A sandwich composite pressure hull for submersibles

Abstract

The invention discloses a sandwich composite pressure-resistant shell used for a submersible and belongs to the field of pressure-resistant shells of submersibles. The sandwich composite pressure-resistant shell comprises a plurality of annular cabin sections, a plurality of pressure-resistant ring ribs and a plurality of sealing parts. Each cabin section comprises an inner shell, an outer shell and a sandwich layer arranged between the inner shell and the outer shell. The end openings of the two ends of each cabin section are in a groove shape, and the outer shell and the inner shell of each cabin section are connected into a whole in the positions of the end openings. Each pressure-resistant ring rib is in a disc shape integrally and comprises a ring wall arranged on the periphery and rib walls which are also arranged on the periphery and are perpendicular to the ring wall. Each ring wall is pasted in the position of the corresponding end opening, and each rib wall is pasted to the inner shell in the position of the corresponding end opening. Disc parts of the pressure-resistant ring ribs in the positions of the end openings of each cabin section are closely attached to each other and fixed to each other so that the cabin sections can be connected into a whole. Each sealing part is arranged in an annular groove formed after the two corresponding groove-shaped end openings are in butt joint, the middle of each sealing part is thick, and the two sides of the sealing part are thin. The sealing parts are used for connecting the cabin sections, so that the outer wall of the multiple connected cabin sections is flat. Connection at the end openings of the pressure-resistant shell is firm and stable, and the water tightness is good.

Description

Technical field [0001] The invention belongs to the field of pressure-resistant shells of large-size submersibles, and more specifically, relates to a pressure-resistant shell of large-size submersibles with ingenious port design and easy connection. Background technique [0002] Composite materials have mechanical properties of high specific strength and high specific stiffness, and have excellent performance as large-size structural materials. However, large-size composite material structures need to have a larger thickness to maintain the stability of the structure. Sandwich composite materials solve this problem well. [0003] Sandwich composite material is a composite material structure widely used in the ship and aircraft manufacturing industries in the past 20 years. It is generally composed of a stronger and thinner surface layer and a thicker core material. Compared with the composite single-layer structure of the same strength, the sandwich composite structure has highe...

AI Technical Summary

Problems solved by technology

However, for large-scale composite sandwich structures, integrated molding technology cannot be used, so there is a problem of seams

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