Storage tank for airport skid-mounted gravity refueling system

The utility model discloses a storage tank for an airport skid-mounted gravity refueling system, which comprises a storage tank and an auxiliary convex fixing support, and the storage tank is connected to the auxiliary convex fixing support through a height adjusting structure; the height adjusting structure comprises a pair of supporting blocks, a pair of concentric-square-shaped lifting blocks, two pairs of lifting threaded rods, two pairs of lifting threaded pipes, two pairs of lifting drivers, two pairs of lifting driving bevel gears, two pairs of lifting transmission bevel gears, a limiting lifting assembly and an auxiliary supporting assembly. The utility model relates to the technical field of airport gravity refueling, which is characterized in that the height of a storage tank is changed through a height adjusting structure, the gravitational acceleration in the drainage process is changed by moving the height of the storage tank, and an inverted U-shaped tubular structure is filled with liquid by ut