CN2463311Y

CN2463311Y - Axial-flow hydraulic propelling hull

Info

Publication number: CN2463311Y
Application number: CN 01217096
Authority: CN
Inventors: 胡永平; 王裕斌; 蒋耀军; 黄一新; 沈冬祥; 刘建勋; 郑宝礼; 刘东哲
Original assignee: 63983 Troops of PLA
Current assignee: 63983 Troops of PLA
Priority date: 2001-01-09
Filing date: 2001-01-09
Publication date: 2001-12-05
Anticipated expiration: 2011-01-09

Abstract

The utility model discloses an axial-flow hydraulic propelling hull, which is characterized in that the bottom of the hull is provided with a water inlet which is provided for a propelling pump to suck water flow; both sides at the bottom of the hull have arc-shaped openings, and the arc-shaped openings are communicated with a water inlet and form line type transition; the height of arc-shaped openings at both sides of the hull is one fifth to one third of the draught depth of the hull. The axial-flow hydraulic propelling hull of the utility model has the advantages that the situation of sitting on beach (bottom sucking) can not occur, and the normal sailing of a ship can be ensured.

Description

A kind of axial flow water-jet propelled craft hull

The utility model relates to a kind of hull, is a kind of hull that adopts the boats and ships of axial flow waterjet propulsion specifically.

As everyone knows, adopt the boats and ships of axial flow waterjet propulsion, one or more water jet propulsion pump mostly is installed in its stern cabin, the hull bottom that is positioned at the boost pump front end has a water inlet, boost pump sucks current from water inlet during work, these current by its outlet ejection, promote boats and ships by the antagonistic force that sprays current and advance after the screw propeller of boost pump quickens.Adopt this structure, boats and ships are normally navigated by water in the abyssal zone.But when navigating by water in the shoal water zone, because the dried up end of hull bottom is very near even contact with the bottom, at this moment the water yield of hull bottom water inlet can significantly reduce, the water wretched insufficiency of boost pump suction, make the very little even forfeiture of the thrust of its generation, boats and ships are difficult to normal navigation.Especially after the water yield of hull bottom water inlet reduced, the water velocity that sucks boost pump can obviously increase, and so can cause the hydraulic pressure of hull bottom sharply to descend, and boats and ships are sunk because of stern buoyancy reduces, and beach (" at the bottom of the suction ") situation takes place to sit.

The purpose of this utility model is to provide a kind of axial flow water-jet propelled craft hull.Beach (" at the bottom of the suction ") situation can not appear sitting in this hull, can guarantee the normal navigation of boats and ships.

For achieving the above object, the utility model is taked following technical solution:

Axial flow water-jet propelled craft hull of the present utility model, the water inlet that sucks current for boost pump is arranged at its bottom, is characterized in that there is arc opening the hull bottom both sides, and this arc opening communicates with water inlet and is the line style transition.The height of the arc opening of hull both sides is 1/5～1/3 of a hull draft.

Because the two bottom sides of axial flow water-jet propelled craft hull of the present utility model has arc opening, this arc opening communicates with the water inlet of hull bottom and is the line style transition, when boats and ships in shoal water zone navigation, occur that hull bottom is less with water-bed distance, when boost pump is inhaled less than the enough water yield from the hull bottom water inlet, can be by the arc opening amount of makeup water of hull both sides to the bottom water inlet, make boost pump can suck enough water yields all the time, guarantee that boats and ships can not only navigate by water in the abyssal zone, can also normally navigate by water in the shoal water zone.Again since from hull both sides arc opening mend into water can contain the pressure decay of hull bottom, thereby avoided taking place because of the situation that stern buoyancy loss is sunk boats and ships, beach (at the bottom of the suction) phenomenon can not appear sitting.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is an axial flow water-jet propelled craft hull scheme drawing of the present utility model;

Fig. 2 is that the K of Fig. 1 is to scheme drawing;

Fig. 3 is the A-A scheme drawing of Fig. 1.

See Fig. 1, Fig. 2 and Fig. 3, axial flow water-jet propelled craft of the present utility model, its hull bottom both sides respectively process an arc opening 2, and this arc opening communicates with the water inlet 4 of hull 3 bottoms and is line style and is communicated with.Its height shipping draft 1/5～1/3 between.When boats and ships navigate by water in the shoal water zone, hull 3 bottoms are with less with water-bed distance, boost pump 1 is drawn less than enough water yields from hull 3 bottom water inlets 4, at this moment can make boost pump 1 can draw enough water yields all the time for the usefulness that advances boats and ships by arc opening 2 amount of makeup water to bottom water inlet 4.Mend the pressure decay that the water of going into also can be contained hull 3 bottoms from arc opening 2, reduce the buoyancy loss of hull stern.Thereby avoided boats and ships to take place in the seat beach of shoal water zone (at the bottom of the suction) phenomenon.

Claims

1. axial flow water-jet propelled craft hull, hull bottom have the water inlet (4) that sucks current for boost pump, it is characterized in that there is arc opening (2) the hull bottom both sides, and this arc opening communicates with water inlet (4) and is the line style transition.

2. hull according to claim 1 is characterized in that the height of the arc opening (2) of hull both sides is 1/5～1/3 of a hull draft.