Real-time monitoring automatic alarm device for vortex-induced vibration of undersea steel cross-under pipe

Abstract

The invention discloses a real-time monitoring automatic alarm device for vortex-induced vibration of an undersea steel cross-under pipe. The real-time monitoring automatic alarm device is installed on the steel cross-under pipe and includes a shell, an upper electrode plate, a lower electrode plate, a movable electrode plate, a signal acquisition module, a communication module, an alarm control module and a power supply module, wherein the upper electrode plate is fixed to the top of the shell; the lower electrode plate is located on the lower part of the upper electrode plate and fixed to the bottom of the shell; the movable electrode plate is located between the upper electrode plate and the lower electrode plate, and both sides of the movable electrode plate are connected to the shellthrough a pair of springs correspondingly; the signal acquisition module is connected with the upper electrode plate, the lower electrode plate and the movable electrode plate correspondingly; the communication module is connected with the signal acquisition module; the alarm control module is connected with the signal acquisition module; and the power supply module is connected with the signal acquisition module, the alarm control module and the communication module correspondingly. According to the real-time monitoring automatic alarm device for vortex-induced vibration of the undersea steelcross-under pipe, vortex-induced vibration information of undersea ocean current to the steel cross-under pipe can be monitored in real time, automatic alarm is carried out when a safety threshold isexceeded, and important parameters and information for offshore operation personnel to evaluate the service status of the steel cross-under pipe are provided.

Description

technical field [0001] The invention relates to automatic equipment for offshore oil exploitation, in particular to an automatic alarm device for real-time monitoring of vortex-induced vibration of a seabed steel jumper pipe. Background technique [0002] The most important feature of underwater production operations in offshore oil and gas fields is the use of underwater Christmas trees, gathering and transportation manifolds, submarine pipelines and other facilities placed on the seabed. The manifold collects the oil and gas produced by each well, and then transports them to the offshore oil storage facilities or offshore processing plants through large-diameter submarine pipelines. The subsea steel jumper connects the Christmas tree and the manifold, and is a steel pipeline suspended in the water. When the seabed ocean current flows through the jumper pipe, alternating vortices are generated on both sides of the pipe, which causes the pipe to vibrate. The vibration of t...

AI Technical Summary

Problems solved by technology

At present, in engineering design, the stress and fatigue effects that vortex-induced vibration may have on submarine steel crossover pipes are generally determined through theoretical calculation and analysis. Within the level, there is no effective means to directly monitor and automatically alarm

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