The arc-shaped rotating support mechanism of the drill pipe magazine of the subsea drilling rig stored in a horizontal manner

Abstract

The invention discloses an arc-shaped rotating and supporting mechanism of a drill pipe library of a seabed drilling rig stored in a horizontal lying mode. The arc-shaped rotating and supporting mechanism comprises a frame, n circular separating discs with pipe storage grooves and n arc-shaped supporting frames, wherein n is an integer larger than or equal to 2, and the n arc-shaped supporting frames are fixedly mounted on a back sliding rail of the frame and are arranged parallelly and coaxially; the n separating discs are supported on the n arc-shaped support frames correspondingly, and thearc-shaped support surfaces of the arc-shaped support frames are in contact with the arc surfaces of the edges of the corresponding separating discs; and the separating discs are used for forming a rotatable auxiliary support for the whole drill pipe library and drill pipes stored thereon. According to the arc-shaped rotating and supporting mechanism, the arc-shaped support frames are used for rotating and supporting the circular separating discs with the pipe storage grooves in the drill pipe library, so that the problems that the rotation cannot be realized due to the bending deformation easily caused by the fact that the drill pipe library is large in weight and long in length, and a main shaft and bearings at two ends of the main shaft of the drill pipe library are small are solved; and the arc-shaped rotating and supporting mechanism has the advantages of being simple and compact in structure, convenient to control, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of subsea drilling rigs, and in particular relates to an arc-shaped rotating support mechanism for a subsea drilling rig drill pipe magazine stored in a horizontal manner. Background technique [0002] The subsea drilling rig is an important equipment for seabed mineral resource exploration, submarine engineering geological survey and marine scientific research. It is lowered to the seabed by carrying the retractable winch equipped on the mother ship. Drilling and sampling of seabed formations can be carried out, and the drilling depth of seabed formations can be increased by continuously adding drill pipes. After the subsea drilling and sampling operation is finished, the subsea drilling rig is recovered to the deck of the mother ship by using the retractable winch. In order to meet the drilling and sampling requirements of deep seabed formations, the subsea drilling rig needs to be equipped with a drill p...

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Problems solved by technology

[0003] However, when the subsea drilling rig is stored (stabilized) on the deck of the mother ship in a horizontal manner, the drill pipe magazine on the submarine drilling rig also becomes a horizontal lying mode. The bearings at both ends of the shaft and the main shaft are designed to be very small. When the same heavy and long drill pipes are installed in the drill pipe magazine, the drill pipe magazine becomes very heavy. In the horizontal state of the drill pipe magazine, if there is no auxiliary support device, it is very easy to cause the drill pipe magazine to be bent and deformed and unable to rotate

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