Analysis on leakage reasons of high pressure heater in 600MW supercritical turbine

Abstract

Abstract: After the 600MW supercritical unit was put into commercial operation, the leakage was occurred in high pressure heater pipeline. Various factors, which may causing leakage of high pressure heater, were analyzed, and it was pointed out that the main reasons are the high temperature corrosion and the thermal shock of the pipelines. Aiming at the problems existed in supervision and maintenance in operation and the startup and shutdown of the high pressure heater, the solving scheme and preventive measures were put forward. The leakage of the high pressure heater was prevented effectively, and safe, stable and economical operation of the high pressure heater was ensured.

Key words: supercritical steam turbine, high pressure heater, pipelines leakage, reason analysis, treatment

MA Shidong;YUAN Hongtao. Analysis on leakage reasons of high pressure heater in 600MW supercritical turbine[J]. Huadian Technology, 2010, 32(9): 65-67.

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Analysis on leakage reasons of high pressure heater in 600MW supercritical turbine

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