高压加热器泄漏原因分析及对策

The reason of leakage of high pressure heater and countermeasures

四川华电攀枝花三维发电有限责任公司2×150 MW汽轮机组2005年投入商业运行以来,#2高压加热器在运行中频繁泄漏,截至2007年8月,#11、#12机组堵管率分别达8%和9%,严重影响机组的安全性和经济性。根据#2高压加热器制造、安装、调试、实际运行情况,对#2高压加热器泄漏的原因进行了分析,提出了相应的解决措施。通过有效的治理,使#11、#12机组高压加热器的投入率由先前的79.62%和81.98%提高到现在的99.32%和98.43%,提高了机组运行的安全性和经济性。

The two 150MW steam turbine units of Sichuan Huadian Panzhihua Sanwei Power Generation Corporation Limited were put in operation at 2005.Since then,the leakage fault of high pressure heater No.2 often occurred in operation.Up to the August 2007,the blind tube rate of No.11 and No.12 units reached 8% and 9% respectively,and this influenced on the safety and economical efficiency of the units badly.According to the fabrication,erection,debugging and actual operation of No.2 high pressure heater,the reason of leakage of No.2 high pressure heater was analyzed,and relevant solving measures were proposed.After effective rectification,the operation rate of No.11 and No.12 high pressure heaters were raised from previous 79.62% and 81.98% to present 99.32% and 98.43%,the safety and economical efficiency of the unit operation were raised.