Bolt pre-tightening tool for subsea clamp connector

Abstract

The invention relates to a bolt pre-tightening tool for a submarine hoop connector. The tool comprises a casing system, a speed reducing system, a transmission system and a tightening system; the speed reducing system is mounted in a casing and is connected with the upper end of the transmission system through universal joint pins; the lower end of the transmission system is connected with the tightening system through universal joint pins; and the tightening system is mounted in a lower casing. The working principle of the tool is as follows: a hydraulic motor rotates to drive a pinion to rotate, the pinion is decelerated by reduction gears to transfer motion to transmission gears, the transmission gears transfer the rotating motion to transmission shafts, then the transmission shafts transfer the rotating motion to tightening sleeves, finally, bolts are driven by the tightening sleeves to rotate, and then the purpose of tightening the multiple bolts simultaneously is achieved. Compared with the prior art, the tool has the advantages as follows: the bolts can be pre-tightened quickly for the submarine hoop connector, then the underwater auxiliary connecting time can be shortened,quick repair and connection of a submarine pipeline can be realized, the repair cycle of the submarine pipeline can be shortened, and the comprehensive cost for ocean oil and gas transmission can be reduced.

Description

technical field [0001] The invention relates to the technical field of emergency repair equipment for oil and natural gas submarine pipelines, in particular to a bolt pre-tightening tool for a submarine clamp connector. Background technique [0002] With the shortage of land oil and gas resources, the world's coastal countries have successively explored and exploited offshore oil and gas resources, and the exploration and exploitation of offshore 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 possession of oil and gas resources, offshore oil and gas exploration and exploitation have become the strategic focus of my country's sustainable energy development. [0003] Submarine pipelines undertake import...

AI Technical Summary

Problems solved by technology

However, after the clamp connector is lowered into the seabed, it is necessary to use special connecting tools and underwater robots to rotate and pre-tighten the bolts of the clamp, which brings about time-consuming connection and complicated operation process.

Patent No. 2008100643759 announced the bolt insertion and flange alignment device for deep-water flange automatic connection. Patent No. 2008100646615 announced the integrated remote pipeline flange bolt connection machine. Patent No. 2009100724661 announced the bolt library tightening device for deep-sea flange connection. The above tools can only pre-tighten the bolts of flange connectors, but not the bolts of clamp-type connectors

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