CN108025800A - Offshore structure including flowing attenuating structure - Google Patents

Offshore structure including flowing attenuating structure Download PDF

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Publication number
CN108025800A
CN108025800A CN201680053603.5A CN201680053603A CN108025800A CN 108025800 A CN108025800 A CN 108025800A CN 201680053603 A CN201680053603 A CN 201680053603A CN 108025800 A CN108025800 A CN 108025800A
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China
Prior art keywords
moon pool
space
attenuation part
offshore structure
flowing
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Granted
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CN201680053603.5A
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CN108025800B (en
Inventor
梁胜皓
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Samsung Heavy Industries Co Ltd
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Samsung Heavy Industries Co Ltd
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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 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Revetment (AREA)

Abstract

The present invention provides a kind of offshore structure including flowing attenuating structure.The offshore structure includes：Hull, formed with moon pool；And flowing attenuating structure, so that the flowing inside moon pool decays, wherein, the flowing attenuating structure includes the first attenuation part, first attenuation part is protruded by the bottom of the offshore structure to be formed to the moon pool, and will be divided into the first space and second space inside the moon pool.

Description

Offshore structure including flowing attenuating structure
Technical field
The present invention relates to the offshore structure for including flowing attenuating structure, relate more specifically to a kind of following decline including flowing Subtract the offshore structure of structure, it prevents the seawater for flowing into offshore structure from overflowing to deck, in structure operation at sea, reduce because Moon pool and to offshore structure operation apply resistance.
Background technology
In general, equipment of the drilling ship as the crude oil extraction on ocean or combustion gas etc. so that ocean can not be set The sea that the blue water or wave of operating platform are big can carry out the mining operations such as crude oil or combustion gas.
Drilling ship in center formed with the moon pool (MOON POOL) for being configured to opening, for by the pipeline for probing Place seabed bottom surface.Also, moon pool periphery deck (DECK) is provided with the device for probing.
But because seawater flows into moon pool, and apply resistance in operation in ship, be a kind of navigation stability in ship Or the structure that the aspect of seagoing capacity is very unfavorable.
Also, the frequency unanimous circumstances for flowing into the seawater inside the seawater and moon pool in moon pool, in moon pool inland sea Water resonates, and overflows to deck.Therefore, the device for being arranged on moon pool periphery deck be possible to because of the surge of seawater and Break down or damaged.
It is as described above in order to solve the problems, such as, in existing literature (Ebrean Registered Patent the 10-1259718th), prevent because Form the flowing of seawater in the lower part of chunking, and the inside for flowing into moon pool of seawater, and control deck including setting and Suppression flows into the flowing of the seawater in moon pool, thus, reduces the resistance occurred by moon pool.
But the seawater that in the prior art, can prevent from flowing in drill ship is run flows into moon pool, but quiet in drill ship It is little for flowing into the effect of suppression of the seawater inside moon pool because of wave in the state of only.
It is therefore desirable to be able to prevent the seawater for flowing into moon pool from overflowing to the device on deck.
The content of the invention
To provide a kind of offshore structure including flowing attenuating structure, it can be prevented the technical problem to be solved in the present invention The seawater for flowing into moon pool overflows to the deck of offshore structure.
The technical problem of the application is not limited to above-mentioned the problem of mentioning, general for the other technical problems not mentioned Logical technical staff can be expressly understood that from following record.
In order to solve described problem, the offshore structure of one embodiment of the invention includes：Hull, formed with moon pool；And stream Dynamic attenuating structure so that the flowing inside moon pool decays, wherein the flowing attenuating structure includes the first attenuation part, institute State the first attenuation part and protruded by the bottom of the offshore structure and formed to the moon pool, and will be divided into inside the moon pool First space and second space.
First space is formed at the stern-side of the offshore structure, and the second space is formed at the offshore structure Bow-side, the length of the second space is longer than the length in first space.
The height of first attenuation part is lower than the height of the moon pool, is formed on the top of first attenuation part The counteracting space for the seawater cancelled out each other by first space and second space inflow.
First attenuation part is formed slopely with the one side that first space is connected, first attenuation part and institute It is parallel with the medial surface of the moon pool to state the another side that second space is connected.
The one side of first attenuation part is nearer with the distance of the another side more from above toward bottom surface.
Further include：Guide member, is protruded by the deck of the offshore structure and is formed to the moon pool, and guides seawater Flow direction, so that the seawater for flowing into first space flows to the counteracting space.
