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Device and method capable of achieving piezoelectric electricity generation and vibration suppression in rotating and synchronous manner

A piezoelectric power generation and rotation synchronization technology, which is applied to generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as fatigue damage, shorten service life, etc. Vibration, cost saving effect

Inactive Publication Date: 2017-03-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, with the continuous deepening of offshore oil and gas development, the offshore riser is placed in a complex marine environment, and is affected by the vortex induced vibration induced by waves and currents, which is prone to fatigue damage, shortens its service life, and even causes major safety accidents

Method used

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  • Device and method capable of achieving piezoelectric electricity generation and vibration suppression in rotating and synchronous manner
  • Device and method capable of achieving piezoelectric electricity generation and vibration suppression in rotating and synchronous manner
  • Device and method capable of achieving piezoelectric electricity generation and vibration suppression in rotating and synchronous manner

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Experimental program
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Embodiment

[0026] When installing this device, first install the lower bearing on the outer wall of the marine riser 1, so that the inner ring 9 of the bearing hugs the marine riser 1, and then install the cage 10 embedded with cylindrical rollers 11 and the outer ring of the bearing in sequence from the inside to the outside 3, and make the opening of the square hole 12 of the lower bearing outer ring 3 upward. Two wire bushings 2 are installed at the two threaded holes 13 of the lower bearing outer ring 3 . Next, insert the two piezoelectric sheets into the square hole 12 of the lower bearing outer ring 3 communicating with the threaded hole 13 through the rectangular limiting piece 14 at its lower end, and make the insulated wire 17 drawn from the end of the rectangular limiting piece 14 penetrate into the Wire casing 2. Install a cylinder attachment column 8 on the side wall of each piezoelectric sheet away from the ocean riser 1 . After installation, the wide piezoelectric sheet 4...

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Abstract

The invention relates to a device and method capable of achieving piezoelectric electricity generation and vibration suppression in a rotating and synchronous manner. The device is composed of a rotation assembly, a piezoelectric assembly and a diversion assembly. The rotation assembly is responsible for achieving the rotation function of the whole device. The piezoelectric assembly and the diversion assembly are arranged in an asymmetric manner. The piezoelectric assembly generates electricity through deformation of piezoelectric patches. The diversion assembly generates torque required for rotation through asymmetric hole plates of different hole densities. When passing through cylinder attached columns on the end portions of the piezoelectric patches, seawater can induce the piezoelectric patches to vibrate so that the piezoelectric patches can unceasingly deform and generate continuous current. Moreover, the detouring flow boundary layer on the surface of a marine riser is damaged by rotating diversion plates and the piezoelectric patches, formation of detouring flow vortex is influenced, and suppression of vibration is achieved. The device synchronously achieves piezoelectric electricity generation and vibration suppression by relying on the marine riser.

Description

technical field [0001] The invention belongs to the technical field of new energy development and utilization and vortex-induced vibration suppression, and in particular relates to a device and method capable of rotating and synchronously realizing piezoelectric power generation and vibration suppression. Background technique [0002] With the continuous deepening of social and economic development, the demand for energy continues to grow, and the contradiction between supply and demand is also sharply highlighted. The reduction of existing proven resources and the intensification of environmental pollution are urgent problems faced by human beings. How to develop and utilize new energy and renewable resources is a breakthrough for the sustainable development of human society, and diversified forms of energy conversion have attracted more and more attention. As an inexhaustible and inexhaustible clean energy, ocean energy includes offshore wind energy, tidal energy, wave en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/01H02N2/18F15D1/10
CPCE21B17/01F15D1/10H02N2/186
Inventor 朱红钧高岳
Owner SOUTHWEST PETROLEUM UNIV
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