KR20160094656A

KR20160094656A - Propulsion apparatus for ship

Info

Publication number: KR20160094656A
Application number: KR1020150015902A
Authority: KR
Inventors: 신유정
Original assignee: 신유정
Priority date: 2015-02-02
Filing date: 2015-02-02
Publication date: 2016-08-10

Abstract

A propelling apparatus for a ship according to the present invention comprises: an introducing tube coupled and fixed to a hull and discharging water introduced into a front end to a rear end when a ship sails; a driving shaft mounted so that one side thereof passes through the introducing tube in a widthwise direction and rotated by rotating force transmitted from a driving device; a screw mounted at a rear end side of inner spaces of the introducing tube in a rotatable structure and disposed so that a rotation axis is parallel to a longitudinal direction of the introducing tube; and a driven axis mounted to transmit the rotating force of the driving shaft to the screw and making the screw rotate when the driving shaft rotates. The propelling apparatus for a ship according to the present invention can reduce fuel costs and operation time by reducing the resistance of water applied to the screw, increase boarding comfort by reducing noise and vibration generated in the screw, and preventing damage to the screw and marine life by preventing the screw from being directly in contact with other objects.

Description

[0001] Propulsion apparatus for ship [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion device for a ship that rotates a screw to obtain propulsive force of a ship and more particularly to a propulsion device for a ship which is capable of reducing the resistance and noise of water applied to the screw, To a propulsion device.

The ship is divided by the driving force that moves it, the nodo line ㅇ sailing ship (wind power) ㅇ the steam line (the coal power ㅇ the mechanical power which uses fuel as the fuel) ㅇ the nuclear power line (the mechanical power by nuclear fuel). Currently, the name "steamer" is used to refer to the power line propelled by mechanical power, regardless of type, but the narrower steamer refers to a ship having a reciprocating engine or steam turbine engine operated by steam power, and a gasoline engine. Gas engine o Hot-valve engine o An internal combustion engine having a diesel engine is distinguished by a steam engine (ship). In addition to these two types of electric propulsion lines, there are two types of electric propulsion propulsion ships based on the distinction of their generators. Nuclear power lines are steamships that use steam to make steam using current nuclear fuel, thereby rotating the steam turbine.

Gas turbine ships, which use high temperature and high pressure gas instead of steam, have not yet reached the stage of supply except for some high-speed special ships. As for the propellers, the early stage of the steamer was a paddle-type paddle wheeler, but the screw propeller is mainly used in modern times. Screws were common in small ships with 3 wings and 4 in general, but in recent large 1 axis propellers are often used with 5 wings which are efficient. Depending on the number of propeller shafts, there are four types: 1 axis, 2 axes, 3 axes, 4 axes. In the past, the first phase was the principle of one axis, but there is also a boat of the second phase and one axis. In addition, the rotation of the propeller is determined in one direction, and the pitch of the propeller is changed by changing the angle of the wing, so that the variable pitch propeller line which can easily reverse the forward movement of the ship can be seen in the small ship.

On the other hand, a screw propeller is a propeller having three to seven wings, while a spiral surface of a propeller blade pushes out water and receives a thrust generated by the recoil, thereby advancing the ship. As a typical propulsion device for a ship, There are propulsion devices such as FPP (Fixed Pitch Propeller), CPP (Controllable Pitch Propeller) and compound propeller (CRP) and Tendem propeller.

Hereinafter, a conventional ship propulsion device will be described in detail with reference to the accompanying drawings.

1 is a side view of a ship showing a mounting structure of a conventional ship propulsion device.

As shown in FIG. 1, a propulsion system using a screw includes a rotating shaft 20 connected to a motor or an internal combustion engine and rotating, a screw (not shown) fixedly coupled to the rotating shaft 20 and positioned at the rear of the ship 10 30). As the rotary shaft 20 rotates, when the screw 30 rotates integrally, a driving force is generated due to the pressure difference between the front and rear sides of the screw 30, and the hull 10 is propelled.

However, such a conventional marine propulsion device has the following problems.

First, since the rotating shaft 20 installed for driving the screw 30 and the space for the mechanical parts are located on the flow path of the water, resistance is generated and the performance is deteriorated and noise is greatly generated .

Secondly, seawater, marine litter, and waste net are floating not only in pure water such as seawater or river running on a ship, but also in seawater, marine litter, and waste net. There is a problem that a failure occurs.

Third, since the screw 30 is directly exposed to the outside, the screw 30 may be damaged when a hard object such as a reef collides against the screw 30.

Fourth, there is a problem that marine creatures such as whales can be injured by the screw 30 rotating at a high speed.

KR 10-1336221 B1

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a screw for preventing a screw, And to provide a propulsion device.

In order to achieve the above object, according to the present invention, there is provided a propulsion device for a ship, comprising: an inlet pipe fixedly coupled to a ship and discharged into a rear end side of a ship, A drive shaft mounted on one side of the inflow pipe so as to pass through the inflow pipe in the width direction and rotated by a rotational force transmitted from a drive engine; A screw mounted on the rear end side of the inner space of the inflow pipe so as to be rotatable and having a rotation axis aligned with the longitudinal direction of the inflow pipe; And a slave shaft mounted to be able to transmit the rotational force of the drive shaft to the screw and to rotate the screw when the drive shaft rotates.

The inflow pipe is installed so as to penetrate the hull in the longitudinal direction.

The inlet pipe is divided into two parts at the tip end and is provided inside the hull, and two ends are positioned on the right and left sides of the hull and the rear end is located on the stern.

The inlet pipe is divided into two branches at its tip end side and is coupled to the left and right outer side surfaces of the hull, and the rear end side is located at the stern.

