真空多层绝热式低温加泄连接器绝热设计.pdf

上海航天第33卷2016年增刊AEROSPACE SHANGHAI文章编号:1006-1630(2016)S1-0145-04真空多层绝热式低温加泄连接器绝热设计孙俊成,徐华,袁菲,孟长建(上海宇航系統工程研究所,上海201109)摘要:根据新一代载火箭的使用需求,设计了一种真空多层绝热式低温加泄逹接器。连接器真空夹层由内管、外管、波纹管组件組成,要求真空央层最大允许漏率410-6Pa?L/s,连接器的热损失3.13W。计算了连接器的辐射传热、输送管单位管长绽銳层固体导热、真空夹层内的残余气体分子热传,以及热桥传热,发现涌热主要源于内外管间的热桥。对连接器的绝热性能进行试验验证,结果表明除加注软管对接法兰位置有结霜外,其他位置温度均在0以上。该低温加泄连接器已成功用于新一代运戟火箭关词:运我火箭;真空多层绝热;低温加泄连接器;绝热设计;真空结构;传热计算;满热;热桥传热中図分类号:V421文獻标志码:ADOI:10.19328/j.cnki.1006-1630.2016.S1.027Insulation Design of Low Temperature Connector with Vacoum Multilayer InsulationSUN Jun-cheng, XU Hua, YUAN Fei, MENG Chang jianAerospace System Engineering Shanghai, Shanghai 201109, China)Abstract: A low temperature connector with vacuum multilayer insulation was designed for the requirement ofnew generation launch vehicle in this paper. The vacuum structure of the connector consisted of inner tube, outertube and bellows. The maximum permitted leak rate of the vacuum jacket was limited within 4X10-PAL/s, andthe thermal loss of the connector was 3. 13 W, Four ways of the connectors heart transfer, which were radiationolid contact conduction of winding layers, residual gas conduction, and thermal bridges conduction, werecalculated. It was indicated that the thermal loss was mainly from the thermal bridges bet ween the outer tne andinner tube. The thermal insulation performancc had been confirmed through cxperiments. The results showed thathe temperaturc of connector was above 0 C except the flange, which was connected with injcction tube. Tconnector had been successfully applied to the new generation launch vehicle.Keywords: Launch vehicle; Vacuumn multilayer insulation; Low temperature connector; Insulation designVacuum strueture; Calculation of heat transfer; Heat leakage; Heat transfer of thermal bridge结冰情况。连接器的锁紧与自动脱落是通过气动新一代运载火箭采用液氧煤油为主要推进控制实现,气动组件的密封采川榱胶O形圈的密剂,由于液氧沸点低、易汽化的特点,对低温加注封方式,如温度过低,橡胶弹性降低将丧失密封性设备的绝热提出了较高要求。加注设备中,加泄能。为满足上述要求,新一代运载火箭低温加泄连接器是用于连接地面加注系统与箭上加注阀门迮接器需具备优良的绝热性能。现有国内运载型之间的最后一环,需具备与箭上的可靠锁紧、可靠号的液氢、液氧连接器采用在连接器表面包覆聚密封、射前自动脱落、脱落后可再次对接等功能。氨酯泡沫塑料的堆积绝热方式。该绝热形式在经为保证与箭上部分顺利分离,连接器应避免出现多次使用受低温、常温多次冲击后,连接器壳体与外壁包覆绝热材料可能出现脱粘、绝热层开裂并收稿日期:2016-04-10;修回日期:20160422吸收空气中水分的现象,导致绝热效果降低。为作者简介,孙俊成(198-),男,工程师,主要研党方南为地面此,本文对一种真空多层绝热式低温加泄连接器发射支持系统设汁设计进行了研究万方数据