航天推进技术研究院主办
Wang Dingjun,Wang Xinjian,Fang Jihan,et al.Study on the safety valve of an attitude control system[J].Journal of Rocket Propulsion,2008,34(03):31-34.
姿态控制系统安全阀排放研究
- Title:
- Study on the safety valve of an attitude control system
- Keywords:
- attitude control system; regulator; safety valve; exhaust
- 分类号:
- V434
- 文献标志码:
- A
- 摘要:
- 恒压挤压式姿态控制系统一般采用压力调节器对气瓶中的高压气体进行调节, 并采用安全阀保证系统的安全。设计时一般保证压力调节器节流口在任何情况下均为临界截 面。气体通过压力调节器节流口后压力降低。一般远高于大气压力。由于节流口后气流涡流 和管路摩擦的作用,气流在到达安全阀排放口后。仍然为临界流动状态。因此,可以采用收 缩喷嘴节流公式计算压力调节器节流口和安全阀排放口的压力和流量参数。根据该数学模型。 计算了姿态控制系统安全阀前气体压力和流量。试验结果表明所采用的计算方法可行。
- Abstract:
- A safety valve is set up to keep the attitude control system in a safe range.The regu— lator is designed to ensure the regulator orifice to be a critical crosssection in any case.The pressure is decreased through the regulator but it is still much higher than the atmospheric pressure.Because of the swirl and friction,the discharge port of the safety valve maintains a critical crosssection.The pressure and flowrate can be calculated by the convergent nozzle formula.The experiment results show that the mathematical model iS credible.
参考文献/References:
[1]葛顺源.安全阀的选用及喉径计算田化学工程.1997,(3):
6一17.
[2]李鸣,周国发.安全阀临界压力比研究[J].石油化工设
备.1999,28(3):23-26.
f3]刘永军.安全闵流束动压系数的计算[J].气体分离.
2004,(3):24-26.
[4]周国发.安全阀流阻特性及其影响因素的研究[J].流体
机械.1997,25(1):ll一14.
[5]王保围,刘淑艳,黄伟光.气体动力学(第l版)[M].北京:
北京理T大学出版社,2005。8.
[6]潘锦珊.气体动力学基础(第3版)[M].西安:西北工业大
学出版社.1995.6.
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备注/Memo
收稿日期:2006-10—26;修回日期:2007-01—10。 作者简介:王定军(1977一),男,硕士,研究领域为火箭姿态控制系统。