CN202320713U - Hull form for ocean engineering ship - Google Patents
Hull form for ocean engineering ship Download PDFInfo
- Publication number
- CN202320713U CN202320713U CN2011203964439U CN201120396443U CN202320713U CN 202320713 U CN202320713 U CN 202320713U CN 2011203964439 U CN2011203964439 U CN 2011203964439U CN 201120396443 U CN201120396443 U CN 201120396443U CN 202320713 U CN202320713 U CN 202320713U
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- ship
- ocean engineering
- line style
- bilge
- hull form
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Abstract
The utility model discloses a hull form for an ocean engineering ship. The head of the engineering ship is provided with a forward-inclined turtle shell type bulbous bow; the bulbous bow is provided with a peach-pit-shaped cross section and an approximately-V-shaped forebody; the head hull is in smooth transition from head shoulders to a midship; beveled bilges are formed at the bottom of the middle section of the ship, and the beveled bilges gradually make transition to circular bilges respectively at the head section of the ship and the tail section of the ship in the longitudinal direction; large-sized triangular box-shaped bilge keels are arranged at the two sides of the beveled bilges at the bottom of the middle section of the ship; and the middle tail part of the ship is of a bottom longitudinal flow barge type hull form of which the bottom warps upwards linearly. The hull form for the ocean engineering ship has the advantages that the requirements of the ocean engineering ship on energy saving and environmental protection are met, and meanwhile, the amplitude values of the ocean engineering ship in response to unavoidable terrible weathers and ocean environments are effectively reduced, so that the hull form for the ocean engineering ship has excellent fluid dynamics performance, the resistance is reduced by 19%, the cruising speed is increased by 0.5 knot, and the hull form for the ocean engineering ship has the characteristics of safety and reliability.
Description
Technical field
The utility model relates to the ocean engineering vehicle technical field, particularly relates to a kind of line style of ocean engineering vehicle.
Background technology
The task of ocean engineering vehicle is that deep-sea offshore platform and auxiliary vessel provide and throw the anchor operation; Traction, shift operation; Be stores such as offshore platform supply bore mud, cement, drilling well water, fuel oil, fresh water, and undertake guard, tasks such as fire-fighting, relief.
The deep-sea offshore platform is in the high marine environment that the wave is high of wind throughout the year, and its design-calculated external environment condition is to be basis with its life condition, promptly examines with the harsh outer masterpiece of 50 years, 100 years even 10000 years certain probability.Though need not to consider so harsh ring mirror as the novel sea auxiliary vessel of serving the deep-sea offshore platform; But also before high sea arrives, can change course or wind sheltering, be difficult to avoid as the service boats and ships violent winds and fierce waves-grave perils of awaiting orders, recovering unlike marine transport.As middle-size and small-size novel sea auxiliary vessel, from economical or get involved the consideration of the degree of depth, unlikelyly will occupy the scope that suitable volume of compartment amount or the expensive passive antirolling tank of master or stabilizer are included application engineering in, also so do usually in the world.Being the operational capability that improves in the stormy waves mainly sets about from line style optimization.
Ocean engineering vehicle will be accomplished not who performance of energy-saving and environment friendly and rough water quality; Have only on the basis of satisfying the bitt towing tension; Dispose as far as possible little tractive power and obtain maximum speed on this basis; Line style should satisfy the maximization of antirolling apparatus-bilge keel simultaneously, pays close attention to the good influence of line style characteristic to rough water quality, and this all is international question of common concern.
The utility model content
The purpose of the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of line style of ocean engineering vehicle is provided, and on the basis of satisfying the bitt towing tension, disposes as far as possible little tractive power and obtains maximum speed on this basis; Simultaneously line style should satisfy the maximization of antirolling apparatus-bilge keel, and the line style characteristic is to the good influence of rough water quality, and the bilge keel characteristic that matches therewith makes the rough water quality of ship be able to obviously improve and its structure has guaranteed that the reliability in the stormy waves increases.
The technical solution of the utility model is following:
A kind of line style of ocean engineering vehicle, its characteristics are: the stem band of this project ship curvature of the spinal column formula ball that leans forward is first, and ball head has peach-pit type bench section, V-type precursor partially, the optimization that the stem line style is paid close attention to design load water line makes stem, first shoulder to ship midship form smooth transition; Knuckle type bilge is processed in the bottom, stage casing of ship, and longitudinally carries out the transition to slack bulge gradually to bow section, stern section respectively, and the both sides of the knuckle type bilge of bottom, stage casing are provided with large triangle shape box bilge keel; The middle afterbody of ship adopts the end vertical stream barge molded lines type, and the bottom linear upwarps.
Described bilge keel has crash-resistant triangle box-structure, is made up of plate, round steel and reinforced rib, and this triangle box-structure is even same size box bilge keel is better than sheet type bilge keel stabilizing efficiency; And in fact knuckle type bilge keel is better than big 40% stabilizing efficiency of the common Bilge-Keel Width of slack bulge sheet type.
