CN203318632U

CN203318632U - Resistance reduction air layer maintaining structure of wedge-shaped ship bottom

Info

Publication number: CN203318632U
Application number: CN2013201993313U
Authority: CN
Inventors: 李忠刚; 强兆新; 郝金凤; 程保国; 韩琳
Original assignee: China Ship Design & Research Center Co Ltd
Current assignee: China Ship Design & Research Center Co Ltd
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2013-12-04
Anticipated expiration: 2023-04-19

Abstract

The utility model provides an air layer maintaining device which is low in energy consumption, good in resistance reduction effect and low in cost, and relates to a resistance reduction air layer maintaining structure of a wedge-shaped ship bottom, which adopts a ship bottom structure design with wedge-shaped air cavities arranged in a stepped manner. The resistance reduction air layer maintaining structure is characterized in that more than two parallel longitudinal partition plates perpendicular to the ship bottom are connected with an inclined ship bottom in a longitudinal direction of a ship body to form the resistance reduction air layer maintaining structure; the longitudinal partition plates averagely divide the inclined ship bottom into one and more air cavities with appropriate lengths, widths and depths to be used for maintaining an air layer; air is injected into the air cavities; the wedge-shaped air cavities arranged in a stepped manner can maintain the injected air at the ship bottom better in case of rolling of a ship, so that overflow of the resistance reduction air is reduced effectively; the air layer covering most of the ship bottom is formed; the ship bottom is isolated from water; the running resistance of the ship is reduced greatly; and the running energy consumption of the ship is further reduced. The resistance reduction air layer maintaining structure is low in energy consumption, significant in resistance reduction effect, convenient to construct, and low in cost, and achieves low cost and emission reduction, and the linearity of the original ship type can be maintained better.

Description

A kind of wedge shape hull bottom drag reduction gas-bearing formation keeps structure

Technical field

The utility model relates to a kind of wedge shape hull bottom drag reduction gas-bearing formation and keeps structure.

Background technology

Hull surface gas-bearing formation lubrication drag reduction technology can significantly reduce ship resistance, reduces consumption of fuel, improves ship speed, has important economic value and the value of environmental protection.Over nearly 30 years, by a large amount of experimental studies, the resistance reduction by air cavity technology, its good drag-reduction effect is checked by test, and has obtained real ship application.

The bottom structure of resistance reduction by air cavity ship has following three kinds of patterns: plain base bottom structure design, inner concave shape bottom structure and be applied to the faulted-stage formula structure design on high-speed boat.The shortcoming of plain base bottom structure design is that the compression of injecting the hull bottom appearance adheres to the hull difficulty, will directly cause the supply of boats and ships pressurized air to increase, and apparatus capacity strengthens, the energy-saving effect that difficulty has had.The inner concave shape bottom structure has the structure air cavity can stablize gas-bearing formation, realizes good drag-reduction effect, but on existing ship, is difficult to realize.And the shortcoming of the structure design of faulted-stage formula is can not to be applied on the large transport ship oceangoing ship for small-sized high-speed boat, limitation is obvious.

Above various different types bottom structure is applicable to not shipmate type, and merits and faults is respectively arranged.Not yet there is at present the gas-bearing formation for the wedged bottom carrier to keep structure design, design and a kind ofly be applicable to the wedged bottom carrier and can reduce ship structure arrange change, reduce the air demand demand, maintain stable gas-bearing formation under the motion of ship situation, reach the gas-bearing formation holding device of best drag-reduction effect, significant to realizing the ship's navigation energy-saving and emission-reduction.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, fill up the blank of wedged bottom carrier application resistance reduction by air cavity technology, adopt ladder to arrange the bottom structure design of wedge shape air cavity, provide that a kind of energy consumption is low, drag-reduction effect good, cheap gas-bearing formation holding device.

