考虑可调静叶压气机的船舶燃气轮机仿真优化

Simulation optimization of marine gas turbine with VSV compressor

作为燃气轮机防喘措施之一,压气机可调静叶在变工况下的调节方案对燃机的运行性能具有重要影响。以某型三轴船舶燃气轮机为研究对象,建立了考虑变几何压气机的燃机系统仿真缩放(0维-1维)模型。以提高燃机运行效率为目标,通过系统仿真,得到了各个工况下低压压气机前三级可调静叶的最佳开度及整机稳态性能。仿真结果表明,与原始的可调静叶调节方案相比,采用优化方案可以提高燃机在各个工况下的经济性和稳定性,对燃机总体性能有更加积极的影响。

As an anti surge technique,the adjustment scheme of the VSV compressor under off design working conditions has a significant effect on the performance of a gas turbine.A variable dimensions(0D1D)system simulation model of a triaxial gas turbine was established,which considered the performance of variable geometry compressor.To improve the operating efficiency of gas turbine,the optimized adjusting scheme of the first three rows of VSV and the steady state performance of the gas turbine under different working conditions were obtained by using the system variable dimensions simulation model.Simulation results show that compared with the original adjusting scheme for VSV,the optimized scheme can improve the economic benefit and stability of the gas turbine under various working conditions,which has a more positive effect on the overall performance of the gas turbine.