Sealing device for sea pipe leak stopping pipe clamp and sea pipe leak stopper

Abstract

The invention discloses a sealing device for a sea pipe leak stopping pipe clamp and a sea pipe leak stopper. The sealing device comprises two groups of axial sealing assemblies, two groups of radialsealing assemblies, two pistons and driving mechanisms, wherein the two groups of axial sealing assemblies are arranged at the opposite two sides of a plugging region of the sea pipe leak stopping pipe clamp and extend axially, the two groups of radial sealing assemblies are correspondingly arranged at the opposite two ends of the plugging region, the two pistons are arranged at the opposite two ends of the plugging region, and the driving mechanisms are connected with the two pistons; the radial sealing assemblies are correspondingly located between the end parts of the plugging region and the pistons; and the two pistons are driven by the driving mechanisms to move in opposite directions to extrude the radial sealing assemblies, and the radial sealing assemblies are driven to seal a seapipe in a tight holding manner. The sealing device is high in automation degree, simple to operate, safe and reliable; the installation and maintenance process not only can be operated by a diver, butalso can be operated by a remote operated vehicle (ROV), and thereby, the sealing device not only can be used for sea pipe leak stopping pipe clamps in a shallow sea area of which the water depth iswithin 300 m but also can be used for sea pipe leak stopping pipe clamps in a deep sea area of which the water depth is above 300 m, and the problem that the sea pipe leak stopping pipe clamps in thedeep sea area cannot realize rapid and effective sealing is effectively solved.

Description

technical field [0001] The invention relates to the technical field of sea pipe maintenance, in particular to a sea pipe plugging sealing device and sea pipe plugging equipment. Background technique [0002] In recent years, the number of deep-water marine pipelines has been increasing. Due to the long-term design and construction of marine pipelines, marine environment, pipeline corrosion, and changeable media, accidents of deep-water marine pipeline leakage have become more and more frequent. This sudden leakage of deep-water sea pipelines poses a huge threat to oil and gas field production and the marine environment. Once the sea pipeline is damaged, it will cause great losses to the operation of deepwater oil and gas fields. [0003] In order to reduce huge economic losses such as marine environmental pollution and crude oil production shutdown, it is particularly important to repair damaged pipelines safely, quickly and reliably. However, since the maintenance of deep...

AI Technical Summary

Problems solved by technology

The traditional way of underwater construction is difficult, the work efficiency is extremely low, and the practicability is low. The sealing strip is affected by the underwater high pressure and corrosive environment, and the seal is prone to failure.

After installation, it is easy to have risks such as the sealing does not meet the requirements and the sealing test fails

Once a pipeline leaks in a deep-water oil and gas field, it will cause serious marine environmental pollution and huge economic losses. It is urgent to study the emergency plugging and sealing of marine pipelines

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