Bolt pretensioner for clamp connectors

Abstract

The invention relates to a bolt pretensioner for clamp connectors, comprising a housing system, a reduction system and a tightening system and characterized in that the reduction system is mounted inthe housing system and is connected with the tightening system through keys, and bolts are fitly mounted in the tightening system. According to the operating principle of the bolt pretentioner, a hydraulic motor rotates and drives a small gear to rotate, the small gear drives a reduction gear to rotate, the reduction gear drives a transmission gear to rotate, the transmission gear drives a tightening socket to rotate, the tightening socket drives a bolt to rotate, and simultaneous pretensioning of multiple bolts is achieved. Compared with the prior art, the bolt pretensioner can provide rapidbolt pretensioning for submarine clamp connectors so that underwater auxiliary connection takes less time, submarine pipelines are quickly repaired and connected, submarine pipeline repair cycle is shortened, and integrated cost of marine oil-gas delivery is decreased.

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 device for clamp connectors. 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 important tasks...

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

Images