For reaching above purpose, the technical solution adopted in the utility model is: a kind of wedge shape hull bottom drag reduction gas-bearing formation keeps structure, specifically comprises: ship is flat, midfeather, ship wedged bottom;

It is characterized in that: described a kind of wedge shape hull bottom drag reduction gas-bearing formation keep structure be by more than two, be parallel to each other and perpendicular to the midfeather of hull bottom along hull vertically and the ship wedged bottom connect and compose; Midfeather on average is divided into the ship wedged bottom air cavity of one or more suitable length, width and the degree of depth for keeping gas-bearing formation, but arranges depending on four above midfeather ladders of beam situation, and midfeather needs both can participate in resulting intensity according to boats and ships, also can not participate in.

Its effect is: air Injection is to air cavity, ladder arranges that the wedge shape air cavity also can remain on preferably hull bottom by the air of injection when boats and ships have the rolling situation, effectively reduce the drag reduction air excessive, form the gas-bearing formation that covers hull bottom overwhelming majority area, make hull bottom and water isolation, thereby reduce greatly the running resistance of boats and ships, and then the energy consumption of travelling of reduction boats and ships, this vertical diaphragm plate is as the attached body structure of hull bottom appearance simultaneously, do not lean out the hull bottom baseline due to the wedged bottom respective outer side edges, thereby avoid the impact on the ship operation.

The beneficial effects of the utility model are: adopt ladder to arrange the bottom structure design of wedge shape air cavity, a plurality of air cavitys can remain on hull bottom well by air, effectively reduce air excessive; The structure that keeps this gas-bearing formation can effectively reduce the running resistance of boats and ships, improves route speed, reduces energy consumption, realizes low-cost and reduces discharging, and has significant economic benefit and social benefit; This gas-bearing formation keeps structure also for the carrier that wedged bottom is arranged is transformed into the resistance reduction by air cavity ship, to provide a kind of effective scheme.The repacking that present technique both can be used for carrier also can be for the design-build of new ship type, and easy construction can maintain the line style of original ship shape preferably, realizes the boats and ships resistance reduction by air cavity, reaches the purpose of energy-saving and emission-reduction.

The accompanying drawing explanation

Accompanying drawing 1 is the utility model structural representation.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, a kind of wedge shape hull bottom drag reduction gas-bearing formation keeps structure to the utility model structure, specifically comprises: ship is flat 1, midfeather 2, ship wedged bottom 4;

It is characterized in that: described a kind of wedge shape hull bottom drag reduction gas-bearing formation keep structure be by more than two, be parallel to each other and perpendicular to the midfeather 2 of hull bottom along hull vertically and ship wedged bottom 4 connect and compose; Midfeather 2 on average is divided into ship wedged bottom 4 air cavity 3 of one or more suitable length, width and the degree of depth for keeping gas-bearing formation, but arranges depending on four above midfeather 2 ladders of beam situation, and midfeather 2 needs both can participate in resulting intensity according to boats and ships, also can not participate in.

Its effect is: air Injection is to air cavity 3, ladder arranges that the wedge shape air cavity also can remain on preferably hull bottom by the air of injection when boats and ships have the rolling situation, effectively reduce the drag reduction air excessive, form the gas-bearing formation that covers hull bottom overwhelming majority area, make hull bottom and water isolation, thereby reduce greatly the running resistance of boats and ships, and then the energy consumption of travelling of reduction boats and ships, this vertical diaphragm plate 2 is as the attached body structure of hull bottom appearance simultaneously, do not lean out the hull bottom baseline due to the wedged bottom respective outer side edges, thereby avoid the impact on the ship operation.

Claims

1. a wedge shape hull bottom drag reduction gas-bearing formation keeps structure, specifically comprises: ship flat (1), midfeather (2), ship wedged bottom (4); It is characterized in that: described a kind of wedge shape hull bottom drag reduction gas-bearing formation keep structure be by more than two, be parallel to each other and perpendicular to the midfeather (2) of hull bottom along hull vertically and ship wedged bottom (4) connect and compose; Midfeather (2) on average is divided into one or more air cavity (3) for keeping gas-bearing formation by ship wedged bottom (4), depending on four above midfeathers of beam situation (2) but ladder arrange.