汽轮机冷油器泄漏原因分析

粤泷发电有限责任公司自2004年2月投产到2006年6月期间汽轮机冷油器铜管发生了多次泄漏。为此,从铜管材质、冷却水水质、汽轮机油油质、停(备)用方式等方面进行了一系列的分析,找出了铜管腐蚀、泄漏的主要原因:(1)冷油器管材不适宜冷却水水质,(2)停(备)用方式不当。为此,将冷油器管材BFe10-1-1更换为不锈钢管,并改变停(备)用方式,使问题得以解决。

CAUSE ANALYSIS OF OIL- COOLER LEAKAGE FOR STEAM TURBINES

Frequent copper tube leakage had occurred in oil-cooler of steam turbines during operation period from Feburary,2004 to June,2006 at Yuelong Power Generation Co Ltd.For this,a series of analysis has been carried out from aspects,such as material quality of copper tubes,water quality of cooling water,oil quality of turbine oil,and shutdown(standby) mode etc.,finding out the main causes resulting in corrsion and leakage of the copper tubes to be as follows:(1) the quality of copper tube materials isn't suitable for the quality of cooling water;(2)the shutdown(standby) mode is improper.Thereby, the copper tubes BFe10-1-1 of oil-cooler have been replaced by using stainless steel tubes,and the shutdown(standby) mode being improved,making the said problem finally to be solved.