Ocean platform vibration absorbing energy feedback device based on nonlinear energy sink

Abstract

The invention provides an ocean platform vibration absorbing energy feedback device based on a nonlinear energy sink and belongs to the field of deepwater marine drilling platforms. The ocean platformvibration absorbing energy feedback device based on the nonlinear energy sink consists of a platform, a swaying-surging nonlinear energy sink and a heaving nonlinear energy sink. The swaying-surgingnonlinear energy sink is mounted around the platform so that the swaying and surging of the platform can be reduced; and the heaving nonlinear energy sink is mounted under the platform so that the heaving of the platform can be reduced; structures such as mass blocks, springs, straight shafts and linear power generators are arranged in the swaying-surging nonlinear energy sink and the heaving nonlinear energy sink; the linear power generators are placed between the mass blocks and the straight shafts; when the platform is subject to a load to generate motion response, the springs drive the mass blocks to move on the straight shafts in a reciprocating manner; in the process, the linear power generators between the mass blocks and the straight shafts convert the vibration energy into electric energy so as to generate electric energy, which can be used by the platform, while the ocean platform motion response is reduced; and therefore, energy is sufficiently utilized.

Description

technical field [0001] The invention relates to a vibration-damping and energy-feeding device for an ocean platform based on a nonlinear energy well, in particular to an ocean platform equipped with a nonlinear energy well capable of generating electricity while damping vibration, and belongs to the field of deep-water ocean drilling platforms. Background technique [0002] As the exploration and development of oil and gas resources gradually move towards the ocean, the offshore platform, as the most important basic equipment, is widely used. The offshore platform works in a relatively harsh marine environment. Under the action of various loads such as wind, waves, and currents, it will produce six types of motion responses: roll, pitch, yaw, sway, surge, and heave. These movements will cause a certain degree of damage to the buildings on the platform, affect the stability of the working process of the equipment, reduce the service life of the platform, bring discomfort to t...

AI Technical Summary

Problems solved by technology

These movements will cause a certain degree of damage to the buildings on the platform, affect the stability of the equipment working process, reduce the service life of the platform, bring discomfort to the staff on the platform, and affect the safety of the staff

At the same time, these movements will also bring huge energy. The traditional vibration reduction methods either increase the subsystem to isolate the vibration source from the main structure, or dissipate the energy through its own damping. At the same time as the vibration reduction effect, the huge energy is not utilized, resulting in a waste of energy

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