The guide member gets over the medial surface from the moon pool toward the end of the moon pool, is inclined upwardly to be formed.
Further include：Second attenuation part, is protruded by the bottom of the offshore structure and is formed to the moon pool, and with institute State the first attenuation part to be separated to form, the second space is divided into Part I space and Part II space.
The Part I space configuration is between first space and the Part II space, the Part I The length in space is longer than the length of the second space, and longer than the length in the Part II space.
The flowing attenuating structure further includes：Back sweep plate, configures in the upside of first attenuation part, and forward Just tilt down；Front hang plate, configures in the upside of second attenuation part, and rearward tilts down.
Further include：Rear guide plate, between the water surface being arranged on inside the moon pool and first attenuation part, by described The rear side wall of moon pool protrudes forwards；Front guide plate, the water surface and second attenuation part being arranged on inside the moon pool Between, rearward protruded by the front side wall of the moon pool.
Further include：Chunking is tilted, configures the front sidepiece in first attenuation part, and formed with towards the front The acclivitous front end face of hang plate.
The flowing attenuating structure further includes：Front hang plate, configures in the upside of second attenuation part, rearward Tilt down；Front guide plate, between the water surface being arranged on inside the moon pool and second attenuation part, and by the moon pool Front side wall rearward protrude；Rear guide plate, between the water surface being arranged on inside the moon pool and first attenuation part, And protruded forwards by the rear side wall of the moon pool；Barrier plate, is arranged on the water surface inside the moon pool and is led with the rear Between plate, and protruded by the rear side wall of the moon pool.
For to solve the problem, the offshore structure of another form of implementation of the invention includes：Hull, formed with moon pool； And flowing attenuating structure, the flowing inside moon pool is decayed, wherein, the flowing attenuating structure further includes：First decay Component and the second attenuation part, mutually separate configuration；Front hang plate, configures in the upside of second attenuation part, and to Rear tilts down；First barrier plate, between the water surface being arranged on inside the moon pool and first attenuation part, and by institute The rear side wall for stating moon pool protrudes forwards；Second barrier plate, is arranged on the water surface inside the moon pool, and by the moon pool Rear side wall protrude forwards, wherein, second attenuation part moon pool opposite with second attenuation part Front side wall contact configuration, the rear side wall of first attenuation part moon pool opposite with first attenuation part contact Configuration.
The offshore structure for including flowing attenuating structure of several embodiments of the present invention, declines by combined with moon pool first Subtract component, the open space of moon pool is divided into multiple spaces, flows into the seawater in multiple spaces and can cancel out each other in moon pool.
Therefore, by preventing the seawater for flowing into moon pool from overflowing to the deck of offshore structure, and prevent from being arranged on moon pool week The equipment on side breaks down because of the percussive pressure of seawater.
Also, at sea in the operation of structure, the resistance applied by moon pool to offshore structure is reduced, so as to improve sea The operational efficiency of structure.
The effect of several embodiments of the present invention is not to be limited by the above-mentioned effect mentioned, for the other effects not mentioned Fruit, those skilled in the art can be expressly understood that from the record of right.
Brief description of the drawings
Fig. 1 is the figure of the offshore structure with flowing attenuating structure of display one embodiment of the invention；
The amplification stereogram for the flowing attenuating structure that Fig. 2 is Fig. 1；
The sectional view for the flowing attenuating structure that Fig. 3 is Fig. 1；
The figure of the size for the flowing attenuating structure that Fig. 4 is display Fig. 1；
Fig. 5 is the wave in the moon pool of the offshore structure with flowing attenuating structure of display one embodiment of the invention The chart of height；
Fig. 6 is the sectional view of the offshore structure of display another embodiment of the present invention；
Fig. 7 is the figure of the guide member of the offshore structure of display another embodiment of the present invention；
Fig. 8 is the figure of a briefly part for the offshore structure of display another embodiment of the present invention；
The figure of the experimental example for the flowing attenuating structure that Fig. 9 is display Fig. 8；
Figure 10 is the figure of the comparative example of display Fig. 9；
Figure 11 is the figure of the offshore structure of display another embodiment of the present invention；
The figure of the experimental example for the flowing attenuating structure that Figure 12 is display Figure 11；
Figure 13 is the figure of the offshore structure of display another embodiment of the present invention；
The figure of the experimental example for the flowing attenuating structure that Figure 14 is display Figure 13.
