CN2184648Y

CN2184648Y - Vacuum self suction tunnel body streamline ship

Info

Publication number: CN2184648Y
Application number: CN 94227781
Authority: CN
Inventors: 周锦宇
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-23
Filing date: 1994-02-23
Publication date: 1994-12-07
Anticipated expiration: 2004-02-23

Abstract

The utility model relates to a vacuum self suction tunnel body streamline ship which is characterized in that the station between 0 and 6.5 from the tail part of the ship is a closed tail tunnel line type point, the 0 point which is the closed point A is near the station 1 on the ship tail, the start point dimension of the A is designed below the waterline of the empty ship at least 5 cm, and the line type of the A point is higher than that of the B point; a W-shaped ship body vacuum tunnel body which is over the water surface is in the range from the closed point A on the ship tail to the B station of the six point fifth, both sides of the ship body is level with a bottom baseline, and a propeller is positioned in the range between the third and four point fifth station. The utility model has the advantages of considerably raising propulsive efficiency, reducing vortex flow and having favorable stability, controllability and seaworthiness. The utility model is suitable for the design of a shallow water ship adopted to various water channels and has large developing value of a big-sized and a middle-sized freighters, or an armed shallow water landing craft, etc.

Description

Vacuum self suction tunnel body streamline ship

The utility model 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 expensive big, the cycle is long, and it is slow to take effect.China's cruiseway is because water is shallow, and cruising range only accounts for about 20% of national river length overall, if will build railway, highway.Then need to invest a huge sum of money, take 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 paddle 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 hull elevation profile line style be W shape line style (and can adopt 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 utility model is to do further to improve to above-mentioned existing patented technology, automatic row when adopting propelled at high velocity take out method and or vacuum suction method and produce the principle of 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 utility model 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), this enclosed point A plays point scale (or position) 5cm at least below design light ship draught line (the water surface), 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 to be difficult for into by tail air the vacuum tunnel guarantees that again the current after the propelling unit work are unimpeded; In addition, also requiring the hull both sides to be in same horizontal surface with the hull bottom baseline simultaneously (so just is beneficial to and guarantees that hull both sides air does not enter in the vacuum tunnel, and make the vacuum tunnel produce that the water surface absorbs water around hull), it is that station, 3 stations-4.5 scope at 10 stations is advisable that propelling unit is positioned at the hull length overall.

Characteristics of the present utility model are also that as angle of rake screw propeller its blade can exceed design light ship draught line above (the super width of cloth can reach 60-150% even 200%), and the propelling unit blade does not exceed the hull bottom baseline again.

The utility model adapts to does 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 (or applicable to) single tunnel, double-enclosure formula twin tunnel, a plurality of tunnel formulas etc.

In the utility model, 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 relatively large boats and ships.

The design of the utility model propelling unit diameter of propeller blade 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.Externally under the atmospheric 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 utility model adapts to the design of all kinds of displacement boat ultra shallow draft vessels, is applicable to inland river, lake, each torrent navigation channel, mountain area, coastal, big-and-middle-sized cargo ship is comprised adopt shallow water landing barge etc. also to have great exploitation to be worth.

Below be description of drawings of the present utility model:

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

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

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

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

Fig. 5 is that the utility model 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, the propeller shaft line of centers, 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, 0 station enclosed point A plays point scale at the following 10cm of design light ship draught line, 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 utility model the foregoing description 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, this enclosed point A plays point scale 5cm at least below design light ship draught line (2), the line style of A point position is higher than the line style that near the enclosed point B in 6.5 stations is ordered again, in the B point range at stern enclosed point A to 6.5 station is the super water surface tunnel of the vacuum body that is W shape hull, the both sides of hull (1) and hull bottom baseline (7) are in same horizontal surface, and propelling unit (8) is positioned at station, 3 stations-4.5 scope that hull (1) length overall is 10 stations.

2, boats and ships according to claim 1 is characterized in that the blade of propelling unit (8) can exceed more than the design light ship draught line, and the propelling unit blade does not exceed hull bottom baseline (7) again.

3, boats and ships according to claim 2 is characterized in that the blade of propelling unit (8) can exceed design light ship draught line 60-150%.

4, boats and ships according to claim 1 is characterized in that the vacuum tunnel of hull (1) can be designed in the towed or pusher boats and ships of single tunnel, double-enclosure formula twin tunnel or a plurality of tunnel formulas.

5, 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 relatively large boats and ships.