KR20150052486A - Apparatus for damping and generating vortex induced vibration of ocean riser, and vessel or ocean construction comprising the same - Google Patents

Apparatus for damping and generating vortex induced vibration of ocean riser, and vessel or ocean construction comprising the same Download PDF

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Publication number
KR20150052486A
KR20150052486A KR1020130133907A KR20130133907A KR20150052486A KR 20150052486 A KR20150052486 A KR 20150052486A KR 1020130133907 A KR1020130133907 A KR 1020130133907A KR 20130133907 A KR20130133907 A KR 20130133907A KR 20150052486 A KR20150052486 A KR 20150052486A
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South Korea
Prior art keywords
unit
rotor unit
riser
generating
generator rotor
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KR1020130133907A
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Korean (ko)
Inventor
강효동
신동조
김필근
주영석
이광민
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대우조선해양 주식회사
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Priority to KR1020130133907A priority Critical patent/KR20150052486A/en
Publication of KR20150052486A publication Critical patent/KR20150052486A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
    • E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
    • E21B19/006—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform including heave compensators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0085—Adaptations of electric power generating means for use in boreholes

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Disclosed is an apparatus for damping and generating vortex induced vibration of an ocean riser. According to an embodiment of the present invention, the apparatus for damping and generating vortex induced vibration comprises: a pipe-shaped riser unit arranged from a hull to the ocean floor; a generation rotor unit arranged to be rotated to the riser unit; a plurality of blade units arranged from an upper portion to a lower portion of the generation rotor unit, and coupled to the generation rotor unit to be rotated by the flow of seawater and to rotate the generation rotor unit; and a seawater generation unit arranged to generate electricity by a rotational force of the generation rotor unit which is rotated by the blade units.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a marine riser vortex vibration induction damping and power generation device, and a ship or an ocean structure including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marine riser vortex induced damping and generating device and a ship or an ocean structure including the same, and more particularly, to a marine riser vortex induced damping and generating device capable of damping vibrations of a riser, Or an offshore structure.

The drill rig is used to develop deep-sea oil resources.

The risers used for petroleum resource development are largely divided into petroleum resource production riser and drilling rizer.

Such a riser is subjected to a load at the seabed by the flow of seawater, and due to the load at the seabed, a vortex induced vibration (VIV) may be generated.

The VIV phenomenon described above can remarkably shorten the fatigue life of the riser, and is a factor to be considered in the designing stage of the riser.

Currently, devices that reduce the VIV of the riser have developed devices such as wing strake and faring to attach to the outer diameter of the riser.

Korean Patent Application No. 10-2005-7016124

An embodiment of the present invention is to provide a marine riser vortex-induced damping and generating device capable of reducing the VIV phenomenon of a riser and generating electricity by generating electricity, and a ship or an offshore structure including the same.

According to an aspect of the present invention, there is provided a piping system comprising: a pipeline-shaped riser unit disposed under the seabed from a hull; A generator rotor unit rotatably disposed in the riser unit; A plurality of blade units disposed in the generator rotor unit from the top to the bottom of the generator rotor unit and coupled to the generator rotor unit to rotate by the flow of seawater and to rotate the generator rotor unit; And a seawater generating unit provided to generate electricity by the rotational force of the generating rotor unit rotated by the blade unit.

Wherein the blade unit comprises: a spiral blade disposed in a spiral shape and spaced apart from the generating rotor unit to be rotated by the flow of seawater, the spiral blade surrounding the generating rotor unit; And a horizontal blade coupling the spiral blade to the generating rotor unit.

The helical blades may be disposed at 180 degree intervals with respect to the generating rotor unit.

The power generating rotor unit may be arranged in a plurality of units along the riser unit.

The seawater generating unit includes: a power generating module for performing power generation; And a gear module coupled to the generator rotor unit to transfer rotational force of the generator rotor unit to the generator module.

Wherein the seawater generating unit includes: a permanent magnet disposed in one of the riser unit and the generating rotor unit; And a generator coil disposed in the other of the riser unit and the generator rotor unit, the generator coil being disposed corresponding to the permanent magnet to produce electricity.

According to another aspect of the present invention, there is provided a ship or an offshore structure capable of performing power generation by the marine riser vortex-induced damping and generating device.

