Hydraulic type submarine pipeline connector

Abstract

A hydraulic type submarine pipeline connector comprises an upper connecting flange and a lower connecting flange; after the upper connecting flange and the lower connecting flange are connected, the central hole of the pipeline is closed; the upper connecting flange is fixedly connected with hydraulic cylinder bodies; an annular piston is arranged inside each cylinder body, an upper cavity and a lower cavity are formed inside the piston; under the influences of the piston, clamping teeth which can lock and release the connection of the upper connecting flange and the lower connecting flange are distributed outside the piston; one end of each pull rod is fixed on to the piston, and the other end of each pull rod penetrates out of a corresponding pull ring of the upper connecting flange; the central hole of the upper connecting flange is fixedly provided with a guide ring which is longer than the lower end surface of the upper connecting flange; an inclined plane is on the inner wall of the central hole of the lower connecting flange; the outer wall of the guide ring is provided with a seal steel ring. The guide ring has a centering and guiding function to enable the connection of the upper connecting flange and the lower connecting flange to be in place at a time and to avoid collision; the locking and release of the connecting flanges can be achieved by respectively increasing pressure and reducing pressure on every connector opening of working oil pipelines. The pull rods on the pistons can recognize the opening and closing condition of the connector and facilitate hoisting, and when failure of hydraulic power occurs, the connector can be opened through the pull rods.

Description

technical field [0001] The invention relates to an underwater oil pipeline connector in the seabed pipeline docking technology in the oil drilling industry, in particular to a hydraulic underwater pipeline connector capable of working normally under high temperature and high pressure. Background technique [0002] Offshore oil and gas fields are very far away from the land, and tens of kilometers or even hundreds of kilometers of oil pipelines need to be laid as a transportation system. Therefore, the connection technology of submarine underwater pipelines has become an important link in offshore oil exploitation. The traditional submarine pipeline connection technology usually adopts flange connection, which is operated by divers underwater. However, due to the limited diving depth of divers, they can only work between 0 and 100 meters underwater. Nowadays, my country's oil industry is getting more and more into the deep sea, and the general water depth is about 400 meters....

AI Technical Summary

Problems solved by technology

Traditional submarine pipeline connection technology usually adopts flange connection, which is operated by divers underwater. However, due to the limited diving depth of divers, they can only work between 0-100 meters underwater

Nowadays, my country's oil industry is getting more and more into the deep sea, and the general water depth is about 400 meters. If the underwater robot is used to replace the diver's work, the flange-type docking method is very complicated and cumbersome for the underwater robot, and it takes a lot of time to debug. Labor hurts money, greatly increasing the cost and construction period of the offshore oil industry

Therefore, the traditional flanged pipe butt joint technology can no longer meet the current needs of deep sea operations.

[0003] In addition, the hydraulic locking pipe connector in the prior art is a vertical pipe connector. Although it is relatively easy to realize the butt joint process of the upper and lower pipes, there will also be bumps, causing the sealing steel ring to be damaged during the lowering process. If it is bruised, it will seriously affect the efficiency of the pipe centering connection and the sealing effect of the connector

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