摘要
随着煤炭行业的高速发展,千万吨级矿井不断投产。在自动化综采工作面高产高效的要求下,装备的大型化要求不断提高。针对连接一、二级护帮千斤顶的交替双向锁在实际工作环境中面临公称流量小、压力损失严重、关闭压力低的问题,对其结构进行改进、流道进行优化。通过Pro/E对改进前后的交替双向锁进行实体建模,利用ANSYS进行模型流道抽取、网格划分及边界条件加载,运用ANSYS Fluent进行求解计算,获得介质在工作中的速度矢量图、静压云图等。将仿真结果与实验数据进行对比更新求解模型,利用迭代后的精确模型对新型结构设计进行指导。研究结果表明,通过改变阀芯结构设计和阀体流道布置,新结构交替双向锁流道90°弯折减少两处,阀体体积缩小1/3,压力损失减少65%,流量升级为125 L/min,有效降低了生产成本,提高了其在工程应用中的使用性能。
With the rapid development of the coal industry,10-million-ton mines continue to be exploited and applied.Under the requirements of high production and high efficiency in automated fully mechanized mining work face,the flow rate demand for auxiliary valve is also increasing.In terms of the pressure loss and low closing pressure of alternate two-way check valve in normal working environment,the original structure is improved and the flow channel is optimized.Firstly,establish the original and improved model of alternate two-way check valve.Then,extract the flow channel in ANSYS.Finally,import the model to Fluent to finish the simulation calculation and obtain the speed and static pressure contours of the medium.Compare the results with experimental data and update solving model.Exert the iterative accurate model to guide the design of the new structure.By changing the structure design and flow channel arrangement,90°bends reduce two places,volume reduces 1/3,and the pressure loss of the alternate two-way check valve reduces 65%,flow rate upgrades to 125 L/min,which effectively reduce production costs and improve its performance in engineering application.
作者
孟令宇
周如林
王伟
郭宗凯
MENG Ling-yu;ZHOU Ru-lin;WANG Wei;GUO Zong-kai(Beijing Tiandi-marco Electro-hydraulic Control System Co. , Ltd. , Beijing 100013;School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing 100083)
出处
《液压与气动》
北大核心
2021年第9期101-107,共7页
Chinese Hydraulics & Pneumatics
基金
中国煤炭科工集团科技创新创业基金(2020-TD-MS009)。
关键词
交替双向锁
流阻
流体仿真
大流量
alternate two-way check valve
flow resistance
flow simulation
high flow rate
作者简介
孟令宇(1990—),男,山东金乡人,助理工程师,硕士,主要从事机械液压设计方面的科研工作。
