基于半物理仿真方法的燃气轮机燃料分配特性研究  

Study on Fuel Distribution Characteristics of Gas Turbine Engine Based on Semi-Physical Simulation Method

作　　者：王欣 王继康 宋龙飞 李波 吴帆 Wang Xin;Wang Jikang;Song Longfei;Li Bo;Wu Fan(China United Gas Turbine Technology Co.,Ltd.,Beijing 100016,China)

机构地区：[1]中国联合重型燃气轮机技术有限公司,北京100016

出　　处：《燃气轮机技术》2024年第4期8-12,25,共6页Gas Turbine Technology

基　　金：国防科技创新特区基金资助项目(17-H-05-ZT-002-041-01)。

摘　　要：本文研究了基于半物理仿真方法的燃气轮机燃料分配特性。研究目的在于验证新型国产重型燃气轮机燃料分配系统的流动和分配特性。研究方法采用了结合一维流动仿真和模化试验的半物理方法,通过模化压力参数,简化一维流动网络,设计试验条件,以孔板模拟燃烧喷嘴。研究结果表明,在不同工况下,燃料分配系统的流量分配不均匀度小于1%,表明其分配特性良好。一维流动网络模型能有效识别关键节流部件,计算给出的节流条件与试验验证一致。模拟工况点试验结果证明,在保证喷嘴上下游压比大于一定值时,燃料分配系统的分配特性基本不变。This article investigates the fuel distribution characteristics of gas turbine engines based on semi-physical simulation methods.The research aims to validate the flow and distribution characteristics of a new domestic heavy gas turbine fuel distribution system.The approach combines one-dimensional flow simulation with model tests in a semi-physical method.Simplifying the one-dimensional flow network by modulating pressure parameters,the study designs test conditions and uses orifice plates to emulate combustion nozzles.The results indicate that the fuel distribution system maintains a flow distribution nonuniformity of less than 1%across various conditions,suggesting excellent distribution characteristics.The one-dimensional flow network model effectively identifies critical throttle components and provides throttle conditions consistent with test validations.The model condition point tests demonstrate that the fuel distribution characteristics remain essentially unchanged as long as the nozzle pressure ratio is maintained above a certain value.

关 键 词：燃料分配系统 模化试验 半物理仿真 环管流动特性 燃料分配均匀性 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]