Deep water flange automatic connection nut aligning and screwing device

Abstract

The invention provides a device for aligning and screwing nuts used for automatic connection of deepwater flanges. The device consists of a support (1), an opener (2), an orifice regulator (3) and a spanner seat (4), the opener (2) is arranged on the support (1) through an opening positioning shaft (6), the inside of a baffle of the front of the support is provided with two hydraulic cylinders which are used for driving the opener (2), the orifice regulator (3) is arranged on the inside of the opener (2), the orifice regulator is provided with a deflector rod (15), the opener (2) is provided with an orifice regulating hydraulic cylinder (12) matched with the deflection rod (15), the spanner seat (4) is arranged on the orifice regulator (3) through a shaft serving as a lead rail, the orifice regulator (3) is provided with a feeding hydraulic cylinder (17). The device has the advantages of simple structure and high reliability; moreover, the device is suitable for automatic connection of pipe flanges at a depth 3000 meters under water.

Description

(1) Technical field [0001] The invention relates to a nut alignment and tightening device which can be used for automatic connection of deep-water flanges. (2) Background technology [0002] The mechanical connection of deep-water submarine pipelines often adopts automatic flange connection. The simple process of flange automatic connection is to first control the H frame by the ROV (Remotely Operated Vehicle) to support the pipes that need to be connected on the seabed, and then use the aligning tool to achieve the alignment of the pipe's axial and radial positions. , And finally ROV manipulates the flange automatic connection tool to complete the connection of the pipeline flange. The deep-water nut alignment and tightening device of the present invention is a part of the flange automatic connection tool, which can be used to tighten hexagonal head bolts or double-ended studs. It can not only align the nut with the axis of the corresponding bolt, but also realize the screwing o...

AI Technical Summary

Problems solved by technology

[0003] The technical solution in the METHODAND APPARATUS FOR CONNECT-ING UNDERWATER CONDUITS (deep water pipeline connection method and equipment) disclosed in 1998 by Sonsub International Ltd. (Sonsub International Ltd.) is a three-lobe structure, which cannot be rotated to align the holes. Need other auxiliary equipment, so the structure is complex; Allseas Group S.A. (Allseas Group) in 1998 disclosed METHOD AND APPARATUS FOR UNDERWATER CONNECTION OFPIPE PIECES AND BOLT THEREFOR (method and equipment for underwater pipeline bolt connection) in the technical scheme, the bolt storehouse and The nut storehouse is connected as a whole, which is not conducive to transportation and convenient ROV carrying; in REMOTE BOLTED FLANGE CONNECTION APPARATUS AND METHODS OFOPERATION THEREOF (equipment and method for remote bolted flange connection) disclosed in STOLTOFFSHORE LIMITED. (STOLT OFFSHORE LIMITED company) in 2001 The bolt storehouse and the nut storehouse of the technical solution are also connected as a whole, and a manipulator is installed on it to assist in inserting bolts

Its volume is huge and its structure is very complex

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