Device for fixing submarine cable passing through armor plate of seaborne steel building

The utility model discloses a device for fixing a submarine cable passing through an armor plate of a seaborne steel building, which is suitable for various occasions using submarine cables passing through armor plates of seaborne steel buildings. A submarine cable sheath steel wire passing through the armor plate of the seaborne steel building is fixed under a slipping and clamping acting force generated by the self-gravities of a lower conical body and an inner wedged cone and the self-gravity of the submarine cable; then, the lower conical body and an upper conical body are fixed by using fastening bolts; and finally, cable sealant is injected in a cable sealing cavity. Thus, fixing and sealing functions of the submarine cable passing through the armor plate of the seaborne steel building are achieved finally.