对改用循环水供热汽轮机的安全性分析  

Safety Analysis on Turbines Heated by Circulating Water after Retrofit

作　　者：董学宁 李宏春 郭玉双[2] 

机构地区：[1]盛明热电有限责任公司,辽宁阜新123100 [2]沈阳工程学院,辽宁沈阳110036

出　　处：《东北电力技术》2005年第3期5-8,共4页Northeast Electric Power Technology

摘　　要：为了提高双抽汽供热汽轮机的热效率 ,改用循环水供热。机组运行方式变化后 ,就如何保证其安全性提出了许多问题 ,在热膨胀、力学、稳定运行等几个方面需要论证。通过理论计算及实践验证 ,调节抽汽式汽轮机改为循环水供热时 ,需重点关注的是机组振动及调节系统的稳定性。从安全角度出发 ,机组的振动值得注意 ;在稳定运行方面 ,只要循环水供热工况稳定 。To enhance the heat efficiency of dual extraction heating turbine,circulating water heating is adopted.After the changed in operation mode for the unit,many problems arise as to the safety of it.Many aspects such as heat extraction,mechanics and stable operation are needed to be determined.Theoreti calclaculation and practice show that importance should be attached to the stability of unit vibration and regulating system,when circulating water heating is being used to turbine instead of regulating extraction.From the point of safety,attention should be paid to the unit vibration;from the point of operation stability,so long as circulating water heating works well the regulating system would remain stable.

关 键 词：供热式汽轮机 循环水供热 安全性 

分 类 号：TK26[动力工程及工程热物理—动力机械及工程]