Liquefied petroleum gas steel cylinder airtightness test equipment

The utility model relates to liquefied petroleum gas steel cylinder airtightness test equipment, which comprises a test water tank, support legs are fixed on the periphery of the bottom of the test water tank, a drain pipe is fixed at the bottom of the outer surface of the test water tank, support plates are fixed at the left end and the right end of the test water tank, and a bracket is fixed between the upper surfaces of the two support plates. An adjusting mechanism is arranged on the bracket, and a placing plate is arranged at the lower end of the adjusting mechanism; the adjusting mechanism comprises fixing plates fixed to the left end and the right end of the upper surface of the support, a rotating rod is rotationally connected between the two fixing plates, and gears are fixed to the left end and the right end of the outer surface of the rotating rod. According to the liquefied petroleum gas steel cylinder airtightness test equipment, the adjusting mechanism connected with the placing plate is arrange