CN1056121C

CN1056121C - Streamline ship

Info

Publication number: CN1056121C
Application number: CN94112061A
Authority: CN
Inventors: 周锦宇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-23
Filing date: 1994-02-23
Publication date: 2000-09-06
Anticipated expiration: 2014-02-23
Also published as: CN1095999A

Abstract

The present invention relates to a vacuum self-suction tunnel body streamline ship which is characterized in that closed tail tunnel line type points are from a station 0 to a station 6.5 of a ship tail, and a closed point A of the station 0 is near a station 1 at the ship tail. The starting point dimension of the closed point A is at least 5cm below a designed waterline of an empty ship, and a line type in the position of the closed point A is higher than a line type of a point B. A vacuum super water surface tunnel body of a ship body in a W shape is within the range of the closed point A of the ship tail to the point B of the station 6.5. Both sides of the ship body and a bottom base line are parallel, and a thruster is positioned within the range of a station 3 to a station 4.5. The propulsive efficiency of the present invention can be greatly enhanced, and a vortex is lowered. The present invention has favorable stability, maneuverability and navigability. The present invention adapts to the design of super shallow water ships of various navigation channels, and also has significant development value to large and medium cargo ships, or military shallow water landing ships, etc.

Description

Streamline ship

The invention belongs to boats and ships hull form technology, especially a kind of streamline ship.

During ship design is at home and abroad in recent years made, because many coastal harbors and river course, inland river are subjected to the shallow restriction of water, large ship, the particularly ton boats and ships unloading that all can't sail into the harbour need be lightered transfer by canoe, has a strong impact on development coastal and the inland water transport industry, if will build the superport harbour, then costly, the cycle is long, and it is slow to take effect.China's cruiseway if will build railway, highway, then needs to invest a huge sum of money because water is shallow, and cruising range only accounts for about 20% of national river length overall, takies a large amount of soils and valuable good farmland again.Best approach is a development of water transport, its small investment, instant effect.The general employing of conventional boats and ships line style design tail propulsion mode, when the designer satisfied propelling unit the best drinking water design, the hull form designed draft can't satisfy the requirement of travelling in the navigation channel deeply.If the drinking water of design hull is more shallow, the best effect that advances of propelling unit blade out of reach, also surface easily, then influence propulsion coefficient and maneuvering performance, boats and ships for the tail tunnel type tail propulsion mode of routine, because its tunnel design length is subjected to the restriction of marine engine position, afterbody tunnel length is restricted, cause the tunnel buttock line short and steep, curvature change is bigger, to make the current after the propelling unit work be subjected to ponding, and aggravated the disorder of stern propelling unit ambient water, for above-mentioned reasons, make all kinds of tail tunnel type ship oceangoing ships fail in shallow water sea area and shallow water cruiseway, to be widely used, thereby can't in shallow draft waterway, bring into play the advantage of water transport transportation.

Chinese patent " W type tunnel body fleetline boats and ships " (CN87103815), to be the hull elevation profile be W shape line style (and adopting double-enclosure formula twin tunnel) to the characteristics of this patented technology in the hull length overall is made as station, 1.5 station to 6 scope at 10 stations, and propelling unit is positioned at the tunnel scope.Its advantage is the conventional boats and ships line style of obvious improvement to be arranged and improve propulsion coefficient, has overcome the shortcoming of tail tunnel type ship oceangoing ship, mainly is applicable to the ultra shallow draft vessel of the rapids and shoals in general shallow draft waterway and various river courses.Its shortcoming is an above-mentioned superior performance (or advantage) though show between the station, 1.5 stations-6, but the afterbody enclosed point yardstick of this W type ship oceangoing ship is not determined, be that hull afterbody enclosed point yardstick does not clearly provide yardstick underwater, thereby impact for manufacturing and designing of boats and ships.

Task of the present invention is to do further to improve to above-mentioned existing patented technology, the automatic row of employing propelled at high velocity takes out the principle of method and/or vacuum suction method generation vacuum self-priming, solve above-mentioned W shape line style afterbody enclosed point yardstick and do not have problem identificatioin, thereby design a kind of streamline ship, make it to help further improving the propulsion coefficient of boats and ships, improve stability, road-holding property and the navigability of boats and ships simultaneously.

Task of the present invention is achieved in that establishing its hull length overall of all kinds of boats and ships still is 10 stations, propelling unit still is arranged in the tunnel that is W type ship body, characteristics are to be designed to be sealing tail tunnel line style point from station, quarter of a ship 0 station-6.5, quarter of a ship enclosed point A on the quarter 0 station (should set according to different boats and ships or propulsion mode during quarter of a ship enclosed point A specific design near 1 station forward, and to be located at tunnel vacuum fleetline fairing sealing place be good), and the point scale (or position) that rises of this enclosed point A is 5cm at least below the floating line when being positioned at clean ship, but the line style of A point position is higher than the line style (what should decide according to the clean ship designed draft height) that near the enclosed point B 6.5 stations is ordered again, then is the super water surface tunnel of the vacuum body that is W shape hull in the B point range at stern enclosed point A to 6.5 station.Above-mentioned this design mainly is to guarantee that tail air is difficult for entering the vacuum tunnel and guarantees that again the water after the propelling unit work is fluent and smooth logical; In addition, also require the hull both sides to be in same horizontal surface (so just be beneficial to and guarantee that hull both sides air does not enter in the vacuum tunnel, and vacuum tunnel generation water body around hull is absorbed water) with the hull bottom baseline simultaneously as far as possible.