Embodiment
In the following, the embodiment of the present invention is specifically described referring to the drawings.But attached drawing is only used for more easily disclosing this The content of invention and illustrate, the scope of the present invention not by attached drawing scope limit, those skilled in the art It can be easier to understand.
Also, when illustrating the embodiment of the present invention, show in advance, for the inscape with identical function, use Same names and same-sign, it is substantially, entirely different with the inscape of existing apparatus.
Also, term used herein is merely to illustrate specific embodiment and uses, the present invention is not limited. Expression for odd number, does not make clearly different expressions in article, includes the expression of plural number.In the application " comprising " or Terms such as " having " refers to that there are the feature described in specification, quantity, step, action, inscape, component or feature, number Amount, step, action, the presence or increase of inscape, component combination, it will be appreciated that it is other not exclude one or more Feature, quantity, step, action, inscape, component or feature, quantity, step, action, inscape, component combination are deposited Or increased possibility.
Fig. 1 is the offshore structure with flowing attenuating structure of one embodiment of the invention, and the flowing that Fig. 2 is Fig. 1 decays The amplification stereogram of structure.
With reference to Fig. 1 and Fig. 2, moon pool 100 penetrates through offshore structure 50.Set on 100 periphery deck (deck) of moon pool and be used to bore The various equipments visited, pipeline for probing etc. extend to seabed by moon pool 100.
As shown in Figures 1 and 2, the offshore structure with flowing attenuating structure of one embodiment of the invention declines including first Subtract component 200.
First attenuation part 200 is arranged on the moon pool 100 of perforation offshore structure 50, and is protruded by the bottom of offshore structure 50 Formed to moon pool 100, the first space 110 and second space 120 will be divided into inside moon pool 100.
Seawater is flowed into the open space of moon pool 100 by the bottom surface of offshore structure 50.Thus, seawater is by offshore structure 50 Bottom surface 80 is separately flowed into the first space 110 of moon pool 100 and second space 120.
At this time, the first space 110 is formed at 70 side of stern of offshore structure 50, and second space 120 is formed at offshore structure 50 60 side of fore.
When at sea structure 50 moves, the fore along the seawater that the bottom surface 80 of offshore structure 50 is flowed by offshore structure 50 60 flow to 70 direction of stern.Therefore, the first attenuation part 200 in a manner of the flow direction with seawater intersects with moon pool 100 With reference to.
Therefore, when at sea structure 50 moves, it is empty that second space 120 and first is flowed into by the bottom surface 80 of offshore structure 50 Between 110 seawater flowed from the fore 60 of offshore structure 50 to 70 direction of stern in the moon pool 100.
Also, in the state of at sea structure 50 is static, when carrying out drilling operation, because of wave, seawater flows into first Space 110 and second space 120.
In addition, the height of the first attenuation part 200 is lower than the height of moon pool 100, in the top shape of the first attenuation part 200 Into the counteracting space 130 for the seawater flowed into by the first space 110 and second space 120 of cancelling out each other.
I.e., in one embodiment of this invention, the first attenuation part 200 forms the sea that must make to flow into the first space 110 Water is cancelled out each other with flowing into the seawater of second space 120 in counteracting space 130.
For this reason, as shown in being shown Fig. 3, the first attenuation part 200 is formed slopely with the one side 230 that the first space 110 is connected, First attenuation part 200 and the another side 240 being connected of second space 120 are parallel with the medial surface of moon pool 100.
The seawater in the first space 110 is flowed into being flowed along another side 240 along the one side 230 of the first attenuation part 200 The flow direction entered to the seawater of second space 120 is mutually different.
At this time, the inclined one side 230 of the first attenuation part 200 is more from above 210 toward bottom surface 220, with another side 240 Distance it is nearer.Thus, the seawater in the first space 110 is flowed into along the one side 230 of the first attenuation part 200 to moon pool 100 Medial surface movement, after being touched with the medial surface of moon pool 100, to offset space 130 flow.
In addition, along the another side 240 of the first attenuation part 200 and to flow into the seawater of second space 120 empty by second Between 120 flow to offset space 130.
The seawater for flowing into the first space 110 and the seawater for flowing into second space 120 are flowed into from mutually different direction Cancel out each other to counteracting space 130 offsetting space 130, thus, seawater does not overflow to 100 periphery deck D of moon pool.
