for enterprises to reduce energy consumption and facilitate technological transformation.

关键词

汽轮机 / 通流部位 / 节能改造 / 能量损耗 / 运转效能

Key words

steam turbine / flow path / energy-saving retrofit / energy loss / operational efficiency

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