According to an embodiment of the present invention, it is possible to provide a marine riser vortex-induced damping and generating device capable of reducing the VIV phenomenon of a riser as well as generating electricity by generating electricity, and a ship or an offshore structure including the same .

1 is a schematic diagram of a marine riser vortex-induced damping and generating device according to an embodiment of the present invention.
2 is a schematic diagram of a marine riser vortex-induced damping and generating device according to another embodiment of the present invention.

Various embodiments of the present invention will now be described by way of specific embodiments shown in the accompanying drawings. The differences between the embodiments of the present invention described below are to be understood as mutually exclusive. That is, the specific shapes, structures, and characteristics described may be embodied in other embodiments in accordance with one embodiment without departing from the spirit and scope of the present invention, It is to be understood that the arrangements may be altered, where like reference numerals refer to like or similar features throughout the several views, and length and area, thickness, and the like may be exaggerated for convenience.

1 and 2, a marine riser vortex-induced vibration reduction apparatus according to an embodiment of the present invention includes a pipeline-shaped riser unit 100 disposed under the sea from a ship, A generator rotor unit 110 disposed in the generator rotor unit 110 from the upper portion to the lower portion of the generator rotor unit 110 so as to be rotated by the flow of seawater and to rotate the generator rotor unit 110; A plurality of blade units 120 coupled to the power generation rotor unit 110 and a seawater generation unit 130 configured to generate electricity by the rotational force of the power generation rotor unit 110 rotated by the blade unit 120, .

In the apparatus for reducing vibration of a marine riser vortex induced vibration according to an embodiment of the present invention, when the sea water flows into the riser unit 100, the blade unit 120 can be rotated by sea water, The power generation rotor unit 110 can be rotated.

The flow energy of the seawater applied to the riser unit 100 is converted into the kinetic energy of the blade unit 120 and absorbed thereby to rotate the generator rotor unit 110 and to be operated by the generator rotor unit 110 The power of the sea water can be converted into electric energy by the sea water power generation unit 130 which is connected to the sea water.

At this time, the impact and vibration applied to the riser unit 100 by the flow of the seawater are converted into the kinetic energy of the blade unit 120, so that the VIV phenomenon of the riser unit 100 can be reduced. The energy that is transferred to the ship by the ship can be converted into electric energy by the seawater generating unit 130 and stored as available energy of the ship.

The system for converting the flow energy of seawater into the kinetic energy of the power generation rotor unit 110 corresponding to the vertical axis is characterized in that seawater flows from any direction of the power generation rotor unit 110 The blade unit 120 is configured to be able to rotate even if it flows, and watertight components that prevent seawater intrusion can be applied.

This blade unit 120 is provided so as to have substantially the same blade shape as the vertical axis wind power generator. That is, the blade unit 120 can use blades of various shapes and arrangement shapes used in a vertical axis wind power generator.

As shown in FIG. 1, the blade unit 120 according to the present embodiment has a spiral shape from the upper portion to the lower portion of the generator rotor unit 110, and is disposed in a spiral shape surrounding the generator rotor unit 110. At this time, the blade units 120 may be disposed at intervals of 180 degrees with respect to the generating rotor unit 110. [

The blade unit 120 according to the present embodiment is provided at a pitch interval smaller than the 180 degree range in which the generator rotor unit 110 is wound half a turn. The blade unit 120 also includes a spiral blade 121 disposed to be separated from the generating rotor unit 110 to be rotated by the flow of seawater and a horizontal blade 121 for coupling the spiral blade 121 to the generating rotor unit 110. [ (Not shown).

The spiral blade 121 and the horizontal blade 122 have a wing shape capable of being moved by the pressure difference due to the flow of the seawater and capable of being rotated by receiving the flow force of the seawater.

That is, the helical blade 121 may have a blade shape in which the blade width direction is perpendicular to the outer circumferential surface of the power generating rotor unit 110, and the horizontal blade 122 is a wing Lt; / RTI >

These spiral blades 121 can absorb the flow energy of the coming seawater in a 360 degree range of the generator rotor unit 110 by being arranged at 180 degree intervals and the horizontal blade 122 can also absorb the flow energy of the upcoming seawater at about 60 degrees By arranging them at intervals, it is possible to absorb the flow energy of the coming seawater in almost all directions.

