CN201300963Y - Bulbous bow twin-tail fin stern ship - Google Patents

Bulbous bow twin-tail fin stern ship Download PDF

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Publication number
CN201300963Y
CN201300963Y CNU2008201919653U CN200820191965U CN201300963Y CN 201300963 Y CN201300963 Y CN 201300963Y CN U2008201919653 U CNU2008201919653 U CN U2008201919653U CN 200820191965 U CN200820191965 U CN 200820191965U CN 201300963 Y CN201300963 Y CN 201300963Y
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CN
China
Prior art keywords
ship
stern
propeller
bossing
spiral
Prior art date
Application number
CNU2008201919653U
Other languages
Chinese (zh)
Inventor
严俊
范为
胡广宇
刘久军
Original Assignee
武昌船舶重工有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武昌船舶重工有限责任公司 filed Critical 武昌船舶重工有限责任公司
Priority to CNU2008201919653U priority Critical patent/CN201300963Y/en
Application granted granted Critical
Publication of CN201300963Y publication Critical patent/CN201300963Y/en

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Abstract

The utility model relates to the technical field of ship design, in particular to a bulbous bow twin-tail fin stern ship. A stern takes a conical protruded body as a bossing. A propeller is installed at the rear end of the bossing. The utility model is characterized in that a spiral open groove is arranged around the bossing, and the rotation direction of the spiral is opposite to the rotation direction of the propeller; the open groove gradually extends from the hull medium to the stern and is between the bossing and the ship bottom. When the propeller rotates inward, water flows through a spiral point, a rotating flow opposite to the rotation direction of the propeller is formed and the rotating flow flows to a propeller disk in form of helical surface. The utility model has the advantages that the circumferential induced velocity of the propeller is improved, the wake is even, the wake flow of the propeller is greatly improved, false stern is formed and the propulsion efficiency and the damping effect are improved.

Description

The first double tail fins stern of a kind of ball ship

Technical field

The utility model relates to the Ship Design Technology field, particularly the first double tail fins stern of ball ship.

Background technology

In the real work of ship design, utilize the molded lines of outstanding type ship or good serial ship type data by analysis, generate needed molded lines after the conversion usually.Satisfying on the basis of basic demand, considering various factors, carrying out the hatching shape of molded lines, the design of head and the tail shape.

The tail type of existing ship type is commonly used cruiser type tail, transom stern, ball tail and whirlpool tail, and various tail types respectively have merits and faults, can be respectively applied for different situations.Cruiser type tail uses the widest, and applicable to various boats and ships, transom stern generally is applicable to high speed army ship, and the ball tail is applicable to the single-blade ship, and the whirlpool tail is applicable to the wide shallow draught vessel in inland river.

The utility model content

Technical problem to be solved in the utility model provides the first double tail fins stern of a kind of ball ship, and it is applicable to medium-sized middling speed seagoing vessel, makes gear that good rapidity and energy-saving effect preferably be arranged.

For solving the problems of the technologies described above, the utility model proposes the asymmetric double tail fins stern of the first inward turning of a kind of ball ship, this stern type with a taper excrescence as shaft bossing, screw propeller is contained in its tail end, it is characterized in that, have a spiral open type groove around the described shaft bossing, spiral rotation direction is opposite with the screw propeller hand of rotation; Described open type groove is expanded by extending to the ship stern gradually in the ship, and is between shaft bossing and the hull bottom.Under screw propeller inward turning operating mode, the current spiral cave of flowing through forms the rotary water current opposite with screw propeller, and flows to the oar dish with the helical surface form.

As the technical scheme of optimizing, the parameters for shape characteristic of the ball head of the first double tail fins stern of described ball ship is: outstanding relatively length is 0.045 ± 10%, and depth of immersion is 0.45 ± 10% relatively, and the width ratio is 0.16 ± 10%, the area ratio is 0.095 ± 10%, and volume ratio is 0.0029 ± 10%.

The utility model proposes the first double tail fins stern of the asymmetric ball of a kind of inward turning ship, can improve the circumferential induction velocity of screw propeller, make wake even, also can improve propeller race greatly, form false tail, reach the effect that improves propulsion coefficient and vibration damping.In order to verify the effect of this molded lines, compare similar basic type ship of the same type, carried out the research of rapidity model experiment, achievement in research shows that this ship type is the outstanding and new ship type of Remarkable Energy Saving of streamline clear, propulsion quality.

Description of drawings

Fig. 1 is stem stern molded lines (cross-sectional) scheme drawing of the utility model embodiment.

Fig. 2 is stem stern molded lines (vertical profile) scheme drawing of the utility model embodiment.

Fig. 3 is the first molded lines scheme drawing of the ship ball nose of the utility model embodiment.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described further.