Because of the percussive pressure of seawater breakage occurs for the equipment thereby, it is possible to prevent from being arranged on deck D.
Also, the seawater in one embodiment of this invention, flowed into inside moon pool 100 mutually supports in counteracting space 130 Disappear, thus reduce the resistance of the operation applied by moon pool 100 to offshore structure 50, thereby, it is possible to improve offshore structure 50 Operational efficiency.
As shown in being shown Fig. 4, the height and length of the first attenuation part 200 according to the equipment for being arranged on offshore structure 50 or The size of offshore structure 50 and it is different.
That is, according to the operation carried out in moon pool 100, various equipments are set on the top of the first attenuation part 200.
Therefore, the first space 110 is formed smaller than second space 120, and the first attenuation part 200 nearly forms the first space The medial surface of 110 moon pool 100, thereby, it is possible to easily set equipment on the top of the first attenuation part 200.
Also, second space 120 is significantly formed, thus, the extension such as standpipe of probing is used for by second space 120 To seabed.
For example, the height h2 of the first attenuation part 200 can be 20%~80% scope of moon pool height h1, by moon pool 100 The length L1 of one side 230 of medial surface to the first attenuation part 200 can be the medial surface by moon pool 100 to the first attenuation part 30%~70% scope of the length L2 of 200 another side 240.
Therefore, the first attenuation part 200 is with from the medial surface by moon pool 100 to the another side 240 of the first attenuation part 200 Length L2 deduct from the medial surface of moon pool 100 to the length L1 of the one side 230 of the first attenuation part 200 after remaining length Formed.
At this time, accounted for moon pool 100 by the length L2 of another side 240 of medial surface to the first attenuation part 200 of moon pool 100 and grown Spend the 20%~80% of L.
In addition, shown in content as described above, the one side 230 of the first attenuation part 200 is formed slopely to guide seawater Mobile route.Therefore, as shown in being shown Fig. 4, the one side 230 of the first attenuation part 200 is relative to the upper of the first attenuation part 200 The tiltangleθ 1 in face 210 can be 30 degree~90 degree scopes.
That is, the first attenuation part 200 can be according to the size of offshore structure 50 or the size of moon pool 100 and the probing used Equipment and be sized.
Fig. 5 is the height of wave in the moon pool of the ship with flowing attenuating structure of display one embodiment of the invention Chart.In Figure 5, comparative illustration does not have the offshore structure 50 of the first attenuation part 200 in moon pool 100 and in moon pool 100 Inside there is the offshore structure 50 of the first attenuation part 200.
That is, as shown in being shown Fig. 3 to Fig. 5, it is assumed that the height on deck is 6m, and seawater flows into moon pool 100 and in specific frequency Resonate, thus overflowed to the D of deck under rate, the seawater of maximum 2m height h1 can never have the first attenuation part 200 Moon pool 100 overflow to deck D.
And overflow from the moon pool 100 with the first attenuation part 200 to the height h2 of the seawater of the deck D of offshore structure 50 For 0m, thus seawater does not overflow to deck D.
Thus, the flowing attenuating structure of one embodiment of the invention in moon pool 100 because having the first attenuation part 200, energy Enough prevent the seawater for flowing into moon pool 100 from overflowing to deck D, thus, it is possible to prevent from being arranged on the dress of 100 periphery deck D of moon pool It is standby to break down because of the percussive pressure of seawater.
Fig. 6 is the sectional view of the offshore structure of display another embodiment of the present invention.
As shown in being shown Fig. 6, flowing attenuating structure includes 100 and first attenuation part 200 of moon pool.
Another embodiment of the present invention flowing attenuating structure 100 and first attenuation part 200 of moon pool, because with reference such as Figure 1 above is identical to 100 and first attenuation part 200 of moon pool of the flowing attenuating structure of Fig. 4 one embodiment of the invention illustrated Or essence is similar, thus, give omission and illustrate.
In addition, as shown in being shown Fig. 6, flowing attenuating structure further includes guide member 300.
Guide member 300 is protruded by the deck D of offshore structure 50 and formed to moon pool 100, and guides seawater to flow Direction, so that the seawater for flowing into the first space 110, which flows to, offsets space 130.
That is, flowed into along the first attenuation part 200 seawater in the first space 110 along guide member 300 flow to Disappear space 130.
Guide member 300 is with more from the medial surface of moon pool 100 toward the end of moon pool 100, acclivitous mode Formed.
