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气动放大器在我国化工自动化仪表上早已得到广泛的应用,但应用在氧气呼吸器供氧装置上还是第一次。AHG—3型氧气呼吸器就是采用了这种装置。通过理论分析、工厂试验和工业性试验证明,该装置是可行的。现将情况介绍如下:1、工作原理应用气动放大原理的自动供氧装置,实际上是由一个喷嘴挡板放大器和一个功率放大器组成,如图1,上部是喷嘴挡板放大机
Pneumatic amplifier in China has long been widely used in chemical automation instrumentation, but the oxygen device used in oxygen breathing apparatus for the first time. AHG-3 oxygen breathing apparatus is the use of this device. Through theoretical analysis, factory tests and industrial tests show that the device is feasible. Now the situation is as follows: 1, the working principle of the use of pneumatic amplification principle of automatic oxygen device, in fact, by a nozzle baffle amplifier and a power amplifier, as shown in Figure 1, the upper nozzle baffle amplifier