The invention relates to the technical field of
underwater energy storage, and discloses a deepwater high-pressure
compressed air energy storage unit which comprises a hose, a connecting
flange, a sealing
assembly, an inflation / deflation control module and a counterweight
assembly, the air
energy storage unit is connected with a
compressed air energy storage
station, and the two ends of the hose are connected with supports. The side face of the support is connected with the hose through the connecting
flange and the sealing
assembly, the bottom of the support and the balance weight assembly are fixed through bolts, the hose is a
composite material high-pressure-resistant collapsible hose, and the hose is integrally formed by multiple
layers of composite materials, has the large-
diameter high-pressure-resistant characteristic and also has the characteristic that the hose uniformly collapses in the radial direction under the effect of
deep water pressure. Through the superimposed effect of the composite high-pressure-resistant hose and the
water depth pressure,
underwater energy storage of ultra-
deep water pressure with higher
energy density is achieved, compared with a conventional device, the
energy density is increased by 2-3 times, and under the same energy storage capacity, the volume of the hose can be reduced by 50% or above.