CN204548430U - A kind of moon pool structure of marine oil field operation boats and ships - Google Patents
A kind of moon pool structure of marine oil field operation boats and ships Download PDFInfo
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- CN204548430U CN204548430U CN201520130752.XU CN201520130752U CN204548430U CN 204548430 U CN204548430 U CN 204548430U CN 201520130752 U CN201520130752 U CN 201520130752U CN 204548430 U CN204548430 U CN 204548430U
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- moon pool
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- oil field
- marine oil
- field operation
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Abstract
The utility model relates to a kind of marine oil field operation boats and ships, particularly relates to a kind of moon pool structure of marine oil field operation boats and ships, belongs to marine oil field operation technical field of ships.A moon pool structure for marine oil field operation boats and ships, is characterized in that: the cross-sectional plane of described moon pool is the square structure of 7.2*7.2m; Described moon pool lower ending opening is on the corner arc-shaped structure; The radius of described arc-shaped structure is 700mm.By changing moon pool lower ending opening form on the corner, setting up turn circle being beneficial to submerged flow field, corner angular flux speed can be changed, slow down and the resistance of hull is increased.Moon pool form of the present utility model, by turning round opening form test with 3 kinds of yardsticks, the drag-reduction effect that the result data display obtained is clearer and more definite, by one times of aggregate spacing, namely during R=700mm, arrange to turn circle opening drag-reduction effect optimum, in there is obvious energy-conservation of consumption reduction advantage under low service speed.
Description
Technical field
The utility model relates to a kind of marine oil field operation boats and ships, particularly relates to a kind of moon pool structure of marine oil field operation boats and ships, belongs to marine oil field operation technical field of ships.
Background technology
In order to realize oil field prospecting exploitation in ocean, need on ocean engineering ship, configure various subsea equipment, these equipment requirements can operate above deck, and sensiblely can enter below the water surface until seabed, this just needs a maritime passage that can run through main body, and have enough large size, so that meet the demand of distinct device operation.Current moon pool is to meet the requirement of under-water operation equipment out to out for main flow, wherein in the majority with the standard size of 7.2x7.2 rice.The setting party of moon pool the carrying out of under-water operation, but add adverse effect to ship's navigation, moon pool, because leading to seawater, because phenomenon is agitated in ship's navigation and waves of seawater motion generation, can add resistance during ship's navigation.Current most moon pool design, lower ending opening is right-angled corner form, adds bottom and without bottom two kinds.The moon pool form of bottom is set, adopts less.Moon pool without bottom is right angle intersection form, is unfavorable for reducing ship resistance.
Utility model content
Current boats and ships are the moon pool that under-water operation is arranged, larger to the resistance increase of ship's navigation, ripe specification is not had to do foundation in engineering practice, do not have ripe experience yet and theory can be used as guidance, particularly have an impact to resistance the lower ending opening form of most critical, there is no investigation and comparison and demonstration, design and form numerous.
The purpose of this utility model main purpose is, by the result of verification experimental verification, excellent side selects case, obtain a kind of design of moon pool lower ending opening place of improvement, find and be a kind ofly conducive to most reducing running resistance and be convenient to again build and do not affect the optimised form of equipment under-water operation in moon pool.
The utility model takes following technical scheme:
A moon pool structure for marine oil field operation boats and ships, is characterized in that: the cross-sectional plane of described moon pool is the square structure of 7.2*7.2m; Described moon pool lower ending opening is on the corner arc-shaped structure; The radius of described arc-shaped structure is 700mm.
The technical program is for the standard-sized moon pool of 7.2*7.2m, the corner of the opening bottom its inwall is arranged to arc-shaped structure, and test according to reality, the arc radius of preferred 700mm, thus the better drag-reduction effect of circular arc-shaped corner obtained relative to right-angled corner and other radiuses, reduce tractive power, save energy consumption needed for ship's navigation.It is pointed out that about the impact of moon pool structure on running resistance in engineering practice, do not have ripe specification to do foundation, do not have ripe experience yet and theory can be used as guidance, and for moon pool lower ending opening form, prior art does not have investigation and comparison and demonstration, design and form numerous.
Described moon pool is bivalve damping cavity structure, and the inwall of described bivalve damping cavity structure is offered the water proof hole reducing current and rock, the gross area in described water proof hole is the 15%-45% of the inner wall area of bivalve damping cavity structure.
One times of aggregate spacing of described moon pool is 700mm.
Described water proof hole is rounded or oval.
