锻压技术

卸压阀组关键参数对卸压过程的影响

英文标题：Effect of key parameters of pressure-relief valve group on pressure-relief process

作者：韦炳旭楫骏隋岩李森肖聚亮

关键词：液压机高压容腔插装阀卸压振动

分类号：TG315.4；TH137

出版年,卷(期):页码：2014,39(8):54-58

摘要：

为给卸压阀组设计和调试时关键参数的选取提供理论依据，根据三级插装阀式卸压阀组的结构和工作原理，利用AMESim软件搭建卸压、卸荷过程仿真模型，分析卸压阀组关键参数（如插装阀阻尼孔、节流阻尼孔、电磁阀换向时间）对液压机高压容腔卸压、卸荷过程中振动和冲击的影响。结果表明，慢速卸压、快速卸荷电磁阀的换向时间相差1 s且A，B，D 3个主要节流孔直径分别为1.2，0.8和2.0 mm时，可在保证快速卸压的前提下，很好地缓解回油管路的压力、流量波动，让压力和流量变化趋于平缓，减少插装阀组的振动。

In order to provide theory basis for the selection of key parameters of the pressure-relief valve group within design and debugging, simulation model of pressure-relief and unloading process was built by using software AMESim according to the structure and working principle of three stage cartridge valve type pressure-relief valve group. Then influence of its key parameters (such as the cartridge valve orifice, throttle orifice and solenoid valve reversing time) on vibration and shock in pressure-relief and unloading processes of high pressure cavity of hydraulic press was analyzed. The results show that, with the reversing interval between slow pressure-relief and fast-unloading solenoid valves being 1 s and diameters of three primary orifices A, B and D being respectively 1.2, 0.8 and 2.0 mm, the pressure and flow fluctuations in oil-return pipe are well eased, pressure and flow in the hydraulic system change gently, and the vibration of cartridge valve group reduces as well in the condition of quick pressure-relief.

基金项目：

国家科技重大专项(2013ZX04003-031)

韦炳旭（1991-），男，硕士研究生；肖聚亮（1977-），男，博士，副教授

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