CN2429433Y

CN2429433Y - Device for reducing wave resistance force for sailing ship

Info

Publication number: CN2429433Y
Application number: CN98216893U
Authority: CN
Inventors: 白鄯村
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-11
Filing date: 1998-07-11
Publication date: 2001-05-09
Anticipated expiration: 2008-07-11

Abstract

The utility model relates to a device for reducing wave resistance force for a sailing ship, which is characterized in that one or a plurality of water delivery pipelines are arranged below a water surface line of a ship body; openings of the pipelines are arranged at the ship head and the ship tail; a propeller is arranged at the middle of the pipelines. When the ship sails, the propeller sucks water body at the ship head into the pipelines, and the water body is transmitted to the ship tail to be discharged. Thus, the utility model has the advantage that the wave resistance force is reduced during the sailing of the ship.

Description

Reduce the device of ship's navigation wave making resistance

Technical field is to belong to the invention of communications and transportation B63 boats and ships class under the application's case.

Article in the relevant boats and ships knowledge of the normal publication of the science popularization periodical of the fifties, as catamaran, air cushion vehicle, hydrofoil boat, cause my concern gradually, many decades does not have message, in recent years the report that sees suddenly has the people to propose a kind of new theory that improves the speed of a ship or plane, do not become effective according to cloud, cause huge blame, learn that later on this scheme just changes into the installation site of propeller about midbody on two outsides, its effect is good not as good as the existing scheme that is arranged on stern, and it is that propeller too exposes that this scheme is given people's first impression, easy damaged, original in fact marine powerplant just is provided in a side of the hull left and right sides, as: wood pulp that manpower is rowed the boat, once seen an American film again, the classic steamer that navigates by water on Mississippi is wherein arranged, and two huge power water wheels of diameter just are installed in the midbody outside, and are very slow-witted.

Existing background technology situation: be arranged on the scheme of stern by existing public propeller, 2 deficiencies are arranged: 1, the hull center of gravity is at the boats and ships medium position, and propelling thrust acts on stern, resembles the sub-variety show of taking over a business of acrobatics team, and stability is not good enough.2, during ship's navigation, the stern water body is a zone of negative pressure, and propeller places in the zone of negative pressure, and obviously the efficient of propeller is difficult to comprehensive performance, is similar on the sandy beach and walks, and skids under the sole.

State when observing ship's navigation can be found out: when boats and ships are static, water body is the equipotentiality position all around, during ship's navigation, bow causes surfing, this is a wave making resistance, speed is higher, wave making resistance is bigger, and this bow surfing is a zone of positive pressure, and the stern water body depression occurs and is zone of negative pressure, and the raising that to be synergy hinder ship's speed of this zone of positive pressure and zone of negative pressure, solve this running resistance, problem is exactly how bow resistance water body to be transported to stern fast, fills the depression of stern water body, and do not answer the water body of disturbance boats and ships two sides and hull bottom face, otherwise the power of dissipation driving engine.

The purpose of the application's case: be when reducing ship's navigation, because the formed wave making resistance of bow surfing.

The effective technology scheme that the application's case is proposed is below the boats and ships water surface curve, in ship hull or the ship two sides, or on the hull bottom face, water pipe is set, pipeline tapping is in the through stern of bow, the outside water body of UNICOM's shell, and propeller just is arranged on inside near the pipeline among the pipeline total length, so this programme also is located at propeller the midbody position, just do not expose.

The size of water pipe longitudinal cross-section is as the criterion with the propeller diameter, is horn-like diffuser pipe to bow and the extension of stern direction, is beneficial to improve propeller efficient, and also can adopt total length is the pipeline of drum type brake, and the water pipe total length can be by the hull lengths arrangement.Bow portion water inlet also may extend to outside, bow the place ahead, is beneficial to water inlet in advance, reduces surfing.

The quantity of water pipe can be set up by the degree of depth of shell water surface curve, and the canoe that water surface curve is shallow, water pipe can be arranged at hull bottom partly.

The beneficial effect of the application's case: adopt the boats and ships of lose-lose waterpipe, when changing course, can change the rotating speed of left and right sides propeller difference, can alter course.Left and right propeller one side is just changeed, and side counter-rotating gets final product pivot turn.The filtering net of suitable mesh to be set, stoping floating debris such as the wooden unit on the water surface, in suction such as empty glass bottle and the water pipe in bow water pipe entrance.

Implement illustration: the propeller scheme drawing is installed in water pipe and the pipeline, and the chart left side is the bow orientation, and the right side is the stern orientation.

Fig. 1, near the boat bottom and arranged on left and right sides water pipe is installed respectively below water surface curve, the pipeline vertical section is diffused or column type person.

Fig. 2, for below water surface curve, and arranged on left and right sides is respectively installed two-layer water pipe or is set up and is multilayer person on above-below direction, and the pipeline vertical section is diffusion cast or column type person.

Fig. 3, be below water surface curve, three water pipes in left, center, right are installed by portion alow, and the pipeline vertical section is the column type person for the diffusion cast.

Optimum implementation: be to adopt the normal diffuser pipe of using in the fluid mechanics, promptly the forward and backward side's aperture area of pipeline is bigger, and by preceding, shrink to the middle part back, becomes the horn-like diffuser pipe of two supporting back backrest types.

Claims

1, a kind of device that reduces the ship's navigation wave making resistance, by shell, water pipe, propeller is formed, it is characterized by: water pipe is installed, and is opened on below the shell water surface curve, from the straight-through stern of bow, the outside water body of UNICOM shell, propeller are installed among the pipeline total length within the section water pipe.

2, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, it is characterized in that: be installed in the hull and arranged on left and right sides or be arranged separately on the hull axis.

3, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, it is characterized in that: three water pipes in left, center, right are installed on the boats and ships bottom surface.

4, according to the device of the described ship's navigation wave making resistance of claim 1, it is characterized in that: many water pipes are installed on the hull vertical direction.

5, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, it is characterized in that: forward and backward opening is horn-like diffusion tubular type water pipe.

6, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, use the cylinder water pipe.

7, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, it is characterized in that: the bow water inlet may extend to the outer dead ahead of hull.

8, according to the device of the described minimizing ship's navigation wave making resistance of claim 1, it is characterized in that: the filtering net of suitable mesh is installed in bow water pipe entrance.