Fig. 7 is the figure of the guide member of the offshore structure of display another embodiment of the present invention.
As shown in being shown Fig. 7, the horizontal plane of the bottom surface 300a and deck D of guide member 300 form less than 70 degree of inclination Angle θ 2.
As shown in being shown Fig. 6, the seawater for flowing into the first space 110 is flowed along the one side 230 of the first attenuation part 200 Move to the medial surface of moon pool 100, after being touched with the medial surface of moon pool 100, flowed along the bottom surface 300a of guide member 300 To counteracting space 130.
The seawater for offsetting space 130 is flowed into along guide member 300 with flowing into counteracting space by second space 120 130 seawater meets and offsets.
Thus, in the offshore structure of several embodiments of the present invention, flowing attenuating structure includes the first attenuation part 200.The flow direction of the seawater of moon pool 100 is flowed into by guiding, and causes counteracting space 130 of the seawater in moon pool 100 Cancel out each other.
Prevent seawater from being overflowed by moon pool 100 to deck D, thus, it is possible to prevent from being arranged on the equipment on 100 periphery deck of moon pool Breakage occurs because of the percussive pressure of seawater.
Also, when at sea structure 50 moves, the resistance that the operation to offshore structure 50 applies can be reduced because of moon pool 100 Power.
Fig. 8 is the figure of a briefly part for the offshore structure of display another embodiment of the present invention.Observed as reference During Fig. 8, right direction is the front (bow-side) of offshore structure (for example, drilling ship) 1001, and left direction is offshore structure 1001 rear (stern-side).
With reference to Fig. 8, offshore structure 1001 includes hull 1010 and flowing attenuating structure 1100.
In hull 1010 formed with moon pool 1020.Moon pool 1020 with pipeline is (not shown) as being transferred probing to ship Opening portion below body 1010, moon pool 1020 is with above-below direction penetrates through hull 1010 and is formed.
Flowing attenuating structure 1100 is so that the flowing inside moon pool 1020 decays.
Flowing attenuating structure 1100 includes the second attenuation part 1110 and the first attenuation part 1120.Second attenuation part 1110 water surface inside moon pool 1020 is in the following, and front portion (that is, bow-side) of the configuration inside moon pool 1020.First decay Component 1120 is located at the water surface inside moon pool 1020 in the following, and rear portion (that is, stern-side) of the configuration inside moon pool 1020.
The fortune up and down of water inside second attenuation part, 1110 and first attenuation part, the 1120 effective attenuation moon pool 1020 It is dynamic.In other words, the second attenuation part 1110 and the first attenuation part 1120 are by by the up and down motion of the water inside moon pool 1020 A part for energy is converted to horizontal movement energy, and the up and down motion of water is decayed.
Second attenuation part 1110 and the first attenuation part 1120, which mutually separate, to be configured, by the second attenuation part 1110 with Space (hereinafter, referred to as Part I space 1031) between first attenuation part 1120 and moved down for probing pipeline.
According to the present embodiment, before the second attenuation part 1110 moon pool 1020 opposite with second attenuation part 1110 Square side wall separates configuration.Also, after the first attenuation part 1120 moon pool 1020 opposite with first attenuation part 1120 Square side wall separates configuration.At this time, between the second attenuation part 1110 and the front side wall of moon pool 1020 formed space (in the following, Referred to as Part II space 1032), space is formed between the first attenuation part 1120 and rear side wall (hereinafter, referred to as first Space 1033).
This situation, moon pool is flowed into by Part I space 1031,1032 and first space 1033 of Part II space The up and down motion of water inside 1020 is changed by the second attenuation part 1110 and the first attenuation part 1120 and the direction flowed For horizontal movement, in this process, the horizontal movement of water is overlapped and decays.
Flowing attenuating structure 1100 further includes front hang plate 1130 and back sweep plate 1140.Front hang plate 1130 is matched somebody with somebody Put in the upside of the second attenuation part 1110, and configured by rearward in a manner of tilting down.Back sweep plate 1140 is matched somebody with somebody Put in the upside of the first attenuation part 1120, and configured by forwards in a manner of tilting down.The front hang plate 1130 With back sweep plate 1140 so that the ripples inside moon pool 1020 are decayed.
In addition, flowing attenuating structure 1100 further includes front guide plate 1150 and rear guide plate 1160.
