Rapid pipeline connecting flange

Abstract

The invention relates to a rapid pipeline connecting flange. The rapid pipeline connecting flange is composed of a shell, a radial tight holding system, a sealing system and an axial pressing system.The rapid pipeline connecting flange is characterized in that the radial tight holding system is arranged in an inner concave wedge face of the shell; the sealing system is arranged between the shelland the axial pressing system; and the shell and the axial pressing system are in fastened connection through a pull rod bolt. According to the work principle of the rapid pipeline connecting flange,the shell moves in the radial direction so that the radial tight holding system can tightly hold a casing pipe; the shell and the axial pressing system are in fastened connection through a tension bolt, accordingly, a flange end cover tightly presses the end face of the casing pipe, sealing rings are obtained through pressing, and accordingly oil gas is prevented from leaking at the position of the flange end cover. Compared with the prior art, the flange can be rapidly installed for an underwater seabed pipeline, rapid repairing and connecting of the seabed pipeline are achieved, accordingly,the seabed pipeline repairing period is shortened, the labor intensity is relieved, and the ocean oil gas conveying composite cost is reduced.

Description

technical field [0001] The invention relates to the technical field of emergency repair equipment for oil and natural gas submarine pipelines, in particular to a quick-connect flange for pipelines. Background technique [0002] Submarine pipelines undertake important tasks such as the output of underwater oil and gas wells, the transportation of subsea crude oil, natural gas and associated gas media, so the safe and stable operation of submarine pipelines is of great significance to the development and utilization of marine oil and gas resources. Due to the operating conditions of the seabed and the special environment of the surrounding seawater, the submarine pipeline has risks such as fatigue damage, geological disaster damage, corrosion damage, ship anchor damage, and third-party damage in marine exploration and development. Once a submarine pipeline leaks, it will not only damage the downstream and The normal production and life of end users will be adversely affected, ...

AI Technical Summary

Problems solved by technology

However, the submarine pipeline welding replacement technology has many procedures, high environmental requirements, complex structure, and cannot achieve rapid replacement. Therefore, the replacement efficiency of the pipe section is not high, and the reliability of the connection is not ideal; the submarine pipeline connector technology can solve the above problems, but the disadvantages are The production of key spare parts such as mechanical connectors for repair and its repair equipment and operating procedures have always been in the hands of foreign professional companies, and there are relatively few domestic corresponding equipment and technologies.

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