船舶动力装置排气红外抑制装置性能  

Performance of Infrared Exhaust Suppression Device of Marine Power Plant

作　　者：孙清磊 万雷 石玥 SUN Qinglei;WAN Lei;SHI Yue(A Project Management Center of the Naval Armament Department,Beijing 100071,China;Power and Energy Engineering School,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]海军装备部某项目管理中心,北京100071 [2]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《机电设备》2024年第2期1-7,共7页Mechanical and Electrical Equipment

摘　　要：随着船舶动力装置的排气温度日渐升高,所产生的红外辐射逐渐增强,而辐射源是军事中红外制导武器的主要目标,容易被红外武器锁定,舰船的生命安全受到更大威胁。为降低排气系统的温度提高舰船安全性,以带有某型引射器为研究对象,探究不同工况下以及不同结构参数对引射器性能影响。结果表明,引射系数增大时混合度趋近1,引射器的引射能力增强。主流喷口与混合段距离增大,会导致引射系数增加、总压损失降低、混合度先减小后增加、出口总温降低;多级引射器进口面积增大,引射系数先降低后增加指0.95,总压损失降低,出口总温小幅度波动;增加多级引射器级数,引射系数增加,总压损失降低,引射器出口总温降低,该结论可以用于红外抑制器设计过程,提高整体性能。With the increasing exhaust temperature of ship power plant,the infrared radiation generated is gradually enhanced,and the radiation source is the main target of military infrared guidance weapons,which is easily locked by infrared weapons,and the life safety of ships is more threatened.In order to reduce the temperature of the exhaust system and improve the safety of the ship,an ejector as the research object is taken,and the influence of different working conditions and different structural parameters on the performance of the ejector are explored.The results show that when the entrainment ratio increases,the mixing degree approaches 1,and the entrainment capacity of the ejector is enhanced.The increase of the distance between the main nozzle and the mixing section will lead to the increase of the ejection coefficient,the decrease of the total pressure loss,the decrease of the mixing degree and the decrease of the total outlet temperature.The inlet area of the multi-stage ejector increases,the ejection coefficient decreases first and then increases by 0.95,the total pressure loss decreases,and the total outlet temperature fluctuates slightly.By increasing the number of stages of the multi-stage ejector,the ejection coefficient increases,the total pressure loss decreases,and the total outlet temperature of the ejector decreases.Based on the conclusions of this paper,it can be used in the design process of infrared suppressor to improve the overall performance.

关 键 词：船舶 排气引射器 数值模拟 引射系数 结构参数 

分 类 号：U664.6[交通运输工程—船舶及航道工程]