As described above, in the riser unit 100, the flow energy of the seawater capable of impact and vibration is absorbed by the blade unit 120 and stored in the seawater generating unit 130, so that the vibration and shock transmitted to the ship can be reduced It can produce up to electricity.

The sun gear and the sun gear are connected between the blade unit 120 and the generator rotor unit 110 so as to increase the rotation torque of the generator rotor unit 110 by the blade unit 120, , A speed reducer for increasing the torque including the planetary gear may be disposed.

Also, although not all shown, the riser unit 100 has a length that extends from the hull to the deep sea floor in the water. The riser unit 100 includes a riser unit for producing petroleum resources and a drilling riser unit used for developing deep-sea oil resources.

Accordingly, the generating rotor unit 110 according to the present embodiment can be disposed in a plurality of rows along the riser unit 100 during a period where a large amount of seawater flow energy is generated in the water. Accordingly, the blade unit 120 corresponding to the power generation rotor unit 110 is disposed together, and the power generation amount can be increased by the seawater generation unit 130.

The seawater power generation unit 130 according to the present embodiment includes a power generation module 131 that performs power generation and a power generation module 130 that is coupled to the power generation rotor unit 110 to transfer the rotational force of the power generation rotor unit 110 to the power generation module 131 And a gear module 136.

The power generation module 131 may include a permanent magnet 141 and a power generation coil 142 corresponding to the permanent magnet 141 so that the power generation module 131 can produce electricity. The power generation module 131 may include any one of the permanent magnet 141 and the power generation coil 142 Can be rotated in conjunction with the gear module (136).

The gear module 136 is shown as a rotary gear 137 simply coupled to the generator rotor unit 110 and a generator gear 138 coupled to the generator module 131, It may have a more complicated configuration including a speed reducer.

Further, the power generation module 131 and the gear module 136 can be sealed in a box shape with respect to the power generation rotor unit 110. The power generation module 131 is connected with a cable 139 that can send the produced electricity to the hull. Such a cable 139 may be disposed inside the riser unit 100.

Although the above-described marine riser vortex-induced damping and generating device is schematically shown on the outside of the gear module 136, the gear module 136 is not actually disposed outside the generator rotor unit 110, 110, or may not be structurally related.

The marine riser vortex-induced damping and generating device described below can be used in the case where the gear module 136 is further disposed outside the generator rotor unit 110 or between the riser unit 100 and the generator rotor unit 110, And other elements are assumed to be in contradiction with the above-described embodiment, and watertight elements preventing seawater intrusion can be applied.

2, the seawater generating unit 130 according to another embodiment of the present invention includes a permanent magnet 141 disposed in one of the riser unit 100 and the generator rotor unit 110, And a power generation coil 142 disposed in the other of the unit 100 and the power generation rotor unit 110 and arranged corresponding to the permanent magnets 141 to produce electricity.

The generator rotor unit 110 and the riser unit 100 are provided with permanent magnets 141 and power generating coils 141. The power generating rotor unit 110 is rotatably disposed outside the riser unit 100, (142) is arranged to be relatively rotatable.

For example, when the permanent magnet 141 is disposed in the generator rotor unit 110 and the generator coil 142 is disposed in the riser unit 100, the generator rotor unit 110 is rotated by the blade unit 120 Electricity can be produced by the relative movement of the permanent magnet 141 and the power generation coil 142 when the permanent magnet 141 is rotated relative to the power generation coil 142 by the power generation rotor unit 110. [

At this time, it is also possible to arrange the permanent magnets 141 and the power generation coil 142 in an opposite manner, and an element capable of reducing the rotational moment of inertia for the rotational motion must be installed in the power generating rotor unit 110, It is advantageous in the action of converting energy into rotational energy.

The power generation module 131 as shown in FIG. 1 may further be disposed outside the power generation rotor unit 110 according to this alternative embodiment to produce electricity by interlocking with the rotation gear 137.

In addition, according to an embodiment of the present invention, a vessel or an offshore structure capable of performing power generation by the above-described ocean riser vortex-induced damping and generating device may be provided.

Such a ship or an offshore structure is advantageous over a ship or an offshore structure with only the existing riser unit 100 in terms of reduction of impact and vibration transmitted from the riser unit 100 to the ship, although the hull is not shown. At this time, the VIV phenomenon of the riser unit 100 does not generate vibration due to the VIV phenomenon by the blade unit 120 and the generator rotor unit 110, and shock and vibration caused by seawater are converted into rotational energy, .

