一、前言现在监视气体泄漏一般是使用浓度型检测器,但这种方式从发生泄漏到发生信号需要一定时间,常常因此引起产生许多弊端。为此这里开发了一种新式泄漏检测器,它是通过检测气体从微孔喷出时发出的超声波来判断有无泄漏的,它可以在瞬时得知泄漏的信息,使气体泄漏检测技术大大提高了。下面概略地叙述一下这种超声波传感器。二、原理气体的泄漏一般都是在小孔、缝隙及法兰盖、螺纹等部位产生的,要想统一对待很困难。但尽管有许多差别,它们却都是流向静止气体中,也就是说可以作为射流来考虑的。 I. INTRODUCTION Nowadays, it is common to use concentration detectors to monitor for gas leaks. However, this method takes a certain amount of time from leakage to signal generation and often causes many drawbacks. To this end, a new leak detector has been developed to detect the presence or absence of leaks by detecting the ultrasonic waves emitted when the gas is ejected from the micropores. It can instantly detect the leak information and greatly improve the gas leak detection technology It’s The following is a brief description of this ultrasonic sensor. Second, the principle of gas leaks are generally in the holes, cracks and flange cover, thread and other parts of the generated, to be treated very difficult. But despite many differences, they all flow into still gas, which means they can be considered as jets.