Deep sea equipment with mesh bag limiting device

Abstract

The invention discloses a deep sea equipment with a mesh bag limiting device, in the field of deep-sea technology, the deep sea equipment is provided with a mesh bag limiting device in a conventionalpressure-resistant shell and a frame assembled connection structure, A mesh bag limit device is sleeved on an end part of one side of a pressure-resistant case through a mounting base and fixed on a frame, A mesh bag in a mesh bag limit device is wrapped on an outer surface of an end portion of a pressure-resistant shell and has a pre-tightening force, When the pressure-resistant shell shrinks anddeforms, The mesh bag is relaxed and still closely adhered to the outer surface of the pressure-resistant shell, so that the mesh bag can always provide an effective limit for the assembled connection between the pressure-resistant shell and the frame, prevent the pressure-resistant shell and the frame from producing large relative displacement, thereby improving the safety of the deep-sea equipment, and has simple structure, close adherence to the pressure-resistant shell, small occupying space, convenient installation, and reliable operation.

Description

technical field [0001] The invention relates to the field of deep-sea technology, in particular to deep-sea equipment with a net bag limiting device. Background technique [0002] The main components of deep-sea equipment include pressure hulls and frames. Pressure hulls are mainly used to overcome seawater pressure and provide personnel and equipment with a normal pressure working environment; frames are mainly used as the connection and installation basis for pressure hulls and instruments. It provides support for external equipment such as buoyancy blocks and light shells, and is also the main load-bearing structure for deep-sea equipment when it is hoisted and sinks on the seabed. At present, there are two main connection methods between the pressure shell and the frame: welding type and assembly type. The welded type refers to welding the frame to the outer ribs of the pressure hull, and the assembled type refers to the assembly and connection of the frame to the outer...

AI Technical Summary

Problems solved by technology

[0003] Deep-sea equipment will be subject to huge seawater pressure during deep-sea work, and the pressure hull will undergo shrinkage deformation, including shrinkage deformation along the longitudinal and radial two degrees of freedom of the pressure hull, but the frame will not produce shrinkage deformation , at this time, there will be a phenomenon of incongruous deformation between the pressure shell and the frame

When the welded connection is adopted, the deformation inconsistency between the pressure hull and the frame will generate a large stress at the weld of the two, which will cause serious harm to the safety of the entire deep-sea equipment

When the assembled connection is used, the deformation difference between the pressure shell and the frame can be compensated by the deformation of the fastener to eliminate the deformation inconsistency between the two, but the deformation of the fastener itself will occur in a certain If the relative movement between the pressure shell and the frame is released to a certain extent, it may cause a relatively large relative displacement between the pressure shell and the frame under unexpected circumstances such as impact and collision, resulting in the separation of the two, which will bring major accidents to deep-sea equipment.

It can be seen from the above that no matter what connection method is used between the pressure shell and the frame, there will be relatively large safety hazards

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