基于能量转换的桥式气动节能回路研究

传统的气动驱动回路一般使用三位五通换向阀进行控制,压缩气体的利用率较低。针对这一问题,提出一种采用4个开关阀控制的桥式气动回路,以提高压缩空气的利用率。桥式气动回路节能的核心是充分利用压缩气体的膨胀能做功推动活塞运动。以活塞杆伸出行程为例,基于能量转换,根据活塞运行过程中进气腔和排气腔气体的做功来计算开关阀的开闭时序。对计算得到的开关阀开闭时序进行实验验证,并与传统的气动回路进行对比。实验结果表明,与传统气动回路相比,提出的桥式气动回路能够有效地提高气动驱动系统中压缩空气的利用率。

Research on Bridge Pneumatic System Through Energy Conversion

The traditional pneumatic drive circuit usually uses three position five way reversing valve to control, and the utilization ratio of compressed gas is low. To solve this problem, a bridge pneumatic circuit controlled by four on-off valves is put forward to improve the utilization ratio of compressed air. The core idea of the energy saving of the bridge pneumatic circuit is to make full use of the expansion of the compressed gas for pushing the piston movement. In this paper, based on the idea of energy conversion, the opening and closing time sequence of the valves is calculated on the basis of the energy conversion, taking the piston rod extension process as an example. The on-off valve opening and closing sequence is verified by experiments, and compared with the traditional pneumatic circuit. The experimental results show that the bridge pneumatic loop proposed in this paper can effectively improve the utilization rate of compressed gas in the pneumatic drive system compared with the traditional pneumatic loop.