上海交通大学学报(自然版) ›› 2017, Vol. 51 ›› Issue (8): 946-953.doi: 10.16183/j.cnki.jsjtu.2017.08.008

• 兵器工业 • 上一篇    下一篇

 工作于室温温区的热力学排气模拟与增压测试

 陈忠灿1,李鹏2,孙培杰2,王天祥3,李晓慈1,黄永华1   

  1.  1. 上海交通大学 制冷与低温工程研究所, 上海 200240;
    2. 上海宇航系统工程研究所, 上海 201108; 3. 航天低温推进剂技术国家重点实验室, 北京 100028
  • 出版日期:2017-08-30 发布日期:2017-08-30
  • 基金资助:
     

Simulation of a Thermodynamic Vent System Working at
 Room Temperature and Its Preliminary Pressurization Testing 

 CHEN Zhongcan1,   LI Peng2,  SUN Peijie2,  WANG Tianxiang3,  LI Xiaoci1,  HUANG Yonghua1   

  1.  1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240,
    China; 2. Shanghai Institute of Aerospace System Engineering, Shanghai 201108, China;
    3. State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China
  • Online:2017-08-30 Published:2017-08-30
  • Supported by:
     

摘要:  为了揭示热力学排气系统的基本运行规律和为相关仿真程序的开发提供校核数据,设计和研制了一套工作于室温温区的热力学排气系统模拟装置.该装置安装于直径为450mm、体积约为0.11m3的椭圆封头圆筒形贮箱内,以制冷剂R141b为工质,选取具有代表性的充灌率和罐体热负荷,分别进行了喷射棒单独作用及喷射棒与节流阀、换热器共同作用下的贮箱压力控制实验,获得了相应工况下的压力控制特性.实验结果表明,当贮箱表压控制带下限设定为80kPa,上限设定为90kPa时,在单单依靠喷射棒的喷射混合消除热分层工作模式下,该系统运行超过0.98h后已无法维持压力在设定值以下;而在喷射棒和节流阀、换热器双重作用下,该系统可长期持续工作,2h内制冷剂R141b损失仅约5% (3.35kg),验证了该套系统可以胜任热力学排气过程的模拟.

关键词:  , 热力学排气, 性能测试, 压力控制, 混合, 储存

Abstract:  A thermodynamic vent system with refrigerant R141b as working substance has been established for the purpose of revealing the primary principle and validating a modeling program. The experimental TVS was installed within a tank with a 450mm inner diameter cylinder and two  under development elliptical domes, and has a total volume of 0.11m3 approximately. Tests of pressure control under the action of spray bar alone and the joint action of spray bar, throttle valve and heat exchanger were conducted with representative input heat and fill level. The results showed that the experimental system could successfully control the ullage gauge pressure between 80 and 90kPa for 0.98 hour by operating the spray bar alone, while in the combined operation mode only 5.8% (3.35kg) of R141b was vented in 2 hours. The ability of this system for simulating the thermodynamic vent process of evaporative fluids was validated.

Key words:  thermodynamic vent, performance test, pressure control, mixing, storage

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