一、概述当隔爆型电气设备的隔爆外壳很小时，对其进行参考压力测定、强度和隔爆性能试验，往往由于其外壳小，表面形状及材质（如陶瓷、塑料）的限制，致使所需测试元件，如压力传感器、火花塞，迸、出气导管等，无法在外壳上安装，使试验无法在实际产品上进行。这时，只能采 First, an overview When flameproof enclosures explosion-proof electrical equipment is small, its reference pressure measurement, strength and explosion-proof performance test, often due to its small shell, surface shape and material (such as ceramics, plastic) restrictions, resulting in The required test components, such as pressure sensors, spark plugs, bursts, outlet ducts, etc., can not be mounted on the enclosure, making the test impossible to carry out on the actual product. At this time, only mining