A carbon fiber composite material deep diving pressure chamber and its preparation method

Abstract

The invention discloses a carbon fiber composite deep diving compressive cabin and a preparing method thereof. One end of the compressive cabin is provided with a hemispherical cylindrical shell whichis of an outside-rigid and inside-strong novel cylindrical composite compressive shell structure with the stress tolerance enhanced in the annular and thickness directions, a hemispherical end covershell at the other end of the compressive cabin is independently prepared through the same method, curing and combining are conducted through an RTM combining process by means of thermoset resin, meanwhile the aims of sealing and waterproofing through axial and radial O-rings at end covers are realized, and finally the waterproofing treatment is conducted on the surface of the compressive cabin. According to the preparing method with the carbon fiber three-dimensional stereoscopic woven structural design and the RMT combining process, the underwater stability is improved when the minimum structural weight is ensured, and the high-compression-strength use conditions of the compressive cabin are met; compared with compressive cabins tolerable in the same seawater depth of other materials andstructures, the mass is remarkably reduced, the drainage ratio is increased, more effective loads can be provided, and more advantages are realized.

Description

technical field [0001] The invention relates to the preparation of a deep diving pressure chamber, in particular to a carbon fiber composite material deep diving pressure chamber and a preparation method thereof, belonging to the field of equipment materials. Background technique [0002] In order to meet the needs of various deep-sea operations, underwater gliders are trending towards the development direction of large diving depth, long range and high speed. Among them, the pressure tank is its core component, and it is necessary to ensure the strength and stability of the structure under water exceeding 3000 meters (> 30MPa), without cracks, collapse or fracture failure; displacement ratio) to improve its effective load-carrying efficiency. [0003] The structural materials of the pressure chamber of the traditional underwater glider are mainly light alloy materials. However, with the increase of the working depth, the selection of metal materials as the pressure cha...

AI Technical Summary

Problems solved by technology

[0005] For the underwater glider pressure chamber, it is generally necessary to withstand external pressure greater than 30MPa. If the pressure resistance performance is improved only by increasing the thickness, it is easy to cause the mass / displacement ratio to be unsatisfactory, and the low buoyancy coefficient of the composite pressure chamber cannot be fully utilized. Advantage

Importantly, in the deep water environment, the loads on the inner and outer layers of the pressure cabin are different, and the traditional uniform three-dimensional braided structure cannot meet the requirements of the deep water pressure cabin.

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