黏性液压介质供液管路设计与密封测试

基于提高精密液压支撑结构刚度的需要,采用体积模量较大的甘油作为液压工作介质,而由此导致的黏性液体内部气泡需要作特殊处理。设计了一种适用于排除黏性工作介质的除气罐;搭建了液压支撑的供液管路。观测表明所设计的结构和管路达到了良好的除气效果。为进一步确保其支撑稳定性,还对液压支撑管路进行了密封试验。对试验数据进行最小二乘拟合后,得出了管路压强的三次多项式变化规律,为其批量应用奠定了基础。

Pipeline Design and Pressurization Test for Viscous Hydraulic Fluid

Fluid with high bulk modulus, such as glycerin, is usually used to improve precise hydraulic supports’ stiffness, whereas it makes the inner bubbles a trouble which needs special consideration. A buffer box is designed to treat with the bubbles within the viscous hydraulic fluid. A pipeline system is setup for checking the bubble treatment efficiency, which shows a significant improvement. Also the pipeline system’s pressurization, which is another key point of the buffer box, is tested for the pipeline system. After data processing through least square fitting, result shows that the pressure within the pipeline system agree with 3-order polynomial very well. The work lay a foundation for the extensive use of hydraulic supports proposed.