| 液体火箭发动机涡轮泵密封组件静力学特性 |
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| 引用本文： | 徐云飞,刘丽,徐学军,李锋,黄道琼,段捷.液体火箭发动机涡轮泵密封组件静力学特性[J].火箭推进,2017,43(3). |
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| 作者姓名： | 徐云飞 刘丽 徐学军 李锋 黄道琼 段捷 |
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| 作者单位： | 1. 西安航天动力研究所, 陕西西安710100;液体火箭发动机技术国防科技重点实验室, 陕西西安710100;2. 西安航天动力研究所,陕西西安,710100;3. 航天推进技术研究院,陕西西安,710100 |
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| 摘 要： | 为了提高液体火箭发动机涡轮泵端面密封的气检合格率,开展了密封组件的静力学特性分析。采用有限元法建立了密封端面接触分析模型,针对石墨环装配过盈量、弹簧刚度偏差与气检压力3个方面进行了仿真计算,获得了端面变形量和密封压力分布的变化规律。计算结果表明:在0.13 mm过盈量下,石墨环上端面高度差为7.2μm;弹簧刚度偏差量变化引起的动静环端面压力分布最大差值约0.1 MPa;在气检过程中密封端面呈环形的压力分布。
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| 关 键 词： | 液体火箭发动机 密封组件 静力学特性 密封压力分布 有限元法 |
Static mechanical characteristics of turbopump seal assembly in liquid rocket engine |
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| XU Yunfei,LIU Li,XU Xuejun,LI Feng,HUANG Daoqiong,DUAN Jie.Static mechanical characteristics of turbopump seal assembly in liquid rocket engine[J].Journal of Rocket Propulsion,2017,43(3). |
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| Authors: | XU Yunfei LIU Li XU Xuejun LI Feng HUANG Daoqiong DUAN Jie |
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| Abstract: | To rise the checking qualification rate of seal in turbopump end face in liquid rocket engine, the static mechanical characteristics of seal assembly is analyzed. The contact analysis model of seal assembly was set up with FEM. The simulating calculation for fit tolerance of graphite ring, bias of spring stiffness and checking pressure was performed to get the variation law of end-face deformation and sealing pressure distribution. The result indicates that the end face height difference of graphite ring upper surface is 7.2μmat fit tolerance of 0.13 mm, the biggest different value of pressure distribution on end faces of moving ring and static ring is 0.1 MPa, which is caused by bias of spring stiffness, and the pressure distribution of sealing end-face appears in circular shape in the process of sealing checking. |
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| Keywords: | liquid rocket engine seal assembly static mechanical characteristic sealing pressure distribution finite element method |
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