Gravity compressed air energy storage system

A gravity compressed air energy storage system, comprising:

• a shaft, into which a pressure-bearing cylinder is movably inserted;
• a sealing component, through which an outer wall of the pressure-bearing cylinder is sealed and connected to an inner wall of the shaft;
• a locking component arranged at a top of the pressure-bearing cylinder to support the pressure-bearing cylinder on a ground at a top of the shaft through the locking component in case that the pressure-bearing cylinder is at a lowest limit position;
• a primary gravity block arranged above the locking component;
• a spherical connection component arranged and spherically connected between the primary gravity block and the locking component, and comprising:
• a spherical support seat arranged at a bottom of the primary gravity block;
• and
• a spherical transition support block arranged on the locking component;
• wherein a bottom of the spherical support seat is provided with an inner spherical groove, and a surface of the spherical transition support block has an outer spherical structure adapted to the inner spherical groove;
• an annular locking platform arranged on a bottom edge of the spherical support seat, so that the spherical transition support block and the locking component are located inside the annular locking platform in case that the annular locking platform is supported on the ground, and the spherical transition support block and the spherical support seat are in a separated state and define a gap therebetween after hoisting is completed;
• and
• a plurality of guide rails arranged on the ground and at a peripheral side of the primary gravity block;
• wherein a plurality of guide components are arranged around the primary gravity block, and the plurality of guide rails cooperate with the plurality of guide components to limit a position of the primary gravity block through the plurality of guide rails.