CN1276318A

CN1276318A - Webbed ring band type ship propeller

Info

Publication number: CN1276318A
Application number: CN 00108435
Authority: CN
Inventors: 谢怀杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-24
Filing date: 2000-05-24
Publication date: 2000-12-13

Abstract

A webbed ring band type propeller for ship features that the curved webs are mounted to a ring band passing through the drive and driven wheels at intervals. The webs on the lower half of ring band can push water backward, generating efficient push force to propel the ship forward. Its advantages are large water area to be pushed, high efficiency and low speed of pushing water. It is specially suitable for catamaran.

Description

Webbed ring band type ship propeller

The invention belongs to marine propulsion, especially can satisfy the designing requirement of the angle of rake large tracts of land of high efficiency, low-speed water propelling.

The blade design area of present known propeller for vessels is subjected to the restriction of " hydraulic efficiency " to arrive the limit, can not continue to enlarge blade and push away water area, it exists very big a part of consumption of power on by the current of little quality that it drove, high flow rate, add again screw propeller intrinsic 1ift-drag ratio resistance and form the used up idle work of water column vortex, this all is the low reason of propeller efficiency; And the bionic penguin ship of U.S.'s development at present is to rely on two to hang over stern and provide thrust as rudder " the web wing ", two web wings come and go as penguin alternately strikes backward, because it push away water area and might design to such an extent that to push away water area than screw propeller big, the web wing is unlike the resistance of the intrinsic 1ift-drag ratio of screw propeller and the water column vortex that certainly leads in addition, thereby efficiency ratio screw propeller height, but it is still not very big that it pushes away water area, and its two web wings are coming and going when alternately striking backward, there is web wing backhaul resistance, again it, the line of thrust of two web wings can not be superimposed with the ship's navigation line well, causes the suspicion of thrust vectoring projection loss and thrust instability.

The purpose of this invention is to provide a kind of propelling unit, can satisfy high efficiency angle of rake large tracts of land, the low requirement that pushes away water speed greatly, there is not the resistance in the intrinsic 1ift-drag ratio of propeller blade again and forms the used up extra idle work of water column vortex, do not walk back and forth the again web wing backhaul resistance of living penguin ship is so its propulsion coefficient greatly improves than screw propeller and the angle of rake propulsion coefficient of bionic penguin ship.

The present invention realizes like this, on the annular driving band of walking around driving wheel and flower wheel, load onto the spill web wing one by one at regular intervals, formed Webbed ring band type, following one side of something of Webbed ring band type is submerged in the water, when Webbed ring band type is subjected to the driving of driving wheel and uses a plurality of spill webs to strike backward simultaneously just to have produced high thrust.This device is suitable for the usefulness of catamaran most.Because the passage that the present invention can make full use of between catamaran hull is installed long Webbed ring band type, having the more web wing to participate in making at one time strikes, as dragon-boat racing as many oar with pushing away a boat, improved greatly and always pushed away water area, under identical power, the big quality of the fluid that in the unit time, is pushed, the angle of rake requirement of high efficiency of low flow velocity have been realized.Because most web wings of following one side of something of Webbed ring band type are pure unidirectionally strike backward, the absolute value that has determined the resistance of motion of the web wing in water is exactly the absolute value that promotes the thrust that boats and ships advance, problem unlike the intrinsic 1ift-drag ratio of screw propeller, so the web wing can adopt the bigger concave body of drag coefficient as far as possible, make and cause bigger momentum change to produce bigger thrust by current energy reverse reflux after entering the spill web.In order to make the web wing begin to enter and withdraw from the water surface stage unlike the projection loss of the web sheet thrust vectoring of web wheel steamer in former days, this device supports to down trapezoidal layout with a driving wheel and three flower wheels with Webbed ring band type, reduce the web band in the squareness that enters and withdraw from the water surface, reduced the thrust projection loss of this one, two web wing that goes out upstream face as far as possible.

The invention will be further described below in conjunction with drawings and Examples:

Fig. 1 is a total arrangement schematic diagram of the present invention.

Fig. 2 is the block diagram (part) of the fabricate block of each major part.

Among the figure: 1, annular driving band 2, the web wing 3, driving wheel 4, flower wheel 5, horizontal surface

In Fig. 1, the web wing (2) is adorned at regular intervals to be fixed on the annular driving band (1) and has been formed Webbed ring band type, and forms a propelling unit that falls trapezoidal layout with driving wheel (3) and three flower wheels (4).The cog belt pattern that driving band can adopt the metallic of seawater corrosion resistance to become chain-type or make with flexible materials such as rubber, all aromatic Silons, and sprocket wheel that adapts with it or the cooperation of profile of tooth belt wheel.When the web band is subjected to the driving of driving wheel and when turning round, is submerged in following half of web band in the water and just strikes backward and produced high thrust with a plurality of web wings.Because the web wing has adopted the concave body of big drag coefficient, has improved greatly by the momentum change of the current of its promotion, has obtained bigger thrust.In order to guarantee that thrust is stable, the thrust centrostigma position of each spill web should accurately be installed on the driving band, and for this reason, the spill web has a breach to enable to cooperate with power wheel and work.The present invention is most appropriate to the usefulness that catamaran is done propelling, it can maximally utilise hull length increases web wing number as the many oars arrangements of dragon boat with pushing away a boat, augmented thruster always pushes away water area, reach increase is pushed in the unit time current quality, reduction water velocity, improve propulsion coefficient.In order to adapt to the draft variation of boats and ships because of load-carrying, driving wheel and flower wheel are provided with synchronous lifting device, make hull can adjust the best submersible depth of the web wing when surpassing certain draft.

Claims

1, a kind of Webbed ring band type ship propeller has the web wing, it is characterized in that: each web wing is to be installed at regular intervals on the annular driving band of walking around driving wheel and flower wheel.

2, by the described propelling unit of claim 1, it is characterized in that the web wing adopts the concave body of big drag coefficient.

3, by the described propelling unit of claim 1, it is characterized in that driving wheel and flower wheel support to down trapezoidal layout with Webbed ring band type.

4,, it is characterized in that adopting when driving band is made of metal chain structure by the described propelling unit of claim 1; When driving band during, adopt the cog belt structure with flexible material such as rubber or all aromatic Silons.