介绍板翅式换热器气密性检漏的常用方法及其优缺点,阐述使用水平面气泡法进行板翅式换热器气密性检漏试验的器材、流程、准备工作、具体步骤和试验数据。通过对比应用水平面气泡法与其他方法进行气密性检漏的结果,得出水平面气泡法具有时间短、效率高、易操作、成本低、准确率高的优点。 This paper introduces the commonly used methods and their advantages and disadvantages of gas-tight leak detection of plate-fin heat exchangers, and describes the equipment, flow, preparation, concrete steps and tests of gas-tight leak testing of plate-fin heat exchangers by using the horizontal bubble method data. By comparing the results of leak testing with other methods, the conclusion is drawn that the bubble method has the advantages of short time, high efficiency, easy operation, low cost and high accuracy.