Abstract: YL33000A superpower flue gas turbine is currently the most powerful turbine in China. In the development, the technical difficulties are referred to: what the treatment capacity and elevation of oil refinery devices are, and that some flow fields are supersonic. Based on the design concept “controllable vortex”, new type ceramic-base wear-resistant coating was developed by calculating pneumatic flow field design, and the strength and stress distribution completed by relevant software. In order to carry out hot mechanical running tests, explosion spraying technology,honeycomb seals, hollow rod bolt and electrical spark machined moving blade body are applied. The adiabatic efficiency of the flue gas turbine is up to 79%, and the conversion power as per calibration status is 32. 8 MW, which can save electricity of 2. 365×108kW·h one year. The turbine is in smooth operation and fills the domestic blank for flue gas turbine on this level. It also narrows the gap with foreign similar products, and has certain reference significance to the research and development of turbine equipment in similar conditions.

Key words: superpower, flue gas turbine, controllable vortex, wear-resistant coating, honeycomb seals

摘要： YL33000A 型特大功率烟机为目前国产最大功率产品, 研制中针对炼油厂装置处理量、所处海拔及部分流 场为超音速等技术难点, 基于“可控涡” 设计理念, 通过相关软件完成的气动流场设计及强度应力分布等计算过程, 研制新型陶瓷基耐磨涂层, 应用爆炸喷涂技术, 采用蜂窝密封、空心拉杆螺栓、点火花加工动叶片叶身等新技术、新 工艺, 进行热态机械运转试验。烟机绝热效率达79%, 按标定状态折算功率达32. 8MW, 年节约电2. 365×108kW·h, 运行平稳, 填补了国内烟机这一级别空白, 缩小了与国外同类产品的差距, 对类似工况透平设备的研发具有一定借鉴 意义。

关键词: 特大功率, 烟气轮机, 可控涡, 耐磨涂层, 蜂窝密封