Elastic displacement compensating fixed-connection unit and deep sea multi-pressure-body combined type pressure structure

Abstract

The invention discloses an elastic displacement compensating fixed-connection unit and a deep sea multi-pressure-body combined type pressure structure. The elastic displacement compensating fixed-connection unit comprises a circular disc-shaped pre-tightening cover, a locating cylinder section, an elastic element, a displacement compensation element and a sliding coating; the displacement compensation element is mounted at the internal bottom of the locating cylinder section; the sliding coating is plated on the external bottom surface of the displacement compensation element; the elastic element is mounted above the displacement compensation element; and the circular disc-shaped pre-tightening cover is screwed into the upper portion of the locating cylinder section and compresses the elastic element so as to push the displacement compensation element by using the elastic element. According to the elastic displacement compensating fixed-connection unit and the deep sea multi-pressure-body combined type pressure structure, the shrinkage deformation of the deep sea multi-pressure-body combined type pressure structure can be effectively compensated, the influence of deformation incompatibility of multiple pressure structures on a connecting frame can be reduced, the connecting safety and reliability of the combined structure can be effectively enhanced, and the mounting and maintenance are convenient.

Description

technical field [0001] The invention relates to an elastic displacement compensation fixed connection mechanism, in particular to an elastic displacement compensation fixed connection unit and a deep-sea multi-pressure-resistant combined pressure-resistant structure equipped with the elastic displacement compensation fixed connection unit. Background technique [0002] Traditional deep-sea equipment consists of a single pressure-resistant shell and a non-pressure-resistant frame welded to it to form its main structure. As the carrier of payloads such as personnel and electronic equipment, the pressure-resistant structure is in a state of relatively high stress level under huge deep water pressure, resulting in certain shrinkage deformation. With the development of deep-sea equipment to large diving depth and large-scale, the size and thickness of a single pressure-resistant structure will increase, which will bring greater difficulty to manufacture and maintenance. In this c...

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Problems solved by technology

The traditional method is to weld multiple pressure-resistant structures and connecting frames into a whole. The overall continuity of the main structure is relatively good, but there are three adverse effects: the connecting frames will make the pressure-resistant shell subject to additional loads other than hydrostatic pressure, It has an adverse effect on the uniform stress of the pressure-resistant structure; the shrinkage of the pressure-resistant structure causes uneven deformation of the connecting frame, and a large stress is generated locally on the frame; the deformation of the connecting frame causes displacement of the outboard equipment rooted on the frame, and the assembly relationship Changes that prevent the device from functioning properly

Through the strengthening of the relevant parts of the connection, the hard-resistant structural deformation can alleviate some of the adverse effects caused by the welding connection, but at the cost of space and weight, the equipment space inside the deep-sea equipment is reduced, and the operating ability is weakened. At the same time, many welds, greatly reducing the reliability of the main structure

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