CN202703839U

CN202703839U - Head portion structure of container ship

Info

Publication number: CN202703839U
Application number: CN2012204150076U
Authority: CN
Inventors: 胡安康; 尹逊滨; 余建伟; 廉宝刚; 刘名东; 毕向建; 吴文龙
Original assignee: China International Marine Containers Group Co Ltd; CIMC Ocean Engineering Design and Research Institute Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; CIMC Ocean Engineering Design and Research Institute Co Ltd
Priority date: 2012-08-20
Filing date: 2012-08-20
Publication date: 2013-01-30
Anticipated expiration: 2022-08-20

Abstract

Provided is a head portion structure of a container ship. The head portion structure of the container ship comprises a bulbous bow arranged under the front portion of the head portion of the ship, and the top end of the bulbous bow is higher than the designed waterline of the container ship and lower than the structure waterline of the container ship. By changing the height of the bulbous bow, the top end of the bulbous bow is higher than the designed waterline of the container ship and is lower than the structure waterline of the container ship, and therefore resistance performance of the ship between the designed waterline and the structure waterline can be improved and quickness of the ship between the designed waterline and the structure waterline can be improved.

Description

The stem structure of box ship

Technical field

The utility model relates to the ship design field, and is especially relevant with the bulbous bow structure of box ship.

Background technology

The drinking water of boats and ships refers to that boats and ships are immersed in the degree of depth in the water, and this degree of depth is according to the difference of ship design and difference.The size of drinking water not only depends on boats and ships and all article of boat-carrying, such as the weight of goods, ballast, fuel and spare part, but also depends on the density of boats and ships water of living in.By reading the water gauge that is marked on stem and ship stern, can determine the drinking water of boats and ships.Drauht is divided into designed draft and scantling draft, the designed draft of boats and ships refers to the corresponding drinking water of boats and ships at full load under the design point, the scantling draft of boats and ships refers to the draft extreme that hull structure can bear, consult Fig. 1, the stem of boats and ships all is labeled with scantling draft line β and designed draft line α usually, usually scantling draft line β is higher than designed draft line α, to guarantee that even boats and ships heavy duty in the operation process exceeds designed draft line α, as long as do not exceed scantling draft line β, boats and ships also are safe.

Continue to consult Fig. 1, the position below foremost part of ship designed draft line α is provided with one and approximate is spherical bulbous bow 1 usually.The reason that boats and ships arrange bulbous bow 1 is that ship can produce wave making resistance in the time of navigation, and bulbous bow 1 can be offset this wave making resistance, thereby makes ship's speed faster.In general, the bulbous bow 1 of most of boats and ships all is below the designed draft line, and its Main Function is to reduce the resistance of boats and ships when designed draft, improves the rapidity of boats and ships.

But the drinking water of boats and ships under case of heavy load may surpass designed draft, this moment bulbous bow 1 under the water surface with not ing, the wave making resistance that produces so bulbous bow 1 can't be offset ripples above it, and then affect the speed of a ship or plane of boats and ships.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the deficiency that above-mentioned prior art exists, and a kind of stem structure of box ship is proposed, it is by revising the bulbous bow height, improve the resistance performance of boats and ships between designed draft and scantling draft, improve the rapidity of boats and ships between designed draft and result's drinking water.

For solving the problems of the technologies described above, the utility model proposes a kind of stem structure of box ship, comprise the bulbous bow that is positioned at the bow lower front, the top of described bulbous bow is higher than the designed draft line of box ship and is lower than the scantling draft line of box ship.

The stem structure of described box ship, wherein, the top of described bulbous bow exceeds the height of designed draft line between 1.0m ~ 1.5m.

The stem structure of described box ship, wherein, described bulbous bow at the section outer contour of box ship Width is: with respect to the continuous closed curve that forms of two sections minor arcs of the vertical center line symmetry of hull.

The stem structure of described box ship, wherein, the stem structure of described box ship also comprises the sharp bow that is positioned at the bow front upper, described sharp bow and described bulbous bow be connected and the boundary line of the front end face of integrative-structure and the vertical midship section of hull S-shaped.

The stem structure of described box ship, wherein, the boundary line of the vertical midship section of the front end face of described sharp bow and hull comprises: from top to bottom toward an oblique line and a vertical curve that is connected to the oblique line lower end of rear-inclined, the height of this vertical curve is between 1.0m ~ 2.5m.

The stem structure of described box ship, wherein, the both sides of described sharp bow are drawn close to the centre gradually back to front and are linked together, and the front end face of described sharp bow is from top to bottom toward rear-inclined, and the bottom of sharp bow front end face is connected with the end face of bulbous bow and form a recess in the junction.

