超临界600MW机组振动状态监测与故障诊断系统开发

发布时间：2018-07-04 22:55

本文选题：汽轮机故障 + 数字信号处理　；参考：《华北电力大学》2017年硕士论文

【摘要】：伴随着我国经济的迅猛发展,超临界600MW发电机组于2000年之后大批量投入生产运营,已成为我国火力发电企业的主力机组。火电厂汽轮机是电力企业主要设备设施,是能量转换的核心部件。我国600MW超临界机组在段时间内的大面积投产,汽轮机厂在吸收国外经验及加快设备制造过程较快,汽轮机投产运行过程中逐渐暴露出由于部分吸收改进的结构设计不合理、检修安装现场的部套安装质量低、设备监测分析装置可靠性不高、精度差和设备故障预警装置不及时等产生的各种异常。这些问题会直接导致机组停运及各类事故,给发电企业及电网带来经济损失。为此开展超临界600MW机组振动常见故障处理的收集及归纳。针对目前电厂广泛采用的在线监测装置的升级改造工作是能源行业汽轮机的研究方向。本文研究了600MW汽轮机机组振动常见故障如叶片断裂、转子裂纹、动静碰摩等相关故障,重点梳理超临界600MW汽轮机近年来的主要故障统计分布及特征,并开发了一套基于IEEE 802.11的旋转机械振动在线监测与故障诊断系统。
[Abstract]:With the rapid development of China's economy, supercritical 600MW generating units have been put into production and operation in large quantities since 2000, and have become the main units of thermal power generation enterprises in China. Steam turbine in thermal power plant is the main equipment of power enterprise and the core component of energy conversion. When 600 MW supercritical unit is put into production in a large area in a period of time in China, the steam turbine plant is absorbing foreign experience and speeding up the manufacturing process of the equipment. During the operation of the steam turbine, the unreasonable structural design due to partial absorption and improvement is gradually exposed. All kinds of anomalies such as low installation quality, low reliability of equipment monitoring and analysis device, poor precision and equipment fault warning device are caused by the low quality of part sleeve in the site of maintenance and installation. These problems will lead directly to the outage of generating units and all kinds of accidents, and bring economic losses to power generation enterprises and power grids. To this end, the collection and induction of common vibration faults of supercritical 600 MW units are carried out. It is the research direction of steam turbine in energy industry to upgrade and renovate the on-line monitoring device which is widely used in power plant at present. In this paper, the common vibration faults of 600MW steam turbine such as blade breakage, rotor cracks, dynamic and static rub-impact faults are studied, and the statistical distribution and characteristics of main faults of supercritical 600MW steam turbine in recent years are discussed. An on-line vibration monitoring and fault diagnosis system for rotating machinery based on IEEE 802.11 is developed.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM621

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