CN105584586A - Small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers - Google Patents
Small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers Download PDFInfo
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- CN105584586A CN105584586A CN201610130646.0A CN201610130646A CN105584586A CN 105584586 A CN105584586 A CN 105584586A CN 201610130646 A CN201610130646 A CN 201610130646A CN 105584586 A CN105584586 A CN 105584586A
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Classifications
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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
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
- B63B1/08—Shape of aft part
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
Abstract
The invention relates to a small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers. The line style of the tail structure is a longitudinal flow type tail line style; an integrated water diversion heel is arranged at the stern, the pull type propellers are fixedly arranged at the two sides of the integrated water diversion heel respectively, and the pull type propellers are controlled in a 360-degree full-circle-swinging mode in a horizontal plane; the tail line style is of a horizontal line style structure at the mounting positions of the pull type propellers; the pull type propellers are mounted in a mode of extending outward by 2 degrees in the horizontal direction and extending downward by 1 degree in the longitudinal direction. By means of the small-size LNG transport ship tail structure, maneuverability of a ship is greatly improved, excellent maneuverability can be achieved even at the zero navigational speed, independence of a towboat can be achieved in the aspect of maneuverability when the ship enters and leaves a port, and work of getting close to or leaving the port is completed independently; compared with conventional push type full-circle-swinging propellers, the pull type propellers are higher in propelling efficiency, thereby the disadvantage that a double-propeller ship is inferior to a single-propeller ship in propelling efficiency is well made up, high propelling efficiency is still maintained when the ship navigates on the sea, and economical efficiency is improved.
Description
Technical field
The present invention relates to a kind of small-sized LNG cargo ship tail structure that the pull-type oar of revolution advances of enjoying a double blessing, belong toSmall-sized LNG cargo ship technical field.
Background technology
Small-sized LNG cargo ship is generally used for two between extremely middle-size and small-size LNG receiving station of Large LNG receiving stationLevel transhipment, the feature of this transhipment is that voyage is shorter, dates of cruising is short; Transport than Large LNGDefeated ship entering and leaving port is more frequent, so the maneuvering performance of small-sized LNG ship has to closing heavy to its operating efficiencyThe impact of wanting. Affect a propelling side that greatest factor is exactly small-sized LNG cargo ship of operating characteristicsFormula, line type stern is mutually to mate with propulsion mode, specific propulsion mode must have specificallyLine type stern matches.
The propulsion mode that existing small-sized LNG shipowner wants is that single-blade axle system advances, and line type stern is that single-blade adoptsThe spacious water tail of stern transom plate, maneuverability aspect mainly relies on the rudder of afterbody. This line type stern maneuverability oneAs, the speed of a ship or plane is lower, and steerage is poorer, and maneuvering performance is also just poorer. , ship speed is very low when the entering and leaving port,Single-blade LNG cargo ship maneuverability is poor, and entering and leaving port efficiency is lower, mainly relies on towboat auxiliary.
Existing small-sized LNG cargo ship line type stern fail to consider Ship Maneuverability this important because ofElement, specifically: the small-sized LNG cargo ship maneuvering performance that single-blade axle system advances mainly relies on after screwRudder, under the low speed of a ship or plane, steerage is very low, under 0 speed of a ship or plane, just there is no steerage. But small-sized LNGThe common voyage of cargo ship is shorter, and entering and leaving port is more frequent, and maneuvering performance is extremely important. The entering and leaving port speed of a ship or planeAll lower, so common small-sized LNG cargo ship entering and leaving port need to rely on towboat. So not only increaseThe expense of towboat, has also affected the efficiency of entering and leaving port, has caused cost increase, and economy declines.
Summary of the invention
The technical issues that need to address of the present invention are: the propulsion mode that existing small-sized LNG shipowner wants is single-bladeAxle system advances, and line type stern is the spacious water tail that single-blade adopts stern transom plate, and maneuverability aspect mainly relies on tailThe rudder of portion. This line type stern maneuverability is general, and the speed of a ship or plane is lower, and steerage is poorer, and maneuvering performance alsoPoorer. , ship speed is very low when the entering and leaving port, single-blade LNG cargo ship maneuverability extreme difference, and entering and leaving port efficiency isLow, mainly rely on towboat auxiliary, so not only increase the expense of towboat, also affect entering and leaving portEfficiency, has caused cost increase, and economy declines; And the common voyage of small-sized LNG cargo ship is shorter, enterLeave the port more frequent, maneuvering performance is extremely important. Therefore, the maneuverability problem of small-sized LNG ship becomesFor a puzzlement greatly of this area, it is technical barrier urgently to be resolved hurrily.
