Emergency unlocking mechanism of underwater control module recovery tool

Abstract

The invention relates to an emergency unlocking mechanism of an underwater control module recycling tool. The emergency unlocking mechanism comprises a piston cylinder, a connecting rod, a piston anda pressing sleeve, the piston cylinder comprises an inner core pipe and an outer sleeve which are coaxially arranged and integrally formed, a cavity is reserved between the inner core pipe and the outer sleeve, a closed end is arranged between the lower end of the pipe wall of the outer sleeve and the lower end of the pipe wall of the inner core pipe, a hydraulic connector penetrating through thepipe wall of the outer sleeve is formed in the position, close to the lower end, of the outer sleeve, and the hydraulic connector is used for being connected with a hydraulic source. The connecting rod is arranged in a cavity of the inner core pipe and can perform reciprocating motion along the cavity of the inner core pipe, a pressing cover sleeves the position, close to the upper end, of the connecting rod, the upper end of the connecting rod is fixedly connected with a ROV control handle, and the lower end of the connecting rod is a free end. The piston sleeves the outer wall of the inner core pipe, the upper end of the piston is fixed to the pressing cover, and the piston can be driven by the connecting rod to perform reciprocating motion; and the pressing sleeve is arranged in a gap between the upper end of the outer sleeve and the upper end of the piston. The emergency unlocking mechanism of the underwater control module recycling tool is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to an emergency unlocking mechanism for an underwater control module recovery tool, and belongs to the technical field of underwater oil and gas production. Background technique [0002] The subsea tree control module is installed on the subsea tree. Its main function is to provide subsea tree status monitoring and control of subsea valves. It is one of the key equipment for developing subsea production systems in offshore oil and gas fields. The subsea control module is conventionally designed in a recovery mode that utilizes its recovery tool. The underwater control module has been working in the underwater environment for a long time. After a long period of operation, accidents such as corrosion and marine organism adhesion may occur, making it impossible to use the recovery tool to unlock and recycle the underwater control module normally. The current emergency unlocking mechanism of the control module is complicated to opera...

AI Technical Summary

Problems solved by technology

The underwater control module has been working in the underwater environment for a long time. After a long period of operation, accidents such as corrosion and marine organism adhesion may occur, making it impossible to use the recovery tool to unlock and recycle the underwater control module normally.

The emergency unlocking mechanism of the current control module is complicated to operate and has low reliability

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