A low power consumption maintenance and fail-safe shutdown mechanism for an underwater gate valve actuator

Abstract

The invention provides a low-power-consumption maintaining and failure safety turnoff mechanism of an underwater gate valve executor. The mechanism is a mechanical locking mechanism based on lever principles and a self-restoring mechanism of a spring and comprises a valve rod capable of linearly moving in a shell, and the valve rod is connected with a gate valve and controls opening and closing of the same through own movement; when the valve rod reaches a stable working position, a motor drives a transmission device (nut screw) so as to push a spring bracket to move; under locking action of a locking bolt, the spring bracket together with is locked, position is maintained unchanged, and the gate valve enters a low-power-consumption maintaining state; the failure safety turnoff process is completed through a resetting spring. A triggering mechanism is a compressed spring, and electric-control triggering can be realized; when an electromagnet is powered off, an auxiliary spring rests, a locking column slides into a locking groove, the resetting spring in the shell drives the valve rod to move, and the gate valve enters a safety turnoff state.

Description

technical field [0001] The invention relates to an underwater gate valve actuator, in particular to a low power consumption maintenance and fail-safe shutdown mechanism of the underwater gate valve actuator, which belongs to the field of offshore oil engineering. Background technique [0002] With the development of offshore oil gradually moving towards the deep sea, the state has strengthened its support for the research and development of offshore oil equipment. The research and development of underwater production systems and related equipment has become a hot spot in the research of offshore oil development equipment. At present, many domestic companies have begun to focus on research and development of underwater equipment. Most of the underwater production systems operate at high pressure, and the general pressure is several MPa to hundreds of MPa. The underwater gate valve actuator is the driving device used to control the opening and closing of deepwater gate valve...

AI Technical Summary

Problems solved by technology

It is basically impossible to realize the fail-safe automatic shutdown function of underwater gate valves

[0005] At present, all-electric underwater valves are completely driven by electricity, and the motor consumes a lot of energy when opening the valve and keeping it open, while the underwater valve is always open under normal working conditions, which causes a lot of Energy is wasted, so the low power consumption state maintenance technology is particularly critical when the valve is open

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