Front guide plate 1150 is arranged between the water surface inside moon pool 1020 and the second attenuation part 1110, from moon pool 1020 Front side wall rearward protrude.Rear guide plate 1160 be arranged on the water surface inside moon pool 1020 and the first attenuation part 1120 it Between, and protruded forwards from the rear side wall of moon pool 1020.
The front guide plate 1150 and rear guide plate 1160 will be by 1032 and first spaces 1033 of Part II space and on The water risen is guided by horizontal direction.Thus, the up and down motion of the water inside moon pool 1020 decays.
Also, flowing attenuating structure 1100, which further includes, tilts chunking 1170.Chunking 1170 is tilted to configure in the first attenuator The front sidepiece of part 1120, and formed with towards 1130 acclivitous front end face of front hang plate.
The inclination chunking 1170 changes the water for flowing into moon pool 1020 by front hang plate 1130 and travel direction, The ripples occurred in the transfer process of direction are eliminated wave in front hang plate 1130.
The figure of the experimental example for the flowing attenuating structure that Fig. 9 is display Fig. 8, Figure 10 are the comparative example of the experimental example of display Fig. 9 Figure.
As reference, in Fig. 9 and Figure 10, trunnion axis shows the frequency of the up and down motion of the water inside moon pool, vertical axis It is shown in the height of the water surface of moon pool inner center portion.Also, the comparative example of Figure 10 shows the situation of emptying inside moon pool.Figure The result of the experimental example of 9 and Figure 10 is drawn by model experiment, but is not limited to this.
With reference to Figure 10, in the comparative example emptied inside moon pool, between about 0.1~0.12Hz, moon pool is able to confirm that Internal up and down motion is strong.
And with reference to Fig. 9, it is internally provided with moon pool 1020 in the experimental example of flowing attenuating structure 1100 of the present embodiment, with Figure 10 is different, is able to confirm that in the gamut of frequency, the up and down motion inside moon pool 1020 is weaker.
Figure 11 is the figure of the flowing attenuating structure of display another embodiment of the present invention.With reference to Figure 11, attenuating structure is flowed 1200 lead including the second attenuation part 1210, the first attenuation part 1220, front hang plate 1230, front guide plate 1250, rear Plate 1260 and barrier plate 1270.
Second attenuation part 1210, the first attenuation part 1220, front hang plate 1230, front guide plate 1250, rear are led The second attenuation part 1110, the first attenuation part 1120, front hang plate 1130, the front guide plate of plate 1260 and above-described embodiment 1150th, rear guide plate 1160 is identical, and is omitted the description.
Barrier plate 1270 is for the ripples inside moon pool 1020 of decaying.
The figure of the experimental example for the flowing attenuating structure that Figure 12 is display Figure 11.The comparative example of the experimental example of Figure 12 and Figure 10 phases Together.
With reference to Figure 11 and Figure 12, the experimental example for flowing attenuating structure 1200 of the present embodiment is internally provided with moon pool 1020 In, it is different from Figure 10, it is able to confirm that in frequency gamut, the up and down motion inside moon pool 1020 is weaker.
Figure 13 is the figure of the flowing attenuating structure of display another embodiment of the present invention.With reference to Figure 13, attenuating structure is flowed 1300 include the second attenuation part 1310, the first attenuation part 1320, front hang plate 1330, the first barrier plate 1371 and second Barrier plate 1372.
The front side wall of second attenuation part 1310 moon pool 1020 opposite with second attenuation part 1310, which contacts, matches somebody with somebody Put.Also, the rear side wall of the first attenuation part 1320 moon pool 1020 opposite with first attenuation part 1320, which contacts, matches somebody with somebody Put.The situation, 1032 and first space 1033 of Part II space of Fig. 8 disappear.
Front hang plate 1330 is configured in the upside of the second attenuation part 1310, and is rearward tilted down.Incline in front Inclined plate 1330 is so that the ripples inside moon pool 1020 are decayed.
First barrier plate 1371 is arranged between the water surface inside moon pool 1020 and the first attenuation part 1320, and from moon pool 1020 rear side wall protrudes forwards.First barrier plate 1371 prevents from shaking inside moon pool 1020.
Second barrier plate 1372 is arranged on the water surface inside moon pool 1020, is dashed forward forwards from the rear side wall of moon pool 1020 Go out.Second barrier plate 1372 prevents from shaking inside moon pool 1020.
