原来的气体传感器全部是直接触及泄漏气体而工作的。因此,从产生气体泄漏到传感器附近而达到气体浓度检测水平,需要一定的时间。所以,从气体泄漏到发出报警,就有一个时间延迟。 目前,这个延迟时间还没有对设备的安全造成太大的危害。但是,在今后的以燃气轮机为主的大型供气设备的普及中,人们则希望能够尽量缩短这个延迟时间。 而本文介绍的超声波气体泄漏检测器,是采用检测气体喷出时所产生的超声波,来达到检测气体泄漏的目的,从而实现瞬时检测。 All of the original gas sensors work directly with the leak gas. Therefore, it takes a certain amount of time from the generation of gas to the vicinity of the sensor to reach the gas concentration detection level. So, there is a time delay from gas leak to alarm. At present, this delay has not caused much harm to the safety of the equipment. However, in the future, large-scale gas turbine-based gas supply equipment, people are hoping to minimize this delay. The ultrasonic gas leakage detector introduced in this paper is used to detect the gas emitted when the ultrasonic waves to achieve the purpose of detecting gas leaks in order to achieve instantaneous detection.