In other words, such a ship or an offshore structure has a problem in that, due to the VIV phenomenon of the riser unit 100 due to the flow of seawater, the energy due to vibration and impact, which is consumed unnecessarily and adds fatigue, And the available available energy is increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Deletion, addition or the like of the present invention may be variously modified and changed within the scope of the present invention.

100: riser unit 110: generator rotor unit
120: blade unit 121: spiral blade
122: horizontal blade 130: seawater generating unit
131: power generation module 136: gear module
139: Cable 141: Permanent magnet
142: power generation coil

Claims (7)

A pipeline shaped riser unit arranged under the sea from the hull;
A generator rotor unit rotatably disposed in the riser unit;
A plurality of blade units disposed in the generator rotor unit from the top to the bottom of the generator rotor unit and coupled to the generator rotor unit to rotate by the flow of seawater and to rotate the generator rotor unit; And
And a seawater generating unit provided to generate electricity by the rotational force of the generator rotor unit rotated by the blade unit. The method according to claim 1,
The blade unit includes:
A spiral blade disposed to be spaced apart from the generating rotor unit to be rotated by the flow of seawater, the spiral blade being disposed in a spiral shape surrounding the generating rotor unit; And
And a horizontal blade coupling said spiral blade to said generating rotor unit. 3. The method of claim 2,
Wherein said spiral blades are disposed at 180 degree intervals relative to said generating rotor unit. 3. The method of claim 2,
Wherein the generator rotor unit is arranged in a plurality of rows along the riser unit. 3. The method of claim 2,
The seawater generating unit includes:
A power generation module for performing power generation; And
And a gear module coupled to the generator rotor unit to transfer rotational force of the generator rotor unit to the generator module. 3. The method of claim 2,
The seawater generating unit includes:
A permanent magnet disposed in any one of the riser unit and the generator rotor unit; And
And a generator coil disposed in the other one of the riser unit and the generator rotor unit, the generator coil being disposed corresponding to the permanent magnet to produce electricity. A ship or an offshore structure provided to perform power generation by the above-mentioned marine riser vortex-induced damping and generating device according to any one of claims 1 to 6.
KR1020130133907A 2013-11-06 2013-11-06 Apparatus for damping and generating vortex induced vibration of ocean riser, and vessel or ocean construction comprising the same KR20150052486A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170021530A (en) 2015-08-18 2017-02-28 대우조선해양 주식회사 Vortex Induced Vibration Reducing Structure and Riser having the Same
CN107339200A (en) * 2017-08-23 2017-11-10 华侨大学 Stainless steel concrete composite pillar for marine environment
KR20180046805A (en) 2016-10-28 2018-05-09 대우조선해양 주식회사 Apparatus for reducing vortex induced vibration
KR20190073161A (en) 2017-12-18 2019-06-26 대우조선해양 주식회사 Vortex induced vibration reducing apparatus
KR20190080108A (en) * 2017-12-28 2019-07-08 삼성중공업 주식회사 Riser supporting apparatus
US11585321B2 (en) * 2020-10-28 2023-02-21 General Electric Company Method and system for attaching vortex suppression devices to a wind turbine tower
CN117125207A (en) * 2023-10-24 2023-11-28 青岛恒源新电力科技有限公司 Floating type offshore wind power generation platform

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170021530A (en) 2015-08-18 2017-02-28 대우조선해양 주식회사 Vortex Induced Vibration Reducing Structure and Riser having the Same
KR20180046805A (en) 2016-10-28 2018-05-09 대우조선해양 주식회사 Apparatus for reducing vortex induced vibration
CN107339200A (en) * 2017-08-23 2017-11-10 华侨大学 Stainless steel concrete composite pillar for marine environment
KR20190073161A (en) 2017-12-18 2019-06-26 대우조선해양 주식회사 Vortex induced vibration reducing apparatus
KR20190080108A (en) * 2017-12-28 2019-07-08 삼성중공업 주식회사 Riser supporting apparatus
US11585321B2 (en) * 2020-10-28 2023-02-21 General Electric Company Method and system for attaching vortex suppression devices to a wind turbine tower
CN117125207A (en) * 2023-10-24 2023-11-28 青岛恒源新电力科技有限公司 Floating type offshore wind power generation platform

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