Wing pendulum marine riser vortex induced vibration self-generation monitoring device

Abstract

The invention discloses a fin type marine vertical tube vortex-excited vibration self power generation monitoring device comprising a housing, a fin, a pressure resistant cabin and an underwater instant plug device. A fixed shaft is arranged in the position of the central axis of the housing; the housing is provided with a plurality of permanent magnets and a corresponded insulation support inside; a plurality of rows of transverse spiral grooves are formed on the axial surface of the housing at equal intervals; the fin comprises a shaft sleeve, a fan-shaped coil box and a plurality of fin pieces, a plurality of groups of coils are arranged on the fan-shaped coil box longitudinally at equal intervals, the central angle of the fan-shaped coil box is provided with the shaft sleeve vertically, and the shaft sleeve is in a hollow cylindrical shape and sleeves the fixed shaft through a twist spring; the fin pieces are rectangular, and one edges of the fin pieces are connected to the arc surface of the fan-shaped coil box vertically; the pressure resistant cabin is installed at the bottom of the housing, and the underwater instant plug device is arranged at the connection of the pressure resistant cabin and housing. The device can be widely applied to marine vertical tube production monitoring.

Description

technical field [0001] The invention relates to a power generation monitoring device, in particular to a wing-swing type ocean riser vortex-induced vibration self-power generation monitoring device. Background technique [0002] With the increase of human demand for energy, people are forced to shift the exploitation of resources from land to sea, so the proportion of offshore platforms in the resource structure is gradually increasing. The current acquisition technology of seabed resources is usually to obtain oil and natural gas from the seabed through drilling, and then transport them to platforms or FPSO, FLNG, etc. through risers for processing and storage. The riser plays a pivotal role in the entire resource mining and processing. As the lifeline of oil and gas transportation, the riser largely guarantees the smooth progress of the entire platform mining and production. Considering that the marine riser is a flexible structure with large deformation, due to the influ...

AI Technical Summary

Problems solved by technology

However, monitoring instruments need power supply, and the data results obtained from monitoring also need to be fed back, so for the monitoring of deep-sea risers, it becomes relatively cumbersome to use cables for power and data transmission

[0003] In the prior art, there is no relevant technical proposal for the vortex-induced vibration power generation of the standpipe. The existing vortex-induced vibration power generation device in China is limited to the up-and-down reciprocating vibration of the straight rod in the ordinary water flow affected by the water flow to generate power, and cannot Meet the urgent needs of riser monitoring

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