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为了探索一种超高压高效无环动密封的可行性 ,对增压过程进行了运动学分析 ,得到了制约往复增压系统压力生成能力的影响要素。提出了提高系统容积效率和系统压力生成能力的解决方案。研究表明 :系统的压力生成能力不仅与密封间隙相关 ,同时与系统的死点容积、增压速度及排液容积相关。高压下 ,增大死点容积会降低系统的容积效率。试验结果表明 ,新密封结构能有效地提高系统压力生成能力和容积效率 ,高效的密封结构可实现 1GPa乃至更高压力的动密封。
In order to explore the feasibility of an EHV ECHR, the kinetic analysis of the supercharging process was carried out. The influencing factors of the pressure generating capacity of the reciprocating supercharging system were obtained. Proposed to improve the system volumetric efficiency and system pressure generating solutions. The research shows that the pressure generation capability of the system is not only related to the seal clearance, but also relates to the system dead center volume, supercharging speed and displacement volume. Under high pressure, increasing the dead volume will reduce the volumetric efficiency of the system. The test results show that the new seal structure can effectively improve the system pressure generating capacity and volumetric efficiency, and the highly efficient sealing structure can achieve the dynamic sealing of 1 GPa or even higher pressure.