论文部分内容阅读
为了解决某涡轮支承环连接结构故障,本研究在详细描述故障现象的基础上,从结构角度分析了故障的危害性,并对故障解决流程进行了规划。通过开展对故障螺钉的金相检查和断口分析、连接位置的结构合理性分析、多工况温度场及强度校核计算,以及基于上述内容开展的故障复现试验等工作,验证了分析结论,查明了故障原因并提出了螺钉装配时停止使用丝和脂,并用镀银螺钉替代的方案。改进方案通过燃气轮机的整机试车考核证明了方案的合理性。该故障的解决也改善了某型燃气轮机涡轮支承环结构设计,同时提高了机组的可靠性。
In order to solve the fault of a turbine support ring connection structure, based on the detailed description of the fault phenomenon, the research analyzed the hazard of the fault from the structural point of view, and planned the fault solving process. Through the metallographic examination and fracture analysis of the failure screw, the structural rationality analysis of the connection location, the temperature field and strength check of the multi-working condition and the fault recurrence test based on the above contents, the conclusions of the analysis are validated. Identified the cause of the malfunction and put forward the screw assembly to stop using silk and grease, and silver plated screws instead of the program. Improvement programs through the gas turbine test machine test proved the rationality of the program. The solution to this failure also improves the structural design of the turbine support ring for a gas turbine while increasing the reliability of the unit.