The present invention takes following technical scheme:
Small-sized LNG cargo ship is enjoyed a double blessing and is turned round the tail structure that pull-type oar advances, described tail structureLine style be vertical flow pattern line type stern; Ship stern place is provided with integral type and divides water heel, and described integral type is divided water heelBoth sides are fixedly installed pull-type screw separately, and described pull-type screw is 360 ° of full circle swinging behaviour in horizontal planeControl; Described line type stern is horizontal linear structure in pull-type screw installation place; Described pull-type screwBe in the horizontal direction outside 2 ° of installations; Be downward 1 ° of installation at longitudinal direction.
Further, described integral type divides water heel to be also provided with sideways-acting propeller, further strengthens turning to behaviourControl performance.
Further, the small-sized LNG cargo ship of described kind is to middle-size and small-size LNG for Large LNG receiving stationThe boats and ships of the secondary transhipment between receiving station.
Beneficial effect of the present invention is:
1) short for voyage, entering and leaving port is small-sized LNG ship frequently, greatly reduces manipulation difficulty,Maneuvering performance is outstanding, avoids using towboat, and entering and leaving port efficiency significantly improves;
2) solved small-sized LNG ship for a long time, the technical barrier of handling short slab, has eliminated puzzlement,That the large innovation of small-sized LNG ship design field one breaks through.
3) overcome small-sized LNG ship and can adopt single-blade axle system to advance, line type stern employing stern transom plateThe technology prejudice of spacious water tail.
4) line type stern has adopted vertical flow pattern Alignment Design, has reserved fully to come in angle of rake frontFluid space, has improved the propulsive efficiency of pull-type oar.
5) in ship, design integral type and divided water heel, ensured shipping-direction stability, avoided oar flow field, left and rightBetween phase mutual interference.
6) line type stern has adopted the Alignment Design of horizontal in the installation position of all-direction propeller, justIn angle of rake installation.
7) all-direction propeller is outside 2 ° of angles installation in the horizontal direction, and all-direction propeller is verticalInstall to being downward 1 ° of angle, be applicable to the flow field of small-sized LNG quarter line style, improved pull-type oarPropulsive efficiency.
8) obviously do not increase cost, comprehensive economy is high, has the prospect of wide popularization and application.
Brief description of the drawings
Fig. 1 is the small-sized LNG cargo ship line type stern side view that the pull-type oar of revolution advances of enjoying a double blessing.
Fig. 2 is the small-sized LNG cargo ship line type stern sectional elevation that the pull-type oar of revolution advances of enjoying a double blessing.
Fig. 3 be small-sized LNG cargo ship enjoy a double blessing revolution pull-type oar horizontal view.
Fig. 4 be small-sized LNG cargo ship enjoy a double blessing revolution pull-type oar side view.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Referring to Fig. 1-Fig. 4, a kind of small-sized LNG cargo ship is enjoyed a double blessing and is turned round the tail structure that pull-type oar advances,The line style of described tail structure is vertical flow pattern line type stern; Ship stern place is provided with integral type and divides water heel, described inIntegral type divides water heel both sides to be fixedly installed separately pull-type screw, and described pull-type screw is in horizontal plane360 ° of full circle swinging manipulations; Described line type stern is horizontal linear structure in pull-type screw installation place; InstituteState pull-type screw and be in the horizontal direction outside 2 ° of installations; Be downward 1 ° of installation at longitudinal direction.
Referring to Fig. 2-Fig. 4, described integral type divides water heel to be also provided with sideways-acting propeller, further strengthens turningTo handling.
The small-sized LNG cargo ship of described kind be for Large LNG receiving station to middle-size and small-size LNG receiving station itBetween the boats and ships of secondary transhipment.
