Underwater pipe connecting device

Abstract

The invention relates to a underwater pipe connecting device. The underwater pipe connecting device consists of a shell system, holding systems and a sealing system, and is characterized in that the shell consists of a left shell system and a right shell system; and the left shell system and the right shell system are symmetrical in structure. The sealing system is mounted between the left shell system and the right shell system; and the holding systems are respectively mounted on the inner surfaces of the left shell system and the right shell system. The underwater pipe connecting device hasthe following working principles: a nut is screwed to enable a stud to push a movable flange to axially move; the movable flange axially moves to enable a holding ring to radially shrink, so that a sealing ring and a metal sealing ring are pressed to deform; the holding ring radially shrinks to enable the holding ring to hold a pipe; and the sealing ring and metal are pressed to deform so as to seal oil in the pipe. Compared with the prior art, the underwater pipe connecting device can realize quick connection and repair of seabed pipes, shortens the repair period of the seabed pipes, relievesthe labor intensity, and reduces the comprehensive cost of marine oil conveying.

Description

Technical field [0001] The invention relates to the technical field of emergency repair equipment for petroleum and natural gas submarine pipelines, in particular to an underwater pipeline connection device. Background technique [0002] With the shortage of land oil and gas resources, coastal countries around the world have successively explored and exploited marine oil and gas resources, and the exploration and exploitation of marine oil and gas resources has gradually become the main trend of the development of the oil and gas industry at home and abroad. In addition, as my country's economy continues to grow rapidly, insufficient supply of oil and gas resources will become the main contradiction hindering economic development. In order to increase the amount of oil and gas resources, the exploration and exploitation of marine oil and gas has become a strategic focus for my country to achieve sustainable energy development. [0003] Submarine pipelines undertake important tasks ...

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.

In addition, at present, the equipment for subsea pipeline section replacement at home and abroad is mainly based on connectors. For example, patent number CN201620156196.8 discloses a new type of submarine pipeline connector, and patent number CN201510054118.7 discloses a submarine pipeline clamp repair connector. , Patent No. CN201621328659.0 discloses a submarine pipeline plugging device and a split submarine pipeline plugging fixture, patent No. CN201610319504.9 is an adjustable and deflected submarine pipeline quick repair connection device, and the structure of the above-mentioned device is complicated, and the processing and manufacturing more expensive

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