Fabrication and Evaluation of Hydraulic Particle Excitation Valve Vibrated Perpendicularly to Direction of Flow Path
Fabrication and Evaluation of Hydraulic Particle Excitation Valve Vibrated Perpendicularly to Direction of Flow Path
复制标题
垂直于流路方向振动的液压粒子激励阀的制作与评价
DOI：
10.5739/jfpsij.11.9
复制
发表时间：
2018
影响因子：
0.8
通讯作者：
T. Kanda
中科院分区：
文献类型：
--
作者：
Takahiro Ukida;K. Suzumori;Hiroyuki Nabae;T. Kanda
2 /s，压力小于0.5MPa。这是因为打开阀所需的力由于操作压力和粘度的增加而增加。在本文中，以前的结构的阀门进行修改，使所需的力打开阀门减少。新结构的提动头和阀座在垂直于将提动头压向阀座的压力所产生的力的方向上振动。介绍了一种由不同方向的振动驱动的新型粒子激励控制阀。传统的小型液压伺服阀存在结构复杂、浪费液压能量等缺点。为了解决这些问题，研究了一种采用压电振子的小型液压控制阀。我们证实，建议的控制阀与低粘度流体在我们的previous研究。然而，控制阀不能用高粘度流体操作，因为打开阀所需的力由于粘度的增加而增加。在本文中，一个新的原型阀由垂直于流动方向的振动驱动的制造，以实现与普通液压油的阀门操作，并由于阀座形状的变化的阀门的特性进行了评估。通过计算，找出了阀座锥角的最佳值。当阀座的锥角为100°时，原型阀可以通过比其他锥角更小的电压打开。另外，当工作介质为运动粘度为30 mm 2 /s（与普通液压油的运动粘度相当）的硅油时，阀在0.8MPa时开启成功。由于以前的粒子激励阀不能在高粘度工作流体中打开，目前的结果表明，建议的阀与普通液压油操作的可能性。
2 /s, was used as the working fluid and the applied pressure was less than 0.5 MPa. This is because the force required to open the valve increases due to an increase in the operating pressure and the viscosity. In this paper, the previous structure of the valve is modified so that the force required to open the valve is reduced. The poppet and the valve seat of the new structure are made to vibrate in a direction perpendicular to the force due to the pressure which presses the poppet to the valve seat. We aim We introduce a new particle excitation control valve driven by the vibration from a direction different than that of th e previous particle excitation control valve. Conventional small hydraulic servo valves have a few disadvantages, s uch as a complex structure and waste of hydraulic energy. To solve these disadvantages, a small hydraulic control valve using a piezoelectric vibrator was studied. We confirm that the proposed control valve was operated with a low viscosity fluid in our pr evious research. However, the control valve was not operated with a high viscosity fluid as the force required to open the valve increases owing to increase in the viscosity. In this paper, a new prototype valve driven by the vibration perpendicular to the direction of flow was fabricated to achieve valve operation with a common hydraulic oil, and the characteristics of the valve due to a change in the valve seat shapes were also evaluated. As a result, we found the optimum value of the taper angle of the v alve seat. When the taper angle of the valve seat is 100°, the prototype valve can be opened by a lesser voltage than the other taper angles. In addition, when the silicone oil was used as the working fluid with a kinematic viscosity of 30 mm 2 /s, approxima tely equal to the kinematic viscosity of the common hydraulic oil, we succeeded in opening the valve at 0.8 MPa. Because the previous particle excitation valve could not be opened in a high viscosity working fluid, the present results indicate a possibility for operating the proposed valve with the common hydraulic oil.