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为满足工业流程自动化中滞后较大对象的调节需要,我厂将原生产的EWY-303型电子电位差计(带比例积分作用的气动调节装置)加上微分作用,经过一年多时间的现场运转,效果较好。 TQL型调节装置的原理见图经过泸后减压为1.4公斤力/厘米～2的压缩空气进入放大器后分两路,为放大器的输出提供能源,另一路则经恒节流孔(20)和喷嘴(10)排入大气。恒节流孔的直径约为喷嘴直径的2/5。当挡板与喷嘴端面的距离改变时,就改变了喷嘴节流作用的大小,从而引起喷嘴
In order to meet the needs of the larger objects in lagging behind in the industrial process automation, our factory added the original EWY-303 electronic potentiometer (pneumatic adjustment device with proportional integral action) to the differential function, and after more than a year’s site Running, the effect is better. TQL-type regulator device shown in Figure After the lu pressure after decompression to 1.4 kg / cm ~ 2 compressed air into the amplifier after the two-way, to provide energy for the amplifier output, the other way through the constant orifice (20) and Nozzle (10) is vented to the atmosphere. The diameter of the constant orifice is about 2/5 of the nozzle diameter. When the distance between the baffle and the end surface of the nozzle is changed, the size of the orifice throttling effect is changed, causing the nozzle