Compared with prior art, the technique effect of the utility model:
1, the line style of the utility model ocean engineering boats and ships had both satisfied the demand of ocean engineering boats and ships in energy-conserving and environment-protective, had obtained than the similar maritime works's ship of external design-calculated better energy-saving effect; Can need account for the compact volume of compartment of middle-size and small-size maritime works's ship but also quite under the prerequisite of expensive ' antirolling apparatus ', reduced ocean engineering vehicle effectively and kept away the unavoidable abominable meteorology and the response amplitude of marine environment not being provided with not only.This conclusion and software for calculation analog result match and also obtain tank experiment result's confirmation.
2, the line style of the utility model ocean engineering boats and ships cuts turn of the bilge formation knuckle line bilge and also the head and the tail of this bilge is carried out the transition to slack bulge to head and the tail gradually in the bottom, stage casing of ship; On described knuckle line bilge both sides, mix triangle box bilge keel; Fact proved that the domestic unprecedented design of this uniqueness can have good flow dynamics, more the employing of ultra-large type box bilge keel becomes possibility; The fact has proved that also triangle box bilge keel is safe and reliable more than common " sheet shape bilge keel " in the violent storm and roaring waves of deep-sea, ocean, and various seakeepings and wave are to roll and pitch etc. there is the improvement more than 6.5% under the same size prerequisite.The scientific combination of this line style and box bilge keel has increased the ship rolling damping effectively through the tank experiment proof, has reduced the amplitude that boats and ships wave in wave.
3, experiment shows that the line style of the utility model ocean engineering boats and ships makes resistance reduce 19%, and the speed of a ship or plane has improved 0.5 joint.
4, the optimal design of the utility model bilge keel makes the rough water quality of ship improve 6.5% approximately.Consider that the box bilge keel does greatly by 40% than conventional sheet type bilge keel, estimate that rough water quality can improve 17% approximately.
Description of drawings
Fig. 1 is the block diagram of the line style of the utility model ocean engineering vehicle.
Fig. 2 is the lateral plan of the line style of the utility model ocean engineering vehicle.
Fig. 3 is the waterplane figure of the line style of the utility model ocean engineering vehicle.
Fig. 4 is the drawing in side sectional elevation of the line style of the utility model ocean engineering vehicle.
Fig. 5 is the lateral side view of the line style of the utility model ocean engineering vehicle.
Fig. 6 is conventional bilge keel and box bilge keel roll frequency response curve.
Fig. 7 is conventional bilge keel and box bilge keel rolling significant valve φ 1/3 (o).
Fig. 8 is the line style comparison diagram of first shoulder prototype of design load water line and smooth transition remodeling.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further described, but should limit the protection domain of the utility model with this.
Please consult Fig. 1-Fig. 5 earlier; Fig. 1 is the block diagram of the line style of the utility model ocean engineering vehicle; Fig. 2 is the lateral plan of the line style of the utility model ocean engineering vehicle; Fig. 3 is the waterplane figure of the line style of the utility model ocean engineering vehicle, and Fig. 4 is the drawing in side sectional elevation of the line style of the utility model ocean engineering vehicle, and Fig. 5 is the lateral side view of the line style of the utility model ocean engineering vehicle.As shown in the figure, a kind of line style of ocean engineering vehicle, the stem band of this project ship curvature of the spinal column formula ball that leans forward is first, and ball head has peach-pit type bench section, V-type precursor partially, stem line style shoulder to the ship midship of confessing one's crime forms smooth transition; Knuckle type bilge is processed in the bottom, stage casing of ship, and longitudinally carries out the transition to slack bulge gradually to bow section, stern section respectively, and the both sides of the knuckle type bilge of bottom, stage casing are provided with large triangle shape box bilge keel; The middle afterbody of ship adopts the end vertical stream barge molded lines type, and the bottom linear upwarps.Bilge keel has crash-resistant triangle box-structure, is made up of plate, round steel and reinforced rib.
The utility model ocean engineering vehicle linear optimization design is on existing both at home and abroad maritime works's name of vessel ship type of in-depth study and development tendency basis thereof, and fully Application of CAD three-dimensional computer aided design and CFD computational fluid mechanics business software are carried out multivariant comparison.From multivariant comparison of each ship type scheme pressure distribution chart, wave making Wave Height Distribution cloud atlas and drag calculation value and to each line style scheme parameter value especially to rough water quality in the stormy waves have shadow to parameter like: diamond pattern coefficient (Cp), vertical diamond pattern coefficient (Cwp), displacement length coefficient (Δ/(L/100)
3), select preferred version on the contrast bases such as distance between the centre of floatation and centre of buoyancy.
To select the line style scheme and compare with external ship type scheme once more, attempt with immersion type ball head change into the large ball games of exposed type inclination curvature of the spinal column formula first and make the first outermost section of ball than the little 915mm of outermost section of ship to ensure safety; Also attempt changing contrary flexure type afterbody bottom shell plate into the linear pattern bottom shell plate.Calculate through CFD, find that binomial improves effectively, just alignment type scheme is carried out model experiment immediately.