The ship type of present embodiment is the 7000HP offshore platform supply vessel, belongs to the moderate powered category, can provide various materials and material for offshore platform, and externally fuel feeding, water supply has oil slick concurrently and reclaims and external fire-fighting operation function.Length overall 70.0m, molded breadth 17.0m, moldeed depth 7.3m, scantling draft 6.2m, load carrying ability are about 2450 tons, and trial speed is about 14.0kn.

Tail shape adopts the asymmetric double tail fins stern of inward turning.As shaft bossing, screw propeller is contained in its tail end to this stern type with a taper excrescence.Is a spiral open type groove around the shaft bossing, is similar to a spiral cave, by extending and expansion to the ship stern gradually in the ship, and be between shaft bossing and the hull bottom.The rotation direction in spiral cave is opposite with the screw propeller hand of rotation.Under screw propeller inward turning operating mode, the current spiral cave of flowing through forms the rotary water current opposite with screw propeller, and flows to the oar dish with the helical surface form.So not only can improve the circumferential induction velocity of screw propeller, make wake even, also can improve propeller race greatly, form false tail, reach the effect that improves propulsion coefficient and vibration damping.

As Fig. 1, in conjunction with shown in Figure 2, vertical 20 equal portions of hull are carried out cross-sectional cutting, obtain sheer plan shown in Figure 1, molded lines 0~9 is a ship stern body plan, and molded lines 10~20 and molded lines A, B, C are the stem body plan, and BL is the hull bottom baseline.Ship stern bow and buttock lines it will be understood by those skilled in the art that as shown in Figure 2 so do not give unnecessary details.

The hull stem adopts S-V shape ball nose head, and S shape ball head can provide enough spaces for the layout of the first thruster in front and back; V-arrangement can improve its rapidity.The speed of a ship or plane is during greater than bulb-bowed hump speed, and the ball nose is first can to show its drag reduction effect.Bulb-bowed drag-reduction effect is directly relevant with the speed of a ship or plane, and when the speed of a ship or plane during greater than the bulb-bowed hump speed of what is called, the ball nose is first can its drag reduction effect of demonstration.Bulb-bowed setting also provides enough arrangement space for former and later two first thrusters.As shown in Figure 3, molded lines A, B, C, 20 are with shown in Fig. 1, and CL cuts open molded lines in the stem, and AL is the drauht line, and DL is the ship center line.The bulb-bowed characteristic parameter value of ship is as follows respectively: outstanding relatively length is 0.045, and depth of immersion is 0.45 relatively, and the width ratio is 0.16, and the area ratio is 0.095, and volume ratio is 0.0029.

This specific embodiment shows that through streamline test the first streamline of the ball nose of flowing through is smooth-going to vertically streaming of topside, streamline clear, and not having obviously between the streamline, intersection mixes.

Propulsion quality is outstanding.Under Vs=14kn, 3.70m screw propeller, basical traditional model η D=0.640, this ship type η D=0.734, improved 14.7%.

Energy-saving effect is remarkable.When this type ship is identical with the basical traditional model speed of a ship or plane, when the speed of a ship or plane was respectively 12.996kn and 14.288kn, the power of receiving of screw propeller was reduced to 1435.24kw and 1731.53kw by 1736.72kw and 2242.64kw respectively, saves power 17.36% and 22.79% respectively

Should be noted that; the exemplary illustration that this specific embodiment is just done the utility model and do not limit its protection domain; those skilled in the art can also make the change of some unsubstantialities to the utility model; so long as the improvement of carrying out without creative work and to this patent, all within the protection domain of this patent.

Claims (2)

1. the first double tail fins stern of ball ship, as shaft bossing, screw propeller is contained in its tail end to this ship stern type, it is characterized in that with a taper excrescence, has a spiral open type groove around the described shaft bossing, and spiral rotation direction is opposite with the screw propeller hand of rotation; Described open type groove is expanded by extending to the ship stern gradually in the ship, and is between shaft bossing and the hull bottom.
2, the first double tail fins stern of ball according to claim 1 ship, it is characterized in that, the parameters for shape characteristic of the ball head of the first double tail fins stern of described ball ship is: outstanding relatively length is 0.045 ± 10%, depth of immersion is 0.45 ± 10% relatively, the width ratio is 0.16 ± 10%, the area ratio is 0.095 ± 10%, and volume ratio is 0.0029 ± 10%.
CNU2008201919653U 2008-10-31 2008-10-31 Bulbous bow twin-tail fin stern ship CN201300963Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201919653U CN201300963Y (en) 2008-10-31 2008-10-31 Bulbous bow twin-tail fin stern ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201919653U CN201300963Y (en) 2008-10-31 2008-10-31 Bulbous bow twin-tail fin stern ship

Publications (1)

Publication Number Publication Date
CN201300963Y true CN201300963Y (en) 2009-09-02

