石油化工设备技术 ›› 2022, Vol. 43 ›› Issue (3): 22-28,36.doi: 10.3969/j.issn.1006-8805.2022.03.005

• 检维修技术 • 上一篇    下一篇

润滑油品质对汽轮机调速系统的影响及对策

张锡德,董泰斌,米吉龙,陈小龙,王开发   

  1. 中国石油天然气股份有限公司塔里木石化分公司,新疆 库尔勒 841000
  • 收稿日期:2021-08-18 修回日期:2022-02-16 接受日期:2022-04-29 出版日期:2022-06-22 发布日期:2022-06-22
  • 作者简介:张锡德,男,1995年毕业于中国石油大学化工机械和设备专业,长期从事大型往复压缩机、离心式压缩机、蒸汽轮机等设备的运行、维护及管理工作,曾获得各级科技成果奖60余项,有发明专利1项,现任中石油塔里木石化分公司设备技术专家,中国设备管理协会中国设备工程专家库高级专家,中国化工学会化肥专业委员会第九、第十届专家委员,苏州华碧司法鉴定所高级专家,高级工程师,已发表论文90余篇。

Influence of Lubricating Oil Quality on Steam Turbine Governing System and Countermeasures

Zhang Xide, Dong Taibin, Mi Jilong, Chen Xiaolong, Wang Kaifa   

  1. PetroChina Tarim Petrochemical Company, Korla, Xinjiang, 841000
  • Received:2021-08-18 Revised:2022-02-16 Accepted:2022-04-29 Online:2022-06-22 Published:2022-06-22

摘要: 润滑油机杂、油泥及漆膜会导致汽轮机调速系统工作异常,引起汽轮机转速大幅度波动;电液转换器对油适应性差,自身稳定性不好,同样会造成调速系统故障频发。文章分析了润滑油机杂等因素对电液转换器、错油门及油动机造成的具体危害,并列举了汽轮机转速频繁波动案例。根据分析结果,确认TM-25LP 型电液转换器引起汽轮机转速波动的主要原因为润滑油品质劣化及漆膜产生。为及时发现该问题,增加润滑油化验指标,同时在控制油管路上增设双联过滤器,防止机杂、油泥对电液转换器产生影响。针对TM-25LP型电液转换器存在的问题,对电液转换器进行了升级改造。此外,为提高润滑油品质,还提出了相应的针对性措施。

关键词: 汽轮机, 润滑油, 品质, 转速波动, 电液转换器, 工作异常, 对策

Abstract: Themechanical impurity of lubricating oil, oil mud and varnishmay lead to abnormal working of the turbine speed control system and cause large fluctuations in turbine speed.The electro-hydraulic converter has poor adaptability to oil and its own stability is not good, which may cause frequent faults of speed regulation system as well. This paper analyzes the specific hazards caused by such factors as mechanical impurity of lubricating oil to the electro-hydraulic converter, the pilot valve and the oil relay. It also lists the frequent fluctuation cases of steam turbine speed. Based on the analysis results, it is confirmed that main reasons for the fluctuation of steam turbine speed of the TM-25LP electrohydraulic converter was the deterioration of lubricating oil and the generation of varnish.In order to detect this problem in time, the laboratory index of lubricating oil was increased. Meanwhile, the dual filter was added to the control oil pipe to prevent the influence of mechanical impurity and oil mud on electro-hydraulic converter.Aiming at the problems of the TM-25LP electro-hydraulic converter, upgrading and transformation of the electro-hydraulic converter was carried out. In addition, corresponding targeted measures were proposed to improve the quality of the lubricating oil.

Key words: steam turbine, lubricating oil, quality, rotation speed fluctuation, electro-hydraulic converter, abnormal work, countermeasures