Internal plugging device of pipeline

Abstract

The invention provides an internal plugging device of a pipeline. The internal plugging device comprises a central pipe. A guide cone is arranged at one end of the central pipe. A hydraulic drive sluice valve is arranged at the other end of the central pipe. A connection flange, a first lifting lug, a flange connection disk, a hydraulic cylinder, an execution sleeve, a flat key, a second lifting lug, a deblocking ring, an anchoring device, a shearing semi-ring, a sealing device, a shear-resistant semi-ring and the guide cone are sequentially arranged on a pipe body of the central pipe from the end where the hydraulic drive sluice valve is arranged to the end where the guide cone is arranged. The first lifting lug and the second lifting lug are connected with an assistance mechanism respectively. The internal plugging device can be used for blocking a large-diameter pipeline, is reasonable in structural design and easy and convenient to operate, and can guarantee stability and reliability of blocking.

Description

technical field [0001] The invention relates to underwater pipeline sealing equipment, in particular to an in-pipeline sealing device used for sealing land and sea oil pipelines. Background technique [0002] Offshore oil occupies a very important position in the entire oil industry. With the development of the offshore oil industry, there are more and more submarine pipelines. Submarine pipelines are an efficient, economical and reliable means of offshore oil and gas transportation, and are the lifeline for the development of offshore oil and gas resources. The subsea pipeline system includes all components of the steel pipeline system engineering facilities used to transport oil or natural gas, such as subsea oil and gas pipelines, risers, pipeline accessories, and subsea devices connected to them. Although with the continuous development of marine resource exploration technology, the design and construction methods of submarine structures have been continuously improved,...

AI Technical Summary

Problems solved by technology

Although with the continuous development of marine resource exploration technology, the design and construction methods of submarine structures have been continuously improved, and the protective measures have been continuously improved. However, due to the high complexity of the marine environment and the objective existence of many uncertain factors, the damage and destruction is inevitable

[0003] On April 20, 2010, the "Deepwater Horizon" drilling platform rented by BP exploded and caught fire in the Gulf of Mexico, and then sank to the bottom of the sea, causing a large amount of crude oil to leak

The oil spill in the Gulf of Mexico has caused great losses to the U.S. economy and severely damaged the ecological environment of the Gulf of Mexico and the coast

[0004] If the damage of the submarine pipeline is not dealt with and repaired in time, it may cause heavy losses and accidents

This not only affects the normal production and safe operation of offshore oil and gas fields, but also brings economic losses to enterprises and the country. More seriously, it may cause environmental pollution and ecological damage, leading to major production accidents

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