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Layered pressure regulating submersible and manufacturing method thereof

A manufacturing method and technology of submersibles, applied to underwater ships, underwater operating equipment, ships, etc., can solve problems such as low safety factor and reduced fatigue life, so as to increase fatigue life, reduce stress level, and reduce preparation process requirements Effect

Inactive Publication Date: 2016-09-21
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

In addition, the safety factor of the existing pressure shell is low, and the excessively high stress level will greatly reduce the fatigue life

Method used

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  • Layered pressure regulating submersible and manufacturing method thereof
  • Layered pressure regulating submersible and manufacturing method thereof
  • Layered pressure regulating submersible and manufacturing method thereof

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Embodiment Construction

[0019] From the mechanical design point of view, the key mechanical issues of the pressure vessel involve elastic instability and plastic yielding. From the perspective of elastic instability, the lattice material sandwich structure composed of three-dimensional space micro-truss structure has the characteristics of high specific stiffness, specific strength, and multi-functionality, which can effectively improve the buckling resistance of the pressure cabin structure. The structural design of the layered pressure compartment based on interlayer pressure can decompose the ultra-high pressure in the deep sea and share it evenly between the inner and outer shells, significantly reducing the stress level of the shell and improving the plastic yield safety factor of the pressure cabin , thereby effectively increasing the fatigue life. Therefore, the layered partial pressure chamber based on interlayer pressurization has broad development prospects.

[0020] The layered pressure r...

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Abstract

The invention discloses a layered pressure regulating submersible. The layered pressure regulating submersible can lower the requirement for the preparation process of a shell, remarkably reduces the stress level of the shell, and increases the plastic yielding security coefficient of a compressive cabin, thereby effectively prolonging the fatigue life. According to the layered pressure regulating submersible, the pressure outside the submersible is less than or equal to 120 MPa, and the pressure in the submersible is 0.1 MPa. The layered pressure regulating submersible comprises n layers of spherical shells, and n is an integer greater than one. The spherical shells have the same spherical center, and partial pressure objects filled with specified pressure are arranged in spaces between every two adjacent spherical shells. The invention further provided a manufacturing method of the layered pressure regulating submersible.

Description

technical field [0001] The invention belongs to the technical field of structural mechanics and material mechanics, and in particular relates to a layered pressure regulating submersible and a manufacturing method of the layered pressure regulating submersible. Background technique [0002] The structures of the pressure chambers of deep-sea manned submersibles developed in various countries are all single-layer spherical shells, and the material systems mainly include high-strength steel and titanium alloy. At present, the deepest dive is the "Deep Sea Challenger" of the United States, with a dive depth of 10,908 meters. The previous breakthroughs in the pressure chamber of deep-sea manned submersibles were mainly in two aspects: materials and processing accuracy. Taking the "Deep Sea Challenger" as an example, its pressure-resistant shell is made of steel, with an inner diameter of 1.1 meters and a thickness of 0.066 meters. In two tests conducted by the laboratory of Pen...

Claims

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Application Information

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IPC IPC(8): B63G8/00B63C11/36
CPCB63G8/00B63C11/36
Inventor 魏宇杰张吟方新刘小明宋宏伟雷现奇
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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