The invention discloses a flow control device for the outlet of a pressure refueling pipeline, which is characterized in that a porous pipe (2) is connected to the end of the refueling pipeline, and a plurality of through holes are arranged on the wall of the porous pipe (2); the front part of the outer cover (1) is welded with the porous pipe (2), and strengthened by a support device (3); the top part of the outer cover (1) is provided with an exhaust hole (4); high-speed fuel enters into the flow control device of the outlet of the pressure refueling pipeline. After placement, the through hole of the porous pipe is ejected onto the outer cover (1) and flows into the bottom of the tank along the guide flanging of the outer cover (1). The flow control device at the outlet of the pressure refueling pipeline of the present invention enables high-speed fuel to enter the fuel tank at the time of pressure refueling to achieve deceleration, while ensuring that the fuel flow after deceleration is uniform and smooth, avoiding excessive disturbance to the deposited moisture and impurities at the bottom of the tank and possible electrostatic release, and ensuring the safety of refueling.
【技术实现步骤摘要】
一种压力加油管路出口流动控制装置
本专利技术属于飞机压力加油系统设备领域,涉及一种压力加油管路出口流动控制装置。
技术介绍
飞机在压力加油时通常流量较大以满足短加油时间的要求,当烃类液体流经金属表面时,如加油管、过滤器、喷嘴、燃油箱和机体管路等,会产生静电电荷。因此适航咨询通告中提出了压力加油时油箱出口处流速不大于1m/s,被浸没后不大于7m/s的建议。同时还提出应保证进入油箱的燃油不过分扰动油箱底部已沉积的水分及杂质,将出口设于油箱较低的位置,原因在于油箱内剩余燃油和底部沉积水分之间可能存在分界面,破坏油箱里的这个分界面会导致油气空间里的电流释放,进而点燃可燃油气混合物。一般飞机在压力加油时,进入油箱的管路出口多采用笛形管或喇叭口的结构,这两种结构倾向于单纯增加出口流通截面积,使得高速燃油进入油箱后虽然能够减速,但是燃油的流速不均匀,容易产生紊流及分离流等,对油箱底部沉积的水分及杂质会造成过分扰动,可能产生静电释放现象,点燃可燃油气混合物,造成危险。
技术实现思路
本专利技术的目的是:提出一种在压力加油时能够使得进入油箱的高速燃油实现减速,同时保证燃油流动均匀平缓的 ...
【技术保护点】
1.一种压力加油管路出口流动控制装置,其特征在于,多孔管(2)连接在加油管路末端,多孔管(2)的管壁上设有若干个通孔;外罩(1)的前部与多孔管(2)焊接,并采用支撑装置(3)加固,外罩(1)的顶部设有排气孔(4);高速燃油进入压力加油管路出口流动控制装置后,从多孔管(2)的通孔喷射至外罩(1)上,并沿着外罩(1)的导流翻边流入油箱底部。
【技术特征摘要】
1.一种压力加油管路出口流动控制装置,其特征在于,多孔管(2)连接在加油管路末端,多孔管(2)的管壁上设有若干个通孔;外罩(1)的前部与多孔管(2)焊接,并采用支撑装置(3)加固,外罩(1)的顶部设有排气孔(4);高速燃油进入压力加油管路出口流动控制装置后,从多孔管(2)的通孔喷射至外罩(1)上,并沿着外罩(1)的导流翻边流入油箱底部。2.如权利要求1所述的出口流动控制装置,其特征在于,多孔管(2)由多通孔金属板钣金成形,再与半边管路焊接得到...
【专利技术属性】
技术研发人员:滕叶,王乐,游波,陈明生,田傲,
申请(专利权)人:中航通飞研究院有限公司,
类型:发明
国别省市:广东,44
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