Reinforcing structure and sealing method for perforated cylindrical composite pressure-resistant shell

Abstract

The invention discloses a reinforcing structure and a sealing method for a perforated cylindrical composite pressure-resistant shell of an underwater vehicle. The reinforcing structure comprises a sleeve, a spherical end socket and a reinforcing structure. The composite material shell and the reinforcing structure are bonded together in a glue joint mode. A groove is formed in the arc surface of the reinforcing structure, and the glue injection opening is formed in the sleeve, so that an adhesive can be in full contact with an adhesive surface. According to the reinforcing structure, not only can the strength of the opening be ensured, but also the sealing performance of the opening can be ensured, particularly, the reliability of the opening structure can be ensured when the opening structure is subjected to static water external pressure, and the sealing structure can be widely used for sealing the composite material opening structure for bearing the static water pressure.

Description

technical field [0001] The invention belongs to the technical field of fiber composite materials, and in particular relates to a reinforcement structure and a sealing method for a perforated cylindrical composite material pressure-resistant shell. Background technique [0002] The weight of an underwater vehicle has always been one of the important indicators restricting the overall performance of the vehicle. In order to improve the endurance and carrying capacity of the aircraft, it is necessary to try to reduce the weight of the aircraft on the premise of ensuring the safety of the aircraft. At present, the materials used to construct underwater vehicles are mainly steel, aluminum alloy, and titanium alloy. However, as the voyage depth increases, these materials can no longer achieve the purpose of reducing the weight of the aircraft. In recent years, with the rapid development of composite materials and their advantages of high specific strength and high specific modul...

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Problems solved by technology

[0003] However, there is another big disadvantage in composite materials: when its fibers are discontinuous, its mechanical properties will be greatly reduced, and the structure is easily damaged at the discontinuity of the fiber material.

According to the description of this patent, it can be seen that when sealing the open-hole composite material head, a plug with a sealing ring is directly inserted into the hole, and then an adhesive is injected to bond the head and the plug together , that is, the sealing of the open-hole composite head is completed, and the entire sealing process does not consider the reinforcement of the structure at the opening

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