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102320348A (en) * 2011-07-01 2012-01-18 武汉武船海洋工程船舶设计有限公司 Large logistics support boat for oceanographic engineering base
CN102490886A (en) * 2011-12-06 2012-06-13 武汉武船海洋工程船舶设计有限公司 Ocean engineering ship
CN102490872A (en) * 2011-12-06 2012-06-13 武汉武船海洋工程船舶设计有限公司 Deepwater work ocean platform service boat
CN102530188A (en) * 2011-12-06 2012-07-04 武汉武船海洋工程船舶设计有限公司 Yacht for inland waterway
CN102745304A (en) * 2012-07-17 2012-10-24 武汉武船海洋工程船舶设计有限公司 Ship with knuckle line and internal rotational fin tail
CN103192947A (en) * 2013-03-29 2013-07-10 武汉武船海洋工程船舶设计有限公司 Three-stern and three-screw mono-hull high-speed ship
CN104401475A (en) * 2014-11-25 2015-03-11 上海船舶研究设计院 Structure in combination of double vortex tail fins and tail shaft system of twin-propeller ship
CN104890806A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN104890807A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN104890805A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN106494569A (en) * 2016-11-15 2017-03-15 中国船舶科学研究中心上海分部 A kind of inland river large-scale energy-saving green container ship

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102320348A (en) * 2011-07-01 2012-01-18 武汉武船海洋工程船舶设计有限公司 Large logistics support boat for oceanographic engineering base
CN102490886A (en) * 2011-12-06 2012-06-13 武汉武船海洋工程船舶设计有限公司 Ocean engineering ship
CN102490872A (en) * 2011-12-06 2012-06-13 武汉武船海洋工程船舶设计有限公司 Deepwater work ocean platform service boat
CN102530188A (en) * 2011-12-06 2012-07-04 武汉武船海洋工程船舶设计有限公司 Yacht for inland waterway
CN102745304A (en) * 2012-07-17 2012-10-24 武汉武船海洋工程船舶设计有限公司 Ship with knuckle line and internal rotational fin tail
CN103192947A (en) * 2013-03-29 2013-07-10 武汉武船海洋工程船舶设计有限公司 Three-stern and three-screw mono-hull high-speed ship
CN103192947B (en) * 2013-03-29 2016-08-24 中船重工(武汉)船舶与海洋工程装备设计有限公司 A kind of Three-stern and three-screw mono-hull high-speed ship
CN104890806A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN104890807A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN104890805A (en) * 2014-03-03 2015-09-09 中集船舶海洋工程设计研究院有限公司 Ship
CN104890807B (en) * 2014-03-03 2018-03-30 中集船舶海洋工程设计研究院有限公司 Ship
CN104401475A (en) * 2014-11-25 2015-03-11 上海船舶研究设计院 Structure in combination of double vortex tail fins and tail shaft system of twin-propeller ship
CN106494569A (en) * 2016-11-15 2017-03-15 中国船舶科学研究中心上海分部 A kind of inland river large-scale energy-saving green container ship
CN106494569B (en) * 2016-11-15 2020-06-09 中国船舶科学研究中心上海分部 Large-scale energy-conserving green container ship in inland river

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Wuhan Wuchuan Ocean Engineering Ship Design Co., Ltd.

Assignor: Wuchang Shipbuilding Industry Co., Ltd.

Contract record no.: 2010420000162

Denomination of utility model: Bulbous bow twin-tail fin stern ship

Granted publication date: 20090902

License type: Exclusive License

Record date: 20100916

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 430060 WUHAN, HUBEI PROVINCE TO: 430074 WUHAN, HUBEI PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20130312

Address after: 430074 No. 25, No. three, 3S geo information industry base, Hubei science and Technology Park, East Lake Development Zone, Wuhan, China

Patentee after: Wuhan Wuchuan Ocean Engineering Ship Design Co., Ltd.

Address before: 430060 Hubei city of Wuhan province Wuchang Ziyang Road No. 2

Patentee before: Wuchang Shipbuilding Industry Co., Ltd.

ASS Succession or assignment of patent right

Owner name: WUHAN WUCHUAN OCEAN ENGINEERING SHIP DESIGN CO., L

Free format text: FORMER OWNER: WUCHANG SHIPBUILDING INDUSTRY CO., LTD.

Effective date: 20130312

C41 Transfer of patent application or patent right or utility model
C56 Change in the name or address of the patentee

Owner name: CSIC UHAN HIP AND OCEAN ENGINEERING EQUIPMENT DE

Free format text: FORMER NAME: WUHAN WUCHUAN OCEAN ENGINEERING SHIP DESIGN CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 430074 No. 25, No. three, 3S geo information industry base, Hubei science and Technology Park, East Lake Development Zone, Wuhan, China

Patentee after: China shipbuilding (Wuhan) Marine & Offshore Engineering Equipment Design Co., Ltd.

Address before: 430074 No. 25, No. three, 3S geo information industry base, Hubei science and Technology Park, East Lake Development Zone, Wuhan, China

Patentee before: Wuhan Wuchuan Ocean Engineering Ship Design Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20090902