Marine riser tensioning ring with automatic locking function

Abstract

The invention discloses a marine riser tensioning ring with an automatic locking function. The tensioning ring comprises a tensioning ring male body and a tensioning ring female body which are matched. The two sides of the tensioning ring male body and the tensioning ring female body are provided with a male body butt plate and a female body butt plate which are matched, a guiding pin shaft and alocking pin shaft are arranged on the side wall of the male body butt plate, and a groove is formed in the rear portion where the front end of the locking pin shaft is placed into the section; a guiding pin hole matched with the guiding pin shaft and a locking pin hole matched with the locking pin shaft are formed in the female body butt plate, a locking arm is horizontally arranged above the locking pin hole, the two ends of the locking arm are movably hinged to the female body butt plate through pin shafts, and a long-strip-shaped vertical limiting groove is formed in the side, close to thelocking pin shaft, of the locking arm. The tensioning ring is of a pure mechanical structure, locking and separation of the tensioning ring male body and the tensioning ring female body are achieved through locking and separation of the locking arm and the locking pin shaft, no close contact of workers is needed, and potential safety hazards are eliminated.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling equipment, in particular to a water riser tension ring with an automatic locking function. Background technique [0002] The direct-acting offshore drilling riser tensioning system (DAT) is mainly used for floating offshore drilling platforms (ships). Usually, when the drilling is stopped or towed, the tension ring male body and the parent body suspended from the lower part of the hydraulic cylinder will follow the liquid The cylinders are locked in designated positions on both sides of the moon pool. When the riser tensioning system is required to perform the heave compensation operation on the underwater riser, it is necessary to combine and lock the male body and the female body of the tensioning ring. [0003] In the prior art, when the male body and the female body of the tensioning ring are centered under the push of the hydraulic cylinder, manpower is required to approach the eq...

AI Technical Summary

Problems solved by technology

Under the influence of wind and waves, the swing range of the tensioning cylinder and tensioning ring will increase, making the operation more difficult and easily endangering the safety of on-site operators

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