The invention discloses a rapid
buoyancy adjusting device of an
underwater glider. The rapid
buoyancy adjusting device comprises a sealed shell and an
air pump, wherein the
air pump is arranged in the sealed shell and driven by a
direct current motor. An integrated
cartridge valve block is arranged on the front portion of the
air pump. A two-position two-way normally-closed hydraulic
electromagnetic valve, a two-position two-way normally-closed pneumatic
electromagnetic valve and an air outlet connector connected with a high-pressure-resistant air outlet
pipe are arranged on the front portion of the integrated
cartridge valve block, and the other end of the high-pressure-resistant air outlet
pipe is connected with an external air bag. An air inlet connector connected with an air inlet
pipe is arranged on the lower portion of the integrated
cartridge valve block. A
seawater detector mounted on the integrated cartridge valve block is arranged on the inner side of a valve block hook, and the inner side of the valve block hook is connected with an air
pressure sensor through an auxiliary hole adapter. The outlet end of the air pump is connected with a one-way valve which is mounted inside the integrated cartridge valve block, and the one-way valve is connected with an adjustable air overflow valve mounted on the lower portion of the integrated cartridge valve block. The rapid
buoyancy adjusting device has the advantages that the buoyancy can be rapidly adjusted, the
work time on the water surface of the
glider is shortened, the severe influence caused by accidental damage to the external air bag is avoided, and debugging, installing and maintaining of the whole
glider in the later period are facilitated.