Fuel oil system gas tightness test sampling device

The utility model provides a fuel oil system gas tightness test sampling device, includes the cassette, and the symmetry is equipped with afterburning pole in the outer fringe of cassette, is equipped with on the bottom surface of cassette can hold the oil tank and refuel the recess of end, is equipped with the air duct in the cassette centre bore, and expose outside the cassette air duct upper end, and air duct surface department is equipped with a plurality of air guide holes, and the air duct lower extreme forms the ring channel between baffle outer fringe face and the recess wall be fixed in the recess through the baffle on it in, is equipped with fixed connection's sealed pad in the ring channel, and it has the chuck to serve the cover under the air duct, chuck and baffle bottom surface fixed connection, the hole diameter of chuck diameter and oil tank oil filler hole suits, the circumference equipartition has the chucking arm in the outer fringe of chuck, and the circumference equipartition is edgewise located to the bottom surface of chuck has jump ring arc, chucking arm and jump ring arc staggered arrangement, chucking arm up end is the arcwall face. The device is small, the quality is light, sealing performance is good, and easy operation is convenient, can high-efficiently, swift, high-quality be connected with the oil tank oil filler hole.