Hydraulic underwater pipe connector

Abstract

The hydraulic underwater pipeline connector includes upper and lower connecting flanges. After the two are connected to each other, the middle hole of the pipeline is closed. The upper connecting flange is fixedly connected with the hydraulic cylinder. Constitutes the upper and lower chambers, which can be locked or released by the piston. The teeth of the upper and lower connecting flanges are distributed outside the piston. The pull rod is fixed on the piston, and the other end passes through the upper connecting flange to connect the pull ring. A guide ring is fixedly arranged in the middle hole of the flange, and the guide ring is longer than the lower end surface of the upper connecting flange, an inclined surface is arranged on the inner wall of the middle hole of the lower connecting flange, and a sealing steel ring is arranged on the outer wall of the guide ring. The guide ring provided in the present invention plays a role of centering and guiding, so that the upper and lower connecting flanges can be connected in place at one time, avoiding bumping. The pressure increase and release are carried out on each working oil pipe interface respectively, which can realize the locking and release of the connecting flange. The piston pull-up rod can identify the opening and closing status of the connector, and is convenient for hoisting, and when the hydraulic power fails, the connector can be opened through the pull rod.

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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