The gas pressure inside the underwater casing external pressure and manner and the device null containment in equilibrium

摘要

PURPOSE: To perform great depth diving by a method wherein a number of variable bags filled with respectively different pressure gases are simultaneously sunk in water and when a hydrostatic pressure coincides with a pressure in a bag, a housing and the bag are automatically intercommunicated or separated away from each other in this device for an electroacoustic transducer. CONSTITUTION: Bags 5-7 filled with respective different pressure gasses coupled to a casing 1 of a transducer through a three-way valve 12, a manifold 4, a dehumidifier 3, and a pipe 2 are simultaneously sunk in water. In this case, the bag 5 is brought into an atmospheric pressure or a slightly higher pressure and coupled directly to an air pipe not through the valve 12. During sinking in water, the action of a hydrostatic pressure is exerted on the three-way valves 12 of the bags 6 and 7. When the hydrostatic pressure reaches a pressure in the bag, the valve 12 is opened and gas flows in the housing 1. Reversely, during floating, the valve is closed. This constitution executes great depth diving.