Compared with prior art, the utlity model has following beneficial effect: the utility model is by changing the height of bulbous bow, make the top of bulbous bow be higher than the designed draft line and be lower than the scantling draft line, thereby improve the resistance performance of boats and ships between designed draft and scantling draft, improve the rapidity of boats and ships between designed draft and scantling draft.

Description of drawings

Fig. 1 is the stem structure side view of box ship of the prior art.

Fig. 2 is the stem structure side view of box ship of the present utility model.

Fig. 3 is the multiview drawing that box ship of the present utility model is seen to the stern direction from fore.

The specific embodiment

In order to further specify principle of the present utility model and structure, now by reference to the accompanying drawings preferred embodiment of the present utility model is elaborated.

The utility model when describing the orientation take orientation, fore place as before, after orientation, stern place is.

Consult Fig. 2 and Fig. 3, the stem structure of box ship of the present utility model comprises: be positioned at the bulbous bow 1 and the sharp bow 2 that is positioned at the bow front upper of bow lower front, sharp bow 2 and bulbous bow 1 are connected.

Bulbous bow 1 is extended forward by first post 3 positions of box ship, outline line 11 approximate horizontal of its top, and the boundary line of the vertical midship section of front end face and hull is the camber line that smoothly extends gradually from front to back downwards.Bulbous bow 1 is roughly along the section outer contour of box ship Width: the two sections minor arcs 12 with respect to vertical center line 4 symmetries of hull link to each other and the closed curve of formation.The top of bulbous bow 1 is higher than designed draft line α and is lower than scantling draft line β, and is preferred, makes bulbous bow 1 top exceed the distance of designed draft line α between 1.0m ~ 1.5m.

Point bow 2 is positioned at the top of bulbous bow 1, and be connected with bulbous bow 1 front end face of structure and boundary line that hull is indulged midship section of sharp bow 2 is roughly S-shaped.The boundary line of the vertical midship section of point bow 2 front end faces and hull is the first half of S line, and it comprises: toward an oblique line 21 and a vertical curve 22 that is connected to oblique line 21 lower ends of rear-inclined, preferred, the height of the section of making vertical curve 22 is between 1.0m ~ 2.5m from top to bottom.

The both sides of point bow 2 are drawn close to the centre gradually back to front and are linked together, and the front end face of sharp bow 2 is from top to bottom gradually toward rear-inclined, and the bottom of sharp bow 2 front end faces is connected with the end face of bulbous bow 1 and form a recess 20 in the junction.

To sum up, the utility model makes the top of bulbous bow be higher than designed draft line α and be lower than scantling draft line β by changing the height of bulbous bow, thereby reduce the resistance of boats and ships when scantling draft, improve the rapidity of boats and ships when scantling draft, make ship energy saving about 2%, be roughly equal to 950KW.

It is worth mentioning that; above-described embodiment only is preferred embodiment of the present utility model; and unrestricted protection domain of the present utility model; when reality is implemented; bulbous bow 1 and sharp bow 2 might not adopt above-mentioned configuration; also can adopt other structures well known in the prior art and shape, can realize the purpose of this utility model as long as the top of bulbous bow 1 is higher than designed draft line α and is lower than scantling draft line β.

Claims

1. the stem structure of a box ship comprises the bulbous bow that is positioned at the bow lower front, it is characterized in that, the top of described bulbous bow is higher than the designed draft line of box ship and is lower than the scantling draft line of box ship.

2. the stem structure of box ship as claimed in claim 1 is characterized in that, the top of described bulbous bow exceeds the height of designed draft line between 1.0m ~ 1.5m.

3. the stem structure of box ship as claimed in claim 1 is characterized in that, described bulbous bow at the section outer contour of box ship Width is: with respect to the continuous closed curve that forms of two sections minor arcs of the vertical center line symmetry of hull.

4. the stem structure of box ship as claimed in claim 1, it is characterized in that, the stem structure of described box ship also comprises the sharp bow that is positioned at the bow front upper, described sharp bow and described bulbous bow be connected and the boundary line of the front end face of integrative-structure and the vertical midship section of hull S-shaped.

5. the stem structure of box ship as claimed in claim 4, it is characterized in that, the boundary line of the vertical midship section of the front end face of described sharp bow and hull comprises: from top to bottom toward an oblique line and a vertical curve that is connected to the oblique line lower end of rear-inclined, the height of this vertical curve is between 1.0m ~ 2.5m.

6. the stem structure of box ship as claimed in claim 4, it is characterized in that, the both sides of described sharp bow are drawn close to the centre gradually back to front and are linked together, the front end face of described sharp bow is from top to bottom toward rear-inclined, and the bottom of sharp bow front end face is connected with the end face of bulbous bow and form a recess in the junction.