Pressure impact characteristic of vane type continuous rotary motor under different buffer structures
Pressure impact characteristic of vane type continuous rotary motor under different buffer structures
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DOI：
10.1007/s11771-020-4571-z
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发表时间：
2020-12-01
影响因子：
4.4
通讯作者：
Shen, Zhi-qi
中科院分区：
文献类型：
--
作者：
Wang, Xiao-jing;Hu, Shan-liang;Shen, Zhi-qi
为了解决连续旋转电液伺服电机的压力冲击问题，建立了预压缩室和u型槽结构下的压力梯度数学模型。确定了预压缩室和u型槽的最佳结构尺寸。采用Solidworks软件建立了三角形沟槽、三角形沟槽带预压室、u型沟槽和u型沟槽带预压室四种结构下的流体模型。基于FLUENT软件对流体模型的降压过程进行了仿真分析。对比分析了不同缓冲结构的压力云图，得到了减压过程中的压力变化曲线和压力梯度变化曲线。结果表明，连续旋转电液伺服电机在减压过程中，预压缩室的最佳边缘长度为20 mm；u型槽宽度为1.5 mm，深度为1.65 mm时，减压效果最好。与不同组合缓冲结构相比，带预压缩室的u型槽结构更有利于缓解电机的压力冲击现象。
In order to solve the problem of pressure shock on the continuous rotary electro-hydraulic servo motor, the mathematical models of pressure gradient under the structure of pre-compressed chamber and U-shaped groove were established. The optimal structure dimensions of the pre-compressed chamber and the U-shaped groove were determined. The fluid models were established by Solidworks under the four structures of triangular groove, triangular groove with pre-compression chamber, U-shaped groove and U-shaped groove with pre-compression chamber. Simulation analysis of depressurization process of fluid models was performed based on FLUENT. The pressure nephograms of different buffer structures were compared and analyzed, and the pressure change curves and pressure gradient change curves in the process of depressurization were obtained. The results show that the optimal edge length of the pre-compressed chamber of continuous rotary electro-hydraulic servo motor is 20 mm in the process of decompression. The pressure reduction effect is the best when the width of the U-shaped groove is 1.5 mm and the depth is 1.65 mm. The U-shaped groove structure with pre-compression chamber is more conducive to alleviate the pressure shock phenomenon of the motor compared with different combine buffer structures.