摘要
针对浙江东部某火电厂两台锅炉引风机(汽轮机)在相同阀位指令下引风机风压相差较大,导致两台锅炉引风机不能并列运行(通过实际观察发现是汽轮机的油动机运行过程中上、下行程偏差大)的问题,对油动机的反馈板,错油门套筒及滑阀,油动机的密封圈及油动机的相关连接部件等方面进行了相关检查和分析,并对油动机的反馈板,油动机的密封圈及油动机的相关连接部件等方面提出了相关改进方案。针对这些方案采用了静态实验方法,对汽轮机的油动机运行过程中上、下行程值进行了多次测量与比对,并对所测量的数据进行了相应的分析。研究结果表明,引起汽轮机油动机运行过程中上、下行程偏差大的最主要原因是使用了不合格的密封圈,造成微量泄油;装载运行后,证实了解决方案的有效性。
Aiming at the large difference of outlet air pressure between two boiler draft fans of a power plant in the east of Zhejiang which are under the same valve setpoint,resulting in that the two boiler draft fans can not be parallel operation,through the practical observation,it was found that the deviation of the stroke was a big problem in the process of the servomotor of the steam turbine. After carrying out the related inspection and analysis of feedback board,pilot valve,slide-piston,sealing ring and connection piece of the servomotor,then related improvement plans were proposed. Aiming at these schemes. The static test method was used to measure and compare the stroke values of the steam turbine＇s servomotor,and to analyse the corresponding measured data. The results indicate that the main reason for the deviation of the stroke during the operation of the turbine is the use of the unqualified sealing ring which can cause the trace oil leakage. After the loading operation,the effectiveness of the solution is confirmed.
出处
《机电工程》
CAS
2016年第11期1376-1379,共4页
Journal of Mechanical & Electrical Engineering
关键词
油动机
密封圈
错油门
servomotor
sealing ring
pilot valve