The figure of the experimental example for the flowing attenuating structure that Figure 14 is display Figure 13.The comparative example of the experimental example of Figure 14 and Figure 10 phases Together.
With reference to Figure 13 and Figure 14, the experimental example for flowing attenuating structure 1300 of the present embodiment is internally provided with moon pool 1020 In, it is different from Figure 10, it is able to confirm that in frequency gamut, the up and down motion inside moon pool 1020 is weaker.
To sum up, the embodiment of the present invention is have studied, and it should be understood by one skilled in the art that except described above Embodiment outside, can also have in the case where not departing from spirit of the invention or scope by other particular forms Body.Therefore, the above embodiments are not intended to limit, and are illustrative for, and thus, the present invention is not limited to above-mentioned say It is bright, also can in right and equivalency range make a change.
Description of reference numerals
50：Offshore structure 60：Fore
70：Stern 80：The bottom surface of offshore structure
100：Moon pool 110：First space
120：Second space 130：Offset space
200：First attenuation part 210：Above
220：Bottom surface 230：Simultaneously
240：Another side 300：Guide member
300a：The bottom surface D of guide member：Deck
H1：There is no height H2 during the first attenuation part：There are height during the first attenuation part
h1：The height h2 of moon pool：The height of first attenuation part
L：The length L1 of moon pool：To the length of the one side of the first attenuation part
L2：To the length θ 1 of the another side of the first attenuation part：The inclination angle of first attenuation part
θ2：The inclination angle of guide member
1001：Offshore structure 1010：Hull
1020：Moon pool 1100：Flow attenuating structure
1110：Second attenuation part 1120：First attenuation part
1130：Front hang plate 1140：Back sweep plate
1150：Front guide plate
1160：Rear guide plate
1170：Tilt chunking

Claims (14)

  1. A kind of 1. offshore structure, it is characterised in that including：
    Hull, formed with moon pool；And
    Flow attenuating structure so that the flowing inside moon pool decays,
    The flowing attenuating structure includes the first attenuation part, and first attenuation part is protruded by the bottom of the offshore structure Formed to the moon pool, and the first space and second space will be divided into inside the moon pool.
  2. 2. offshore structure according to claim 1, it is characterised in that
    First space is formed at the stern-side of the offshore structure, and the second space is formed at the ship of the offshore structure Rostral,
    The length of the second space is longer than the length in first space.
  3. 3. offshore structure according to claim 1, it is characterised in that
    The height of first attenuation part is lower than the height of the moon pool, is formed mutually on the top of first attenuation part Offset the counteracting space of the seawater flowed into by first space and the second space.
  4. 4. offshore structure according to claim 1, it is characterised in that
    First attenuation part is formed slopely with the one side that first space is connected, first attenuation part and described the The another side that two spaces are connected is parallel with the medial surface of the moon pool.
  5. 5. offshore structure according to claim 4, it is characterised in that
    The one side of first attenuation part is nearer with the distance of the another side more from above toward bottom surface.
  6. 6. offshore structure according to claim 3, it is characterised in that further include：
    Guide member, is protruded by the deck of the offshore structure and is formed to the moon pool, and guides the flow direction of seawater, So that the seawater for flowing into first space flows to the counteracting space.
  7. 7. offshore structure according to claim 6, it is characterised in that
    The guide member gets over the medial surface from the moon pool toward the end of the moon pool, is inclined upwardly to be formed.
  8. 8. offshore structure according to claim 1, it is characterised in that further include：
    Second attenuation part, is protruded by the bottom of the offshore structure and is formed to the moon pool, and is decayed with described first Component is separated to form, and the second space is divided into Part I space and Part II space.
  9. 9. offshore structure according to claim 8, it is characterised in that
    The Part I space configuration between first space and the Part II space,
    The length in the Part I space is longer than the length of the second space, and than the length in the Part II space It is long.
  10. 10. offshore structure according to claim 8, it is characterised in that
    The flowing attenuating structure includes：
    Back sweep plate, configures in the upside of first attenuation part, and tilts down forwards；
    Front hang plate, configures in the upside of second attenuation part, and rearward tilts down.
  11. 11. the offshore structure according to claim 8 or 10, it is characterised in that further include：
    Rear guide plate, between the water surface being arranged on inside the moon pool and first attenuation part, and after the moon pool Square side wall protrudes forwards；
    Front guide plate, between the water surface being arranged on inside the moon pool and second attenuation part, and before the moon pool Square side wall rearward protrudes.
