1000MW汽轮机TSI调整轴系定位法优化分析

Analysis on the TSI positioning optimization of 1 000 MW steam turbine

通过对邹县电厂1000MW大容量汽轮发电机组TSI系统调整前汽轮发电机组轴系定位过程出现的问题进行分析,提出有别于传统的优化方案,即根据调整TSI轴系转子的轴向位置与单个高压转子推力盘靠在工作面上的位置进行比较,并以此修正TSI轴向探头的调整值为热工调整轴系提供一个准确的转子轴向位置。该方案目的在于保证TSI系统测量探头的要求间隙值,确保TSI系统轴向位移、胀差所设定的报警值、跳机值的准确性。依此方案进行轴系TSI调整取得满意的效果。

In view of the problems in shaft system positioning of 1 000 MW steam turbounit before the regulation of TSI system, an optimization solution was proposed. The axial position of TSI shafting rotor was adjusted and compared with that of thrust bearing of HP rotor, so as to modify the adjusting value of TSI shafting probe and provide an accurate axial position of rotor for shaft system adjustment. This solution aims to guarantee the required clearance value of TSI measurement probes and the accuracy of axial displacement, differential expansion alarm value and trip value. The result shows that this solution has made favorable effect in TSI adjustment of shaft system.