Air tightness detection clamp

The utility model provides an air tightness detection clamp. The air tightness detection clamp comprises a workbench; the base is fixedly installed on the workbench, a first sealing protrusion and a second sealing protrusion are arranged on the base, the first sealing protrusion is matched with a first welding end on the exhaust casting, and the second sealing protrusion is matched with a first flange end on the exhaust casting; the first pressing and blocking telescopic rod is installed on the base in a sliding mode, and the first pressing and blocking telescopic rod is suitable for sealing a second welding end on the exhaust casting; and the second pressing and blocking telescopic rod is installed on the base in a sliding mode, and the second pressing and blocking telescopic rod is suitable for sealing a second flange end on the exhaust casting. The utility model provides an air tightness detection clamp which is used for detecting the air tightness of an exhaust casting. 本实用新型提供了一种气密性检测夹具，包括：工作台；底座，所述底座固定安