  12. 12. the offshore structure according to claim 8 or 10, it is characterised in that further include：
    Tilt chunking, configure the front sidepiece in first attenuation part, and formed with towards the front hang plate and to Upper inclined front end face.
  13. 13. offshore structure according to claim 9, it is characterised in that
    The flowing attenuating structure further includes：
    Front hang plate, configures in the upside of second attenuation part, and rearward tilts down；
    Front guide plate, between the water surface being arranged on inside the moon pool and second attenuation part, and before the moon pool Square side wall rearward protrudes；
    Rear guide plate, between the water surface being arranged on inside the moon pool and first attenuation part, and after the moon pool Square side wall protrudes forwards；With
    Barrier plate, between the water surface being arranged on inside the moon pool and the rear guide plate, and from the rear side wall of the moon pool It is prominent.
  14. A kind of 14. offshore structure, it is characterised in that including：
    Hull, formed with moon pool；And
    Flow attenuating structure so that the flowing inside moon pool decays,
    The flowing attenuating structure further includes：
    First attenuation part and the second attenuation part, mutually separate configuration；
    Front hang plate, configures in the upside of second attenuation part, and rearward tilts down；
    First barrier plate, between the water surface being arranged on inside the moon pool and first attenuation part, and by the moon pool Rear side wall protrudes forwards；
    Second barrier plate, is arranged on the water surface inside the moon pool, and is protruded forwards by the rear side wall of the moon pool,
    The front side wall of second attenuation part moon pool opposite with second attenuation part contacts configuration, and described The rear side wall of the one attenuation part moon pool opposite with first attenuation part contacts configuration.
CN201680053603.5A 2015-09-15 2016-09-13 Offshore structure comprising flow attenuating structure Active CN108025800B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2015-0130007 2015-09-15
KR1020150130007A KR101762700B1 (en) 2015-09-15 2015-09-15 Drillship
PCT/KR2016/010341 WO2017048055A1 (en) 2015-09-15 2016-09-13 Offshore construction comprising flow attenuation structure

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CN108025800A true CN108025800A (en) 2018-05-11
CN108025800B CN108025800B (en) 2020-06-23

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KR (1) KR101762700B1 (en)
CN (1) CN108025800B (en)
SG (1) SG11201801972TA (en)
WO (1) WO2017048055A1 (en)

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KR20130066019A (en) * 2011-12-12 2013-06-20 현대중공업 주식회사 Flowing reduction apparatus of moon-pool structures of drill ship
KR101516207B1 (en) * 2013-11-29 2015-05-04 삼성중공업 주식회사 Impact absorbing apparatus of mousehole

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JP2003072672A (en) * 2001-09-05 2003-03-12 Mitsubishi Heavy Ind Ltd Sea water intake part structure for ship
JP2005199938A (en) * 2004-01-16 2005-07-28 Mitsubishi Heavy Ind Ltd Floating structure with moon pool
CN102196960A (en) * 2008-10-27 2011-09-21 三星重工业株式会社 Moon pool and drillship comprising same
KR20100004790U (en) * 2008-10-30 2010-05-11 대우조선해양 주식회사 Apparatus for restraining the flow attached in a moonpool and ship having the apparatus
KR20110027404A (en) * 2009-09-10 2011-03-16 삼성중공업 주식회사 Floating marine structure
KR20110042701A (en) * 2009-10-20 2011-04-27 대우조선해양 주식회사 Moon pool having anti-flow device
KR20120134349A (en) * 2011-06-02 2012-12-12 현대중공업 주식회사 Drillship having open cavity for controlling upstrem flowing to concave type flow stabilizer part
KR101259718B1 (en) * 2011-06-14 2013-04-30 현대중공업 주식회사 Drillship with combining form of moonpool structure considering additional resistance control
KR20130066019A (en) * 2011-12-12 2013-06-20 현대중공업 주식회사 Flowing reduction apparatus of moon-pool structures of drill ship
KR101516207B1 (en) * 2013-11-29 2015-05-04 삼성중공업 주식회사 Impact absorbing apparatus of mousehole

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WO2017048055A1 (en) 2017-03-23
KR20170032548A (en) 2017-03-23
SG11201801972TA (en) 2018-04-27
KR101762700B1 (en) 2017-07-28
CN108025800B (en) 2020-06-23

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