Pipeline joint

Abstract

The invention discloses a joint which is used for connecting a rigid pipe and a flexible pipe and has strong capability of bearing ocean current impact. In the joint, a reducing joint and a butt joint are abutted into a whole; a spherical connector is a hollow sphere with two ends being cut, and a flange disc is welded on the outer wall of the cut at one end of the spherical connector; a spherical joint is a hollows sphere with two ends being cut, and one end of the spherical joint is welded with a connecting pipe; a through connection disc is welded on the outer wall of the connecting pipe, and a baffle plate penetrates through the connecting pipe to be connected with the through connection disc into a whole; the spherical outer wall of the spherical joint and the spherical inner wall of the spherical connector are mated movably and concentrically; and a spring is sheathed on the connecting pipe, and two ends of the spring are respectively matched with the spherical connector and the baffle plate. In the joint, as thrust is applied between the spherical connector and the spherical joint by the spring, the tight and movable cooperation between the spherical connector and the spherical joint is forced to be kept, thereby achieving the aims of preventing oil leakage and gas leakage, absorbing the energy of the ocean current compact, and preventing the pipeline from being damaged.

Description

technical field [0001] The invention relates to a pipe joint. Background technique [0002] my country's oil and gas pipelines mainly include crude oil pipelines, refined oil pipelines, natural gas pipelines, etc. At present, these marine pipelines running through my country's offshore are mainly made of rigid pipes made of metal materials. Due to the high rigidity and high quality of the rigid pipe, it is very difficult to lay the pipe. Each laying will take a long time, and the cost of the installation ship running for one day is very high, which consumes huge resources. Due to the high hardness and high metal activity of rigid pipes, they are susceptible to rapid corrosion by seawater on the seabed, and their service life is affected. Therefore, countries all over the world are committed to the research of flexible pipes to make the laying of submarine pipelines easier. At present, there have been reports on the application of flexible pipes in deep seas, but rigid pipe...

AI Technical Summary

Problems solved by technology

Due to the large fluctuations of the seabed water flow, a large impact will be caused at the joint between the rigid pipe and the flexible pipe, resulting in a large deformation, and in severe cases, the pipeline will be damaged and there will be oil leakage or air leakage.

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