舰船燃气轮机燃烧室壁温试验研究

An Experimental Study on Marine Gas Turbine Combustion Chamber Wall Temperatures

文中提出壁温分析整理时应采用Tws=Tw(288)/T_1这一折合温度。研究结果表明,影响分管或环管型燃烧室寿命的关键部位是联焰管后第一段筒身末端及第二段筒身。该处最易发生翘曲,鼓包、变形。消除的办法是保持该处气膜冷却的稳定性。本文同时建议在对燃烧室寿命进行估算时,引入加速次数作为修正因子。

The author proposes to use a reduced temperature of T_(WS=T_W(288/T_1)during theanalysis and assessment of wall temperature test results. Investigation results show that the first section end and the second section body of a can behind the crossover tube of an annular can combustion chamber have a vital influence on the chamber life. In these locations, swelling,warping and deformation are most liable to occure. They can be prevented by organizing a stable air-film cooling in above areas.It is also proposed to introduce an accelerating frequency as a correction factor during the evaluation of the combustion chamber life.