Characteristics of the present invention are that also being positioned at the hull length overall as angle of rake screw propeller is that station, 3 stations-4.5 scope at 10 stations is advisable, floating line when its blade can exceed clean ship above (surpass still water level and can reach 60-150% even 200%), the design of propelling unit blade does not exceed the hull bottom baseline.

The present invention adapts to and to do all kinds of displacement boat ultra shallow draft vessels designs, and the vacuum tunnel of hull can be designed in the boats and ships of the towed or push type of (maybe will be applicable to) single tunnel, double-enclosure formula twin tunnel, a plurality of tunnel formulas etc.

Among the present invention, when the propelled at high velocity, its vacuum tunnel also can be installed the air pump device and vacuumize it in conjunction with adopting to boats and ships relatively large more than 1000 tonnes.

Propelling unit diameter of propeller blade design of the present invention can be greater than 1 times-1.5 times of the hull light ship draught degree of depth, even 2 times, automatic row when propelled at high velocity takes out under the effect, air is discharged from and produces vacuum state in the tunnel body, and also can adopt vacuum suction method (promptly vacuumizing with air pump) for relatively large above boats and ships more than 1000 tons.Externally under the bar pressure effect, water around the hull can constantly be filled up and be higher than the above vacuum tunnel body of water surface curve, owing to be full of water all the time in the tunnel body, to improve propulsion of ship efficient greatly, reduce eddy current, make boats and ships under navigation the time does not produce, not inhale, improve its stability, road-holding property and navigability, the present invention adapts to all kinds of displacement boat ultra shallow draft vessel designs, be suitable for inland river, lake, each torrent navigation channel, mountain area, to coastal, big-and-middle-sized cargo ship comprises and adopts shallow water landing barge etc. also to have great exploitation to be worth.

Below be description of drawings of the present invention:

Fig. 1 is that the present invention is the lateral plan (scheme drawing) of pusher boats and ships;

Fig. 2 is the sectional elevation (scheme drawing) of boats and ships of the present invention;

Fig. 3 be the present invention when being single tunnel screw propeller be positioned at the sectional elevation of 3.5 station location;

Fig. 4 be the present invention when being twin tunnel screw propeller be positioned at the sectional elevation of 3.5 station location;

Fig. 5 is that the present invention is the lateral plan (scheme drawing) of towed boats and ships.

Wherein: 1 hull, 2 design light ship draught lines, 3 bows, 4 sterns, 5 rudders, 6W shape hull tunnel top line, 7 hull bottom baselines, 8 propelling units, 9 propeller shaft line of centerss, 10 air pump devices, 11 pusher boats and ships main frames, 12 towed marine main engines; I, II, III ... X is each erect-position of boats and ships.

In Fig. 1 and Fig. 5, wherein the 0-2.5 station is commutating zone Z, and the 2.5-5 station is suction zones X.

Embodiment: 80T inland navigation craft, hull length overall 29m, design load water line 28m, ship moldeed depth 1.4m, bow stern moldeed depth 1.7m, molded breadth 4.8m, design draft full load (DFL) 0.90m, the average 0.28m of light ship draught, rib is apart from 50cm, power 80HP, after draft 0.38m, bow drinking water 0.19m, the following 10cm of the floating line of point scale when clean ship of 0 station enclosed point A, hull both sides and base line are flat, and propelling unit is positioned at 3.5 stations, and propelling unit is arranged in tunnel, its diameter of propeller is 65cm, screw propeller exceeds the above 32.5cm of waterline, and screw propeller exceeds waterline 116%, and screw blade does not exceed the hull bottom baseline again.

The boats and ships of the above embodiment of the present invention do not have the afterbody squat of conventional ship, manoeuvrable.At certain shallow draft waterway, tonneaux de jauge can only reach 15 tons in history, and the present invention design can reach 80 tons, improve river course transportation volume tonnage 5.4 times, makes river steamer and navigation channel degree of utilization that very big raising be arranged.

Claims

1, a kind of streamline ship, propelling unit (8) is arranged in the tunnel that is W type ship body, it is characterized in that from station, quarter of a ship 0 station-6.5 it being sealing tail tunnel line style point, quarter of a ship enclosed point (A) is near 0 station forward 1 station on the quarter, and this enclosed point (A) is 5cm at least below the floating line (2) when being positioned at clean ship, (A) line style of some position is higher than near the line style of enclosed point (B) point in 6.5 stations again, is the super water surface tunnel of the vacuum body that is W shape hull in (B) point range from stern enclosed point (A) to 6.5 stations.

2, boats and ships according to claim 1, it is characterized in that being positioned at station, 3 stations-4.5 scope that hull (1) length overall is 10 stations as the screw propeller of propelling unit (8), more than the floating line when blade of propelling unit (8) can exceed clean ship, the propelling unit blade does not exceed hull bottom baseline (7) again.

3, boats and ships according to claim 2 are more than the floating line the when 60-150% that it is characterized in that propelling unit (8) blade can exceed clean ship.

4, boats and ships according to claim 1, it is characterized in that can be in conjunction with the air pump device (10) that tunnel is vacuumized usefulness is installed to large ship more than 1000 tonnes.