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诊断内燃机车柴油机冷却系统的重要任务之一是及时查出内燃机气缸中的燃气泄漏而进入水冷系统。许多机务段都用超声波方法来检查漏气。在水套至缸套的上部水接头的清除了污垢及油漆涂料的区段上装有正向压电变换器。正向压电变换器与普通的超声波探伤器(如ДyK-66Ⅱ)相连。超声波振动垂直进入接头的表面。在这种情况下,可以采用任何一种没有外来机械杂质的矿物油作耦合剂。如果水中没有漏气,那么在探伤器的荧光屏上就可以看到高度基本相同的脉冲。在
One of the important tasks of diagnosing the diesel engine cooling system of diesel locomotive is to find out the gas leakage in the cylinder of the internal combustion engine and enter the water cooling system in time. Many locomotive depots use ultrasonic methods to check for leaks. Forward piezoelectric transducers are mounted on the decontaminated and paint-coated sections of the upper water fitting of the water jacket to the liner. The forward piezoelectric transducer is connected to a conventional ultrasonic flaw detector (eg, ДyK-66Ⅱ). Ultrasonic vibration vertically into the surface of the connector. In this case, any mineral oil free from foreign mechanical impurities can be used as the coupling agent. If there is no leak in the water, a pulse of substantially the same height can be seen on the detector’s screen. in