CN101332859B

CN101332859B - Bow outline of ship

Info

Publication number: CN101332859B
Application number: CN2007100428156A
Authority: CN
Inventors: 高斌; 陈兵; 胡可一
Original assignee: Jiangnan Shipyard Group Co Ltd
Current assignee: Jiangnan Shipyard Group Co Ltd
Priority date: 2007-06-27
Filing date: 2007-06-27
Publication date: 2010-04-14
Anticipated expiration: 2027-06-27
Also published as: CN101332859A

Abstract

The invention discloses a bow line of a ship. The bow linear of a ship is characterized in that in the longitudinal profile of the ship, most part of the bow vertical line of the ship which takes thedesigned sea gauge as a center is vertically downward; in the transverse profile of the ship, the largest semi-width location of the bow to the bow vertical line in the range of 3 percent of the lengthof the ship is arranged between 60 to 90 percents of the designed sea gauge. The bow line of the ship has the beneficial effects that the invention absorbs the advantages of the bulbs designs of thes hips with low and high speeds as well as combines the advantages of the two to form a line which has no bulbs, but simultaneously considers the two effects of commutation and wave absorption of thebulbs; simultaneously the optimizing design on the aspect of seakeeping is carried out on the bow as the problem of larger stall ratio that is currently faced in large ship waves is considered, whichalsoleads the bow of the ship to have the advantages of smaller stall ratio in wave as well.

Description

The bow outline of boats and ships

Technical field

The present invention relates to a kind of bow outline of boats and ships.

Background technology

The modern ships particularly nearly all boats and ships of several big ship types such as oil carrier, bulge carrier and box ship all has the ball nose, and the ball nose almost is the indispensable parts of these modern ships.The ball nose has effects such as wave absorption rectification, and wave absorption is to utilize the favourable interference of wave making to reduce resistance, and the mechanism of rectification is in order to reduce the possibility that the whirlpool takes place, and also is in order to reduce resistance.It mainly is the wave absorbing function that utilizes the ball nose that resistance falls in speed ship employing faster ball nose, and its ball nose center of gravity relative position is higher; Along with the reduction of speed, particularly recent slow full formed ship oceangoing ship adopts the ball nose to fall resistance, and its valve action more and more occupies main status, and the center of gravity of its ball nose roughly in 50% designed draft position, is in lower position.

Present three big main flow boats and ships run on the ocean of wave environment, face the rough water quality problem.Some boats and ships is because too loose, perhaps only considers the navigation performance in the hydrostatic and ignores rough water quality or the like reason, causes the rough water quality problem very outstanding, and the design of the particularly bigger problem of speed loss in waves, so rough water quality becomes more and more important gradually.

Summary of the invention

The objective of the invention is in order to solve problems more of the prior art, provide a kind of rectification, wave absorption two of taking into account the ball nose to act on greatly, have the good boats and ships bow outline of rough water quality concurrently.

For realizing above purpose, the present invention is achieved through the following technical solutions:

The bow outline of boats and ships is characterized in that, in the bow longitudinal diagram of boats and ships, the bow outline line of boats and ships is that the major part at center is vertically downward with the designed draft; In the bow bench section of boats and ships, below the designed draft, the maximum half-breadth place of bow in forward perpendicular 3% captain's scope is between 60% to 90% designed draft.

Wherein, in the bow bench section, the above 2m of designed draft position, in forward perpendicular 3% captain's scope, the body lines of each position and the angle of horizontal surface are between 65 ° to 70 ° at bow.

Wherein, the hull at above 2 meters of designed draft is connected with above other hull fairing everywhere of designed draft, keeps the gentle variation of angle.

Bow outline divides the above partial sum designed draft of design drinking water with the lower part.

The maximum position of the following part line style of designed draft half-breadth is roughly between 60% and 90% designed draft, this just makes that the lower part below the bow designed draft is relatively very thin, its rectification effect is relatively good, and the first half below the bow designed draft is relatively looser, strengthened first wave intensity of its bow, help favourable interference taking place, reduce wave making resistance with the ripple of back.

Near the designed draft and designed draft change with the line style on top milder, to below the designed draft and designed draft carry out the rough water quality optimal design with top.And, require as follows to the requirement that the body lines and the horizontal plane angle of the above subregion of designed draft are done a rough water quality aspect:

1: this vertical position, zone is the above 2m of designed draft place;

2: this zone longitudinal extent promptly along captain's direction at forward perpendicular in apart from forward perpendicular 3% captain's scope;

3: the number of degrees of each body lines of this zone and horizontal plane angle are between 65 ° to 70 °;

4: the line style of other location is connected with this location line style fairing, ensures angle gentle change of each body lines at place, different vertical position and horizontal surface.

Doing such requirement is to make such bench section not have influence to motion (refer to pitching, hang down and swing and corrugated motion relatively) and power increase (being speed loss in waves).

The invention has the beneficial effects as follows: the present invention has absorbed low speed and high speed vessel ball nose design-calculated advantage, and both advantages are got up, and forms the line styles of a kind of rectification that does not have the ball nose still to take into account the ball nose simultaneously, wave absorption two big effects; Consider the rough water quality problem that faces at present simultaneously, be primarily aimed at the bigger problem of full formed ship oceangoing ship speed loss in waves, bow is carried out the optimal design of rough water quality aspect, make that the stall of boats and ships bow in wave is less.This bow outline is owing to taken into account the rectification and the wave absorbing function of ball nose, and therefore ship type applicatory is wider, and the speed of a ship or plane scope that is suitable for is wider, is the stronger multi-functional bow of a kind of commonality.

Description of drawings

The bow outline line of Fig. 1 in the boats and ships longitudinal diagram, showing;

Fig. 2 is the boats and ships drawing in side sectional elevation of bow part station track.Because the present invention is the line style that bow does not vertically have the ball nose, therefore need not to show No. 20 station track of bow.

The specific embodiment

Below in conjunction with accompanying drawing specific embodiments of the invention are done a detailed description:

The bow outline of boats and ships, in figure as shown in Figure 1, the bow outline line of boats and ships is that the major part at center is vertically downward with the designed draft line.In the cross-sectional upper thread as shown in Figure 2, with the lower part, in bow 3% captain's scope, the maximum position of the half-breadth of each bar body lines roughly is in the position of 72% designed draft at designed draft, make that the latter half line style below the designed draft is very thinner, help rectification; And the first half below the designed draft is relatively fatter, helps reducing resistance by the favourable interference of wave making; In addition near the designed draft and designed draft change gentlely with the line style on top, make that power increases less (also being that speed loss in waves is less) in the wave.19.75 station tracks as shown in Figure 2, apart from 2 meters of designed draft, body lines and horizontal plane angle are 67 °.

Embodiment among the present invention only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in protection domain of the present invention.

Claims

1. the bow outline of boats and ships is characterized in that, in the bow longitudinal diagram of boats and ships, the bow outline line of boats and ships is that the major part at center is vertically downward with the designed draft; In the bow bench section of boats and ships, below the designed draft line, the maximum half-breadth place of bow in forward perpendicular 3% captain's scope is between 60% to 90% designed draft.

2. the bow outline of boats and ships according to claim 1, it is characterized in that, in the bow bench section, the above 2 meters positions of designed draft line, in forward perpendicular 3% captain's scope, the body lines of each position and the angle of horizontal surface are between 65 ° to 70 ° at bow.

3. the bow outline of boats and ships according to claim 2 is characterized in that, the hull at above 2 meters of designed draft is connected with above other hull fairing everywhere of designed draft, keeps the gentle variation of angle.