Just decide the model experiment and the CFD result of calculation basically identical of scheme, find that exactly first shoulder ripple is bigger when the ship model high-speed travel.Further first shoulder line style is improved, the improvement of this part launches round the curve shape of the first shoulder of design load water line for this reason.Though prototype stem influent stream angle is less,, cause the curvature of first shoulder evagination excessive because the stem contrary flexure is spent greatly; Wave making is serious; The slow outer convex curvature of first shoulder that makes is fallen in the stem contrary flexure for this reason and reduce to 29 degree, make stem to ship midship that a pulsation-free transition arranged, referring to Fig. 8 by 39 original degree.Change the back line style and calculate through the CFD contrast once more, find to improve effectively.Carry out the model experiment second time subsequently, finding improves to some extent to the shoulder ripple really just confirms as the final optimization pass scheme.
The optimization of antirolling apparatus-bilge keel starts from the ocean engineering vehicle linear design.Promptly to the aforesaid displacement normal manner of the relevant performance figure of rough water quality coefficient (Δ/(L/100)
3), the distance between diamond pattern coefficient (Cp), vertical diamond pattern coefficient (Cwp), the centre of floatation and centre of buoyancy, vertically radius of gyration, ball is first and divide the size that water calls in person, the UV degree of line style etc. to compare as the focus of line style optimization.The particularly important is the bilge processing is cut in the line style stage casing, promptly be retrofit into the knuckle bilge, make the large-scale bilge keel of device become possibility by original slack bulge.
The optimization of bilge keel mainly draws through more conventional bilge keel and the seakeeping test of box bilge keel in regular wave.The content of tank experiment comprises designed draft zero speed of a ship or plane box bilge keel (1 scheme) and the test of conventional bilge keel (2 scheme) athwart sea regular wave.The box bilge keel carries out 135 ° of bow seas and 45 ° of tail oblique wave regular wave tests, has measured roll and pitch; Head sea experimental measurement wave drag increase, pitching, hang down swing and first, in, 3 acceleration/accels of tail, by the frequency response curve that records, forecast rough water quality each item index of ship with the two-parameter POP of ITTC, referring to Fig. 6 and Fig. 7.
The results showed that the line style of the utility model ocean engineering boats and ships makes resistance reduce 19%, the speed of a ship or plane has improved 0.5 joint, and rough water quality can improve 17%, and bigger application prospect is arranged on ocean engineering vehicle.
Claims (2)
1. the line style of an ocean engineering vehicle is characterized in that: the stem band of this project ship curvature of the spinal column formula ball that leans forward is first, V-type precursor partially, and stem line style shoulder to the ship midship of confessing one's crime forms smooth transition; Knuckle type bilge is processed in the bottom, stage casing of ship, and longitudinally carries out the transition to slack bulge gradually to bow section, stern section respectively, and the both sides of the knuckle type bilge of bottom, stage casing are provided with large triangle shape box bilge keel; The middle afterbody of ship adopts the end vertical stream barge molded lines type, and the bottom linear upwarps.
2. the line style of ocean engineering vehicle according to claim 1, it is characterized in that: described bilge keel has crash-resistant triangle box-structure, is made up of plate, round steel and reinforced rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964439U CN202320713U (en) | 2011-10-18 | 2011-10-18 | Hull form for ocean engineering ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203964439U CN202320713U (en) | 2011-10-18 | 2011-10-18 | Hull form for ocean engineering ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202320713U true CN202320713U (en) | 2012-07-11 |
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ID=46432703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203964439U Expired - Fee Related CN202320713U (en) | 2011-10-18 | 2011-10-18 | Hull form for ocean engineering ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202320713U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407917A (en) * | 2011-10-18 | 2012-04-11 | 上海斯迪安船舶设计有限公司 | Outline of oceanographic engineering ship |
| CN102923244A (en) * | 2012-11-20 | 2013-02-13 | 江苏科技大学 | Ship line with stern transom plate and balanced rudder blade designing method |
| CN110550142A (en) * | 2019-04-30 | 2019-12-10 | 上海外高桥造船有限公司 | Hull line type of large liquefied gas carrier |
-
2011
- 2011-10-18 CN CN2011203964439U patent/CN202320713U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407917A (en) * | 2011-10-18 | 2012-04-11 | 上海斯迪安船舶设计有限公司 | Outline of oceanographic engineering ship |
| CN102923244A (en) * | 2012-11-20 | 2013-02-13 | 江苏科技大学 | Ship line with stern transom plate and balanced rudder blade designing method |
| CN102923244B (en) * | 2012-11-20 | 2015-01-21 | 江苏科技大学 | Ship line with stern transom plate and balanced rudder blade designing method |
| CN110550142A (en) * | 2019-04-30 | 2019-12-10 | 上海外高桥造船有限公司 | Hull line type of large liquefied gas carrier |
| CN110550142B (en) * | 2019-04-30 | 2021-04-27 | 上海外高桥造船有限公司 | Hull line type of large liquefied gas carrier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141018 |
|
| EXPY | Termination of patent right or utility model |