Large-diameter marine air pipe head

Abstract

The invention provides a large-diameter marine air pipe head. The large-diameter marine air pipe head comprises an outer shell (1), a plurality of inner shells (2), an end cover (3), a flange connector (4), floating barrels (5) and sealing covers (6). The end cover (3) is arranged at the top of the outer shell (1), and the flange connector (4) is mounted at the bottom of the outer shell (1). The inner shells (2) are arranged in the outer shell (1). The sealing covers (6) are arranged on the upper sides of the inner shells (2) respectively to form switching cavities (7). The spherical floating barrels (5) are arranged in the switching cavities (7) respectively. A round hole (12) is formed in each sealing cover (6). Each inner shell (2) is in the shape of a barrel with an upward opening. A protective net (9) is mounted on the round hole (12) of each sealing cover (6). A plurality of air inlets (11) formed in the outer shell (1) are communicated with the lower sides of the switching cavities (7) of the respective inner shells (2). The large-diameter marine air pipe head can seal air channels timely and effectively and is economical and durable.

Description

technical field [0001] The invention relates to marine equipment, in particular to a large-diameter marine air pipe head for preventing liquid from flowing into the cabin. Background technique [0002] The air pipe head is mainly used in various ships to keep the ventilation pipe unblocked, and make the air pressure in the cabin close to the atmospheric pressure through ventilation and suction, so as to ensure that the cabin pressure does not exceed its own design pressure. When the hull tilts or encounters wind and waves, water flows into the air inlet, and the buoy in the air pipe head floats quickly under the action of buoyancy and fits the sealing ring to close the ventilation pipe, thereby preventing water from entering the cabin; when the water flows out, The buoy falls to the original position, and the ventilation pipe continues to be unimpeded. [0003] Commonly used air pipe heads are generally in the shape of a cuboid and made of iron materials. They are bulky and...

AI Technical Summary

Problems solved by technology

[0003] Commonly used air pipe heads are generally in the shape of a cuboid, made of iron material, large in size and weight, difficult to carry, and will increase the weight of the ship

The buoy is usually in the shape of a metal floating cake. With the inflow and outflow of water, the buoy floats and falls from time to time, and often collides with the sealing cover or the bottom of the switching chamber, which is prone to cracks

In order to make the buoy and the sealing ring fit accurately, there is usually a positioning device in the air pipe head, which is complicated in structure and inconvenient to maintain. When the positioning device is rusted or fails, it will affect the timely floating of the buoy, so that the ventilation channel cannot be closed in time

The protective net of the air pipe head is usually set outside the air pipe head, which is easily entangled by seaweed and damaged by seabirds

For the large-diameter air pipe head, when water enters the air inlet, due to the large diameter of the air pipe head, the water surface rises slowly, and the buoy cannot float quickly to fit the sealing ring. easy flow into the cabin

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