Abstract: A pressure stabilizing cavum includes multiple PE pipes and a backing plate. The multiple PE pipes are inserted through a longitudinal keel of the ship. Each PE pipe is provided with a first opening. Both two sides of the each PE pipe in the width direction of the first opening are connected to a hull bottom plate of the ship to form a pressure stabilizing cavum. The backing plate is located between the each PE pipe and the hull bottom plate and is sealingly connected to the each PE pipe and the hull bottom plate. The backing plate is provided with a first through hole, and the hull bottom plate is provided with a second through hole communicating with the first through hole, and the pressure stabilizing cavum communicates with the outside of the ship through the first through hole and the second through hole.

Abstract: A ventilation and heat dissipation apparatus of a wind-assisted rotor includes a cylinder (2), a top cover (3), and a rain shielding plate (4). The top cover (3) is disposed at the top of the cylinder (2) and covers the top of the cylinder (2), and the top cover (3) is provided with a manhole (1) communicating with an inner cavity of the cylinder (2). The rain shielding plate (4) is disposed above the manhole (1) and covers the manhole (1), and the rain shielding plate (4) and the top cover (3) are spaced apart to form a heat dissipation gap that communicates with an external atmosphere.