A self-locking Christmas tree torsion auxiliary tool

Abstract

The invention discloses a self-locking type oil recovery tree torsion auxiliary tool comprising a body. An internal spline transmission shaft is mounted in the body; a round magnetic grid is mounted on the internal spline transmission shaft; one end of the round magnetic grid is connected with a connector; the connector is fixedly connected with the body through a plastic resin connecting head; hinge seats are mounted on the two sides of the body correspondingly; piston cylinders are hinged to the hinge seats, and piston rods are mounted in the piston cylinders; limiting pins are mounted on the piston rods; the limiting pins are located in a shell body; a buckle is mounted in the shell body, and the buckle is hinged in the shell body through a rotating shaft; torsion springs are mounted on the rotating shaft; one end of the buckle makes contact with the piston rods; and rotation of the buckle is driven by movement of the piston rods, and self-locking is realized. The self-locking type oil recovery tree torsion auxiliary tool is provided with a build-in mechanical locking device, the situation that safe working can be conducted when all auxiliary devices are directly omitted after abutting can be realized through a self-locking wing, and the performance requirement of an underwater robot is reduced, so that a common underwater robot can complete opening / closing motion of an underwater oil recovery tree valve.

Description

technical field [0001] The invention relates to a self-locking Christmas tree torsion auxiliary tool, which belongs to the technical field of offshore oil production. Background technique [0002] The subsea Christmas tree is a wellhead control device for testing oil and gas after the completion of an oil (gas) well, or when producing oil from a gushing well. There are valves on the Christmas tree, which are used to control and adjust the production of oil wells, as well as routine maintenance and wax removal. In order to control the valves on the Christmas tree, a robot is usually used to carry a twisting tool and move along the oil production pipeline to a platform specially set up for the robot to work next to the Christmas tree. After the robot is positioned and fixed on the platform, the twisting tool is fixed to the valve. On the seat, that is, the robot first inserts the tooth groove of the torsion tool interface into the valve seat, and then completes the fixing of ...

AI Technical Summary

Problems solved by technology

[0004] (1) A ROV robot with a twisting tool not only needs to move the tool along the axis, but also requires the robot to always provide a certain axial fixing force to fix it on the Christmas tree, and the centering is too difficult to achieve fast docking , causing the entire assembly process to take too much time, and there is no strict angle control, which will cause too much damage to the tool during the assembly process

[0005] (2) A ROV robot with a twisting tool to move the tool along the axis, and then use a hydraulic drive to fix the tool on the tree body, but it is not mechanically self-locking, and the reliability is not high

Although the internal angle measuring instrument can read the specific rotation angle on the external display screen, it is also unable to realize the convenience of docking at the beginning. It is necessary to adjust the angle of the interface in advance, which is too difficult for ROV. , and it takes too long

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