A deep sea annular pressure vessel and its manufacturing method

Abstract

The invention relates to a deep-sea annular pressure vessel and a manufacturing method thereof. The annular pressure vessel includes several pressure vessel bodies, which are sequentially connected and spliced ​​to form a closed ring structure. The aforementioned pressure vessel bodies are spindle-shaped. ; On the closed ring structure formed by the connection of several pressure-resistant shell bodies, a number of annular toolings are evenly sleeved; an empty groove is opened on the surface of one of the pressure-resistant shell bodies, and a hatch is covered on the empty groove, and the hatch and the pressure-resistant shell The body is hinged; the ring-shaped pressure-resistant shell of the present invention has better pressure resistance, reduces manufacturing difficulty, and ensures better mechanical properties of the shell.

Description

technical field [0001] The invention relates to a deep-sea annular pressure-resistant shell and a manufacturing method thereof, belonging to the field of submersibles. Background technique [0002] With the continuous research in the shallow sea field, there is less and less space left for us to explore, and the corresponding exploration of the deep sea is particularly important. The needs of the work and the normal operation of the equipment. At the same time, the pressure-resistant shell is a thin shell structure that withstands hydrostatic pressure. It is required to have good mechanical properties, space utilization in the shell, and meet the requirements of ergonomics. [0003] A traditional pressure chamber, usually such as a deep-sea bionic pressure-resistant shell disclosed in Application No. 201510073803.4, consists of a left-end head, a right-end head, and a middle shell to form a length L, a width B, and a radius of rotation R( The axisymmetric eggshell structure...

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Problems solved by technology

[0003] A traditional pressure chamber, usually such as a deep-sea bionic pressure-resistant shell disclosed in Application No. 201510073803.4, consists of a left-end head, a right-end head, and a middle shell to form a length L, a width B, and a radius of rotation R( The axisymmetric eggshell structure of x), wherein, the thickness t2 of the middle shell is an equal-strength thickening structure, the thickness t1 of the left end head and the thickness t3 of the right end head are respectively equal thickness structures, and the The left end head is fixedly connected to the middle shell, and the right end head is connected to the middle shell through flange bolts or movable hatch covers with sealing rings; however, its curvature is small and its compressive performance is average. Ribs are added to the surface of the pressure shell to increase the compressive strength, but the welding between the ribs and the annular pressure shell is likely to cause deformation of the pressure shell, resulting in a decrease in manufacturing accuracy, and in addition, the mechanical properties of the material will not be changed during the production process. It has been fully utilized. In summary, the current known pressure shell technology is generally formed by molding. The outer contour is mostly melon petals or arc surfaces. When welding, it directly leads to large welding residual stress, difficult penetration, low forming accuracy, and mold opening. High cost, long cycle time, high manufacturing difficulty and low surface quality

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