The present invention is short for voyage, and entering and leaving port is small-sized LNG ship frequently, greatly reduces manipulationDifficulty, has improved handling, avoids using towboat, and entering and leaving port efficiency significantly improves; Solve littleFor a long time, the technical barrier of handling short slab, has eliminated puzzlement to type LNG ship, is small-sized LNG shipThe large innovation of design field one breaks through; Overcome small-sized LNG ship and can adopt single-blade axle system to advance, afterbodyLine style adopts the technology prejudice of the spacious water tail of stern transom plate; Line type stern has adopted vertical flow pattern Alignment Design,Reserve fluid space fully in angle of rake front, improved the propulsive efficiency of pull-type oar; At shipIn the integral type shipping-direction stability of dividing water heel to ensure boats and ships, avoided the flow field of left-and-right spiral oar dryDisturb; In ship, designed integral type and divided water heel, layout can better adapt to afterbody incoming flow like this, increasesThe propulsive efficiency of screw; Line type stern has adopted horizontal in the installation position of all-direction propellerAlignment Design, is convenient to angle of rake installation; All-direction propeller is outside 2 ° of angles peace in the horizontal directionDress, all-direction propeller, being longitudinally downward 1 ° of angle installation, has been applicable to small-sized LNG quarter line styleFlow field, improved the propulsive efficiency of pull-type oar.
The present invention is a kind of line type stern of the pull-type oar propulsion mode of revolution that has been applicable to enjoying a double blessing, first thisLine style is the line type stern of gyratory paddle of enjoying a double blessing, and has greatly improved the maneuvering performance of boats and ships, even at 0 speed of a ship or planeUnder also have outstanding maneuvering performance,, do not rely on can accomplish aspect maneuvering performance when the entering and leaving portTowboat, completes the work by departure from port voluntarily; Secondly this line style has been applicable to the propulsion mode of pull-type oar,The propulsive efficiency of pull-type oar is higher than conventional pushing-type full circle swinging oar efficiency, has so just well made upR Zweier not as the inferior position of single-blade ship, still keeps higher pushing away in propulsive efficiency while riding the seaEnter efficiency, improved economy.
Claims (3)
1. small-sized LNG cargo ship is enjoyed a double blessing and is turned round the tail structure that pull-type oar advances, and it is characterized in that:
The line style of described tail structure is vertical flow pattern line type stern;
Ship stern place is provided with integral type and divides water heel, and described integral type divides water heel both sides to be fixedly installed separatelyPull-type screw, described pull-type screw is 360 ° of full circle swinging manipulations in horizontal plane;
Described line type stern is horizontal linear structure in pull-type screw installation place;
Described pull-type screw is outside 2 ° of installations in the horizontal direction; Be downward at longitudinal direction1 ° of installation.
2. type LNG cargo ship as claimed in claim 1 is enjoyed a double blessing and is turned round the tail structure that pull-type oar advances,It is characterized in that: described integral type divides water heel to be also provided with sideways-acting propeller, further strengthens turning toHandling.
3. type LNG cargo ship as claimed in claim 1 is enjoyed a double blessing and is turned round the tail structure that pull-type oar advances,It is characterized in that: the small-sized LNG cargo ship of described kind is to middle-size and small-size for Large LNG receiving stationThe boats and ships of the secondary transhipment between LNG receiving station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130646.0A CN105584586A (en) | 2016-03-08 | 2016-03-08 | Small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130646.0A CN105584586A (en) | 2016-03-08 | 2016-03-08 | Small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers |
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| CN105584586A true CN105584586A (en) | 2016-05-18 |
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| CN201610130646.0A Pending CN105584586A (en) | 2016-03-08 | 2016-03-08 | Small-size LNG transport ship tail structure propelled by double full-circle-swinging rotary pull type propellers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352008A (en) * | 2016-09-19 | 2017-11-17 | 北车船舶与海洋工程发展有限公司 | A kind of pull-type constant pitch airscrew of new gondola |
| CN113646230A (en) * | 2019-07-25 | 2021-11-12 | 川崎重工业株式会社 | Tail fin |
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| CN203864922U (en) * | 2013-10-18 | 2014-10-08 | 重庆新世纪游轮股份有限公司 | Inland river cruise tail structure with deadwood |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352008A (en) * | 2016-09-19 | 2017-11-17 | 北车船舶与海洋工程发展有限公司 | A kind of pull-type constant pitch airscrew of new gondola |
| CN113646230A (en) * | 2019-07-25 | 2021-11-12 | 川崎重工业株式会社 | Tail fin |
| CN113646230B (en) * | 2019-07-25 | 2024-04-09 | 川崎重工业株式会社 | Stern fin |
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Application publication date: 20160518 |