汽轮机汽缸猫爪负荷分配偏差危害及交叉影响计算分析
Calculation and Analysis of Cat Claw Load Distribution Deviation Hazard and Cross Effect of Steam Turbine Cylinder

大型汽轮机汽缸猫爪负荷分配试验是一项重要的工艺，它贯穿汽轮机安装整个过程。对于服役的机组因运行中综合因素的叠加，也需要定期进行负荷分配的试验和调整。传统的方法调整计算忽略猫爪间交叉影响，过多依赖于个人经验。本文阐述猫爪负荷分配偏差过大的危害，为汽轮机提供一种故障模式，并提出一种新的猫爪负荷调整计算方法，大幅提高调整准确性的同时也为实现计算机程序运算提供了可能，对猫爪负荷分配试验工艺提升具有实际的借鉴和指导意义。
Large steam turbine cylinder cat claw load distribution test is an important process, which runs through the whole process of steam turbine installation. Due to the superposition of comprehensive factors in operation, it is also necessary to conduct regular load distribution tests and adjustments for the units in service. The traditional method of adjustment calculation ignores the cross effect between cat’s claws and relies too much on personal experience. This paper expounds the hazards of excessive deviation of cat’s claw load distribution, provides a failure mode for steam turbines, and proposes a new cat’s claw load adjustment calculation method, which greatly improves the adjustment accuracy and also provides the possibility for computer program operation. It has practical reference and guiding significance for the improvement of the cat’s claw load distribution test process.