Elastic energy storage sealing valve seat

The utility model discloses an elastic energy storage sealing valve seat. A soft seal floating ball valve is provided with a valve body, a valve cover, a spherical valve core and a valve seat, wherein the valve seat is fixed between a flow channel hole of the valve body and the spherical valve core; the valve seat comprises a nonmetal polymeric material sealing ring and a V-shaped metal ring; and the V-shaped metal ring is embedded into a V-shaped groove in the nonmetal polymeric material sealing ring. The elastic energy storage sealing valve seat has good elastic deformation, and meets the necessary specific pressure needed by sealing and the allowable specific pressure of the material, thus guaranteeing the condition that the valve reaches the sealing requirement of 'zero leakage'; and after the structure is adopted, the valve seat also guarantees the sealing requirement of 'zero leakage' at ultralow temperature, the torque of the elastic energy storage sealing valve seat is reduced by 25% compared with the that of the conventional ball valve, and the service life of the elastic energy storage sealing valve seat is doubled compared with that of the soft seal valve seat ball valve with the conventional structure.