Deep water flange automatic connection bolt insertion and flange hole aligning device

Abstract

The invention provides a device for inserting bolts and aligning flanges with holes during automatic connection of deepwater flanges. The device comprises a support (1), an opener (2), an opening hydraulic cylinder (3), an orifice regulator (4), a bolt chamber (5), a back shaft (6), a bolt (7), an orifice regulating hydraulic cylinder (8) and a feeding hydraulic cylinder (9), the opener (2) is arranged on the support (1) through the back shaft (6), the opener (2) is provided with the opening hydraulic cylinder (3), the orifice regulating device (4) is arranged in the opener (2), the orifice regulating device (4) is provided with a corbel piece (24), the front part and the rear part of the opener (2) are integrated as a whole through a connecting shaft (11), the opener (2) is provided with the orifice regulating hydraulic cylinder (8) matched with the corbel, the bolt (7) is arranged in the front part of the opener (2), the feeding hydraulic cylinder (9) is arranged in the rear part of the opener (2). The device has the characteristics of simple structure and high reliability, and is suitable for automatic connection of pipe flanges at a depth of 3000 meters under water.

Description

(1) Technical field [0001] The invention relates to a bolt insertion and flange hole alignment device which can be used for deep water flange automatic connection. (2) Background technology [0002] The subsea pipeline tie-back refers to the connection of the pipeline to the underwater equipment, mainly including: the connection between the pipeline and the platform, the connection between the pipeline and the pipeline network, the connection between the pipeline and the standpipe, the connection between the pipelines, etc. For the connection of deep-water submarine pipelines, mechanical flange automatic connection is often used. The simple process of flange automatic connection is that the remote operated vehicle (ROV) first controls the H frame to support the pipes that need to be connected on the seabed, and then the alignment tool realizes the alignment of the axial and radial positions of the pipes Afterwards, the ROV manipulates the automatic flange connection tools, ...

AI Technical Summary

Problems solved by technology

[0003] [1] Giovanni Corbetta, Aberdeen METHOD AND APPARATUS FORCONNECT-ING UNDERWATER CONDUITS, Sonsub International Ltd. 1998; [2] Jacobus Cornelis Wijsman, Rijnsburg METHOD AND APPARATUS FORUNDERWATER CONNECTION OF PIPE PIECES AND BOLT THEREFORA Allseas [19Group] John, Stephen, CAMPING, Michael, WISHART, Graham REMOTE BOLTED FLANGE CONNECTION APPARATUSAND METHODS OF OPERATION THEREOF, STOLT OFFSHORELIMITED. The lobe structure cannot be rotated to align the holes, and other auxiliary equipment is required to complete the alignment, so the structure is complex; the bolt library in document [2] is similar to the bolt library in document [1], for example, both have a three-lobe structure and have bolts preload function

However, in document [2], the bolt storehouse and nut storehouse are connected together, which is not conducive to transportation and inconvenient for ROV to carry; Auxiliary Insertion Bolt

Its volume is huge and its structure is very complex

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