A method for installing a side-connected high-pressure escape cabin in a lifeboat

Abstract

The invention discloses a method for installing a side connection type high-pressure escape cabin in a lifeboat, and relates to the technical field of saturated diving safety lifesaving. A high-pressure escape cabin is installed in the lifeboat in a side connection mode, and the method comprises the steps that a boat body side butt joint connector flange and an escape cabin tool are manufactured,and a boat bottom structure of the lifeboat is manufactured; a boat bottom keel frame for placing the lifeboat is in a horizontal state; an installation position of the high-pressure escape cabin is determined through an escape cabin tool and marked, the keel frame, a lower outer shell of the boat body, a bow hook base, a cabin wall and a broadside internal structure are fixed, after the structures are solidified, a lower inner shell is hoisted into the lower outer shell of the boat body to be pre-folded, then the lower inner shell is hoisted out, an impregnated felt is laid, and then the lower inner shell is hoisted into the lower outer shell to be folded; the high-pressure escape cabin is hoisted into the lower inner shell and is installed and fixed by adjusting the position; and a lateral butt joint port is fixed, the upper inner shell and the upper outer shell are installed, a floating body is filled, the upper outer shell and the lower outer shell are pre-folded, a size of a gap is determined, and the impregnated felt is laid to finish folding. According to the method, the strength of the lifeboat is improved, and a sailing resistance is reduced.

Description

technical field [0001] The invention relates to the technical fields of saturation diving safety lifesaving and shipbuilding, in particular to a method for installing a side-connected high-pressure escape cabin in a lifeboat. Background technique [0002] The high-pressure escape boat is an emergency life-saving and evacuation device that integrates a high-pressure escape cabin and a fire-resistant fiberglass lifeboat, and is specially used for divers engaged in saturation diving to escape when they encounter unexpected situations during the decompression process. Because the high-pressure escape cabin needs to withstand high pressure, the cabin body is made of high-strength steel structure, and its weight far exceeds the weight of the FRP lifeboat itself. The strength of the lifeboat, the position of the center of gravity, and the navigation resistance have a great impact. If there is no proper arrangement and installation method, the state, performance, and strength of the...

AI Technical Summary

Problems solved by technology

[0004] The installation of the bottom-connected escape cabin in the lifeboat has great defects, because the docking interface of the escape cabin and the accessories on the interface, the fixed back plate, the fixed bolts, etc. all protrude from the bottom of the boat, and all the protrusions are below the waterline , so when the lifeboat is sailing, it will cause a significant increase in navigation resistance, resulting in the lifeboat having to match 2 to 3 times the power system and fuel system to achieve a speed of 6 knots, which also greatly increases the weight of the whole boat, and the draft of the boat increases. In turn, the sailing resistance of the boat is increased; the bottom fixing bolts penetrate the bottom of the boat and protrude out of the boat. If the boat collides with the mother ship when the boat is lowered, it may cause water to enter the boat and cause the boat to capsize.

In addition, the installation backboard at the bottom is a continuous structure, and the bottom keel, which plays a decisive role in the overall longitudinal strength of the lifeboat, has to be disconnected in many places, which reduces the overall strength of the lifeboat

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