高压电磁阀多阀体相差流量调节技术研究

Study on Phase Control of Output-flow of High-pressure Solenoid Valves

高压先导式电磁开关阀为了实现大流量输出,通常要增大主阀芯的直径,也相应地需要增加导阀和电磁铁的尺寸,这使得先导阀和主阀的响应时间延长,难以达到快速性的要求。提出了一种新的技术方法,可实现快速的大流量输出。其基本原理是采用多个能快速响应的小流量电磁阀,通过对每个阀进行开启的相位控制,使总的输出流量既能达到大流量需求,又能达到单个阀所具有的快速响应性,同时,还可以在一定范围内实现流量的拟线性调节。介绍了相应的相位差控制模型和试验数据,结果表明该方法是有效可行的,为高压气动控制系统中负载速度的控制提供了一种新的技术途径。

In order to realize large flow output of the high pressure guiding type electromagnetic switch valve, the diameter of the main valve core and the size of the pilot valve and the magnet should be increased, thus making the response time of the pilot valve and main valve delay and it is difficult to meetve the requirement of its fast apeed. This paper puts forward a new technical method which can be used to output the large flow rapidly. Its basic principle is to use multiple small flow solenoid valves that can respond quickly. The total output flow can fulfil the requirements of the large flow and rapid response and the flow is adjusted quasi-linearly with in a certain scope by the phase control. This paper also introduces the corresponding phase control model and experimental da- ta. The results show that the method is effective and feasible. A new technical way is provided for controling the speed of load in high pressure pneumatic control system.