Feature of the present utility model is:
1) running resistance of marine oil field operation boats and ships is greatly reduced.
2) without the need to arranging bottom end cover for moon pool, boats and ships use convenient.
3) the corner arc radius of preferred 700mm, reduces running resistance further.
4) one times of aggregate spacing is also arranged to 700mm, reduces moon pool and build difficulty, optimize moon pool structure design.
5) bivalve damping cavity structure is set, and on inwall, offers water proof hole, make current enter damping cavity inside, bivalve from water proof hole, reduce rocking of current, reduce running resistance further.
6) the rounded or ellipsoidal structure in water proof hole, is convenient to moon pool and builds.
Accompanying drawing explanation
Fig. 1 is the facade view of the moon pool structure of the utility model marine oil field operation boats and ships.As can be seen from the figure, current are full of bivalve damping cavity, and damping cavity bottom comers place, bivalve is circular arc.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
A moon pool structure for marine oil field operation boats and ships, is characterized in that: the cross-sectional plane of described moon pool is the square structure of 7.2*7.2m; Described moon pool lower ending opening is on the corner arc-shaped structure; The radius of described arc-shaped structure is 700mm.Described moon pool is bivalve damping cavity structure, and the inwall of described bivalve damping cavity structure is offered the water proof hole reducing current and rock, the gross area in described water proof hole is the 15%-45% of the inner wall area of bivalve damping cavity structure.One times of aggregate spacing of described moon pool is 700mm.Described water proof hole is rounded or oval.
See table:
Table one, identical (45% perforate) damping panel difference turns the comparative unit of radius of circle framework boats and ships motor power: %
More than be the standard openings size moon pool of 7.2*7.2m to cross-sectional plane, in the bottom circular arc bent angle situation of different radii, the water pool model experimental test of the ship's navigation power carried out.In upper table, Vs represents the speed of a ship or plane, and R2000, R1400, R700 represent the radius of circular arc-shaped corner respectively, and Pe is the effective horse power that trial ship reaches the speed of a ship or plane.
As visible in above chart, by changing moon pool lower ending opening form on the corner, setting up turn circle being beneficial to submerged flow field, corner angular flux speed can be changed, slow down and the resistance of hull is increased.The moon pool form of the design, by turning round opening form test with 3 kinds of yardsticks, the drag-reduction effect that the result data display obtained is clearer and more definite, by one times of aggregate spacing, namely during R=700mm, arrange to turn circle opening drag-reduction effect optimum, in there is obvious energy-conservation of consumption reduction advantage under low service speed.
Claims (4)
1. a moon pool structure for marine oil field operation boats and ships, is characterized in that: the cross-sectional plane of described moon pool is the square structure of 7.2*7.2m; Described moon pool lower ending opening is on the corner arc-shaped structure; The radius of described arc-shaped structure is 700mm.
2. the moon pool structure of marine oil field operation boats and ships as claimed in claim 1, it is characterized in that: described moon pool is bivalve damping cavity structure, the inwall of described bivalve damping cavity structure is offered the water proof hole reducing current and rock, the gross area in described water proof hole is the 15%-45% of the inner wall area of bivalve damping cavity structure.
3. the moon pool structure of marine oil field operation boats and ships as claimed in claim 1, is characterized in that: one times of aggregate spacing of described moon pool is 700mm.
4. the moon pool structure of marine oil field operation boats and ships as claimed in claim 2, is characterized in that: described water proof hole is rounded or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130752.XU CN204548430U (en) | 2015-03-06 | 2015-03-06 | A kind of moon pool structure of marine oil field operation boats and ships |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520130752.XU CN204548430U (en) | 2015-03-06 | 2015-03-06 | A kind of moon pool structure of marine oil field operation boats and ships |
Publications (1)
| Publication Number | Publication Date |
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| CN204548430U true CN204548430U (en) | 2015-08-12 |
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| CN201520130752.XU Active CN204548430U (en) | 2015-03-06 | 2015-03-06 | A kind of moon pool structure of marine oil field operation boats and ships |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724257A (en) * | 2015-03-06 | 2015-06-24 | 上海船舶研究设计院 | Moon pool structure of offshore oil field operation ship |
-
2015
- 2015-03-06 CN CN201520130752.XU patent/CN204548430U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724257A (en) * | 2015-03-06 | 2015-06-24 | 上海船舶研究设计院 | Moon pool structure of offshore oil field operation ship |
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| GR01 | Patent grant |