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Vibration resisting strakerotating power generation and corrosion protection device and method

A technology of strakes and accumulators, applied in earthwork drilling, engine components, machines/engines, etc., can solve the problems of inconvenient on-site adoption and high energy consumption, and achieve the effect of suppressing vortex-induced vibration and suppressing vortex-induced vibration

Inactive Publication Date: 2019-01-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active suppression device of vortex-induced vibration needs to inject external energy to drive the rotation of the accessory device, which consumes a lot of energy and is not convenient for field use

Method used

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  • Vibration resisting strakerotating power generation and corrosion protection device and method
  • Vibration resisting strakerotating power generation and corrosion protection device and method
  • Vibration resisting strakerotating power generation and corrosion protection device and method

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Embodiment

[0038] When installing the device of the present invention, at first the inner cylinder 2 is fixedly installed on the standpipe 1 .

[0039] Secondly, a conductive elastic piece 10 is fixedly glued on the outer wall of the standpipe 1, and the auxiliary anode 11 is also fixed on the outer wall of the standpipe 1, and another conductive elastic piece 10 is fixedly glued on the auxiliary anode 11. Align the bolt holes on the accumulator 3 axially with the bolt holes on the inner cylinder 2, and install and fix the accumulator 3 on the inner cylinder 2 through bolts. The anode of the output joint 12 on the accumulator 3 is fixedly connected to the conductive shrapnel 10 on the auxiliary anode 11 through a wire, and the cathode of the output joint 12 on the accumulator 3 is fixedly connected to the conductive shrapnel 10 on the outer wall of the riser 1 through a wire.

[0040] Next, screw the internal thread on the inner wall of the roller bearing 5 with the external thread on th...

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Abstract

The invention relates to a vibration resisting strake rotating power generation and corrosion protection device and method. The device is composed of a sleeve assembly and a circuit system. The sleeveassembly is driven by ocean current, the outer cylinder is rotated, a rotating DNA-like strake disrupts the flow field around a riser, destroys the formation of a vortex around the flow, and suppresses vortex-induced vibration of the riser. The circuit system comprises two parts of cutting magnetic induction line electricity generation and external current corrosion protection. Magnetic pole sealing rings internally provided with magnetic poles are respectively fixedly to upper and lower ends of the inner cylinder. The magnetic field is generated around the device. When the DNA-like strake rotates, a conductor in the radial short board cuts a magnetic induction line, and currents are generated. The currents pass through a wire in the DNA-like strake and reach a conducting plate, and is transferred to a condenser by a sliding connector. The currents in the condenser are respectively connected to the riser and an auxiliary anode by an output connector, and external current corrosion protection of the riser is achieved. Rotation of the DNA-like strake achieves the functios of vortex-induced vibration resisting and external current corrosion protectionof the riser.

Description

technical field [0001] The invention belongs to the technical field of marine lift pipe laying, and in particular relates to a vibration-suppressing strake rotary power generation and anti-corrosion device and method. Background technique [0002] Today, with the rapid economic development, the demand for energy continues to rise, and traditional energy such as oil and natural gas are non-renewable resources, and their resource reserves are declining year by year. One of the key methods of external dependence. [0003] In the development of offshore oil and gas, the marine riser is the key link connecting the seabed wellhead or submarine pipeline and the floating facilities on the sea surface. Due to the complex and harsh marine environment, especially the deep water environment is more complex and changeable, the vortex induced vibration continues under the action of waves and currents. , is prone to fatigue damage, and the standpipe is easily corroded in seawater, which n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/01F03B13/12
CPCE21B17/003E21B17/01F03B13/12
Inventor 朱红钧刘文丽赵宏磊
Owner SOUTHWEST PETROLEUM UNIV
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