Abstract:During the load increase with constant speed of heavy gas turbine cold start stage, there is often relative slip caused by inconsistency radial deformation between the discs, the rod-fastened rotor will experience thermal transient vibration, which significantly changes with the increase of gas turbine rotor temperature. The mechanical model of relative slip between discs of the circumferential rod-fastened rotor with plane friction and spigot is established, which includes the mechanical model for plane friction, circumferential rod and spigot. The thermal transient vibration a certain type of heavy-duty gas turbine rod-fastened rotor that occurred during its cold start process was analyzed. Based on the relative slip law of the wheel discs, the thermal transient vibration of the heavy-duty gas turbine rod-fastened during cold start was successfully optimized by reducing the inconsistency radial deformation between the discs and appropriately increasing the spigot interference.
高进,黄涛,龚军军,赵仕志,艾松. 重型燃气轮机拉杆组合转子热瞬变振动特性研究[J]. 振动与冲击, 2024, 43(10): 285-291.
GAO Jin, HUANG Tao, GONG Junjun, ZHAO Shizhi, AI Song . Thermal transient vibration characteristics of a heavy duty gas turbine rod-fastened rotor. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(10): 285-291.
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