The inflow pipe has an expansion part on the rear end side, and the screw is mounted in the expansion part.

A filtering net is provided at the distal end side of the inner space of the inflow pipe.

The sieve is formed in a conical shape in which the middle portion protrudes forward.

By using the propulsion device for marine vessel according to the present invention, it is possible to reduce the resistance of water applied to the screw, thereby reducing the oil cost and operating time, reducing the noise and vibration generated from the screw, It is possible to prevent a phenomenon in which other objects come into direct contact with the screw, thereby being able to prevent screw breakage and marine life injury.

1 is a side view of a ship showing a mounting structure of a conventional ship propulsion device.
2 and 3 are a side view and a bottom view of the ship showing the mounting structure of the ship propulsion device according to the present invention.
4 is a sectional view showing the internal structure of the ship propulsion device according to the present invention.
5 is a perspective view of a sieve network included in the ship propulsion apparatus according to the present invention.
6 and 7 are a side view and a bottom view of a ship showing a mounting structure of a ship propelling apparatus according to a second embodiment of the present invention.
8 and 9 are a side view and a bottom view of a ship showing a mounting structure of a ship propelling apparatus according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a ship propulsion apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

2 and 3 are a side view and a bottom view of a ship showing a mounting structure of a ship propulsion device according to the present invention, FIG. 4 is a sectional view showing the internal structure of a ship propulsion device according to the present invention, Which is included in the propulsion system of the ship.

The propulsion device for a ship according to the present invention is configured to generate propulsive force of the hull 10 by rotating the screw 400 mounted on the stern of the ship so that the resistance of the water flowing into the screw 400 is minimized, And the speed of water flow generated by the screw 400 is concentrated to the rear so that the speed of the ship can be increased and the screw 400 is prevented from being directly exposed to the outside, ) Is constructed to prevent breakage and marine biological injury.

In other words, to achieve the above-mentioned object, the propulsion device for a ship according to the present invention comprises an inlet pipe (100) fixed to a hull (10) and discharging water introduced into a forward end side when a ship is sailing, A driving shaft 200 mounted to penetrate the inlet pipe 100 in the width direction and rotated by a rotational force transmitted from the driving engine and a rear end side of the inner space of the inlet pipe 100, A screw 400 arranged to be parallel to the longitudinal direction of the inlet pipe 100 and a screw 400 mounted to be able to transmit the rotational force of the driving shaft 200 to the screw 400, And a driven shaft 300 for rotating the driven shaft 300.

A driving gear 210 is provided at an end of a driven shaft 300 which is drawn into the inlet pipe 100 and a driving gear 210 is provided at one end of the driven shaft 300 coupled to the screw 400 The rotational force of the driving shaft 200 is transmitted to the screw 400 through the driving gear 210 and the driven gear 310. The driven gear 310 is coupled to the driving gear 210 via the driving gear 210 and the driven gear 310, ). At this time, the follower shaft 300 and the screw 400 should be installed by a separate mounting bracket so that they can be rotated only in place without moving in any direction. Although the driving gear 210 and the driven gear 310 are applied as bevel gears in the present embodiment, the driving gear 210 and the driven gear 310 may be various types of bevel gears Can be replaced by gears. That is, the driving shaft 200 and the driven shaft 300 can be connected to any structure as long as they can transmit mutual rotational force.

The water located in the front of the ship 10 is transmitted to the screw 400 through the inlet pipe 100 and the screw 400 receives the rotational force of the drive shaft 200 So that the water delivered through the inflow pipe 100 is discharged backward to generate propelling force. As described above, in the propulsion device for a ship according to the present invention, water transmitted to the screw 400 is not transmitted to the screw 400 after flowing on the front surface of the ship 10, but inside the inlet pipe 100 So that the resistance of the water is remarkably reduced and the phenomenon that the vortex is generated in front of the screw 400 does not occur. That is, if the resistance of water flowing to the screw 400 side is reduced and no vortex is generated, the screw 400 can be rotated with a smaller power, so that the power required to navigate the vessel can be reduced, Thereby reducing the cost of navigation.

Since the screw 30 applied to the conventional vessel is exposed to the outside, a certain amount of water discharged by the screw 30 is dispersed not only in the backward direction but also in the vertical direction and the lateral direction, It has a disadvantage that it is not used. However, since the screw 400 applied to the marine propulsion device according to the present invention is surrounded by the inlet pipe 100 in the up and down and left and right directions, the water discharged through the screw 400 is not dispersed vertically and horizontally, The force exerted by the screw 400 is utilized for advancing the hull 10, which is advantageous in that the efficiency is increased. In addition, since the screw 400 is surrounded by the inlet pipe 100, the noise generated during the rotation of the screw 400 is conducted only to the rear, thereby reducing the noise generated during the operation of the ship.

In the propulsion device for a ship according to the present invention, the screw 400 is installed inside the inlet pipe 100, and the inlet pipe 100 is inserted into the inside of the ship 10, So that it is possible to prevent the phenomenon that the screw 400 is broken by a hard object such as a reef or the like. At this time, the inlet pipe 100 is provided with an enlarged tube portion 110 at the rear end side so as not to interfere with the inner side surface of the inlet tube 100 when the screw 400 rotates, 110).

The front end of the inflow pipe 100 is extended so that the water positioned in front of the hull 10 flows more smoothly into the inflow pipe 100 and the flow of the water introduced into the inflow pipe 100 In order to minimize the resistance, it is preferable that the inflow pipe 100 is formed as a straight pipe passing through the hull 10 in the longitudinal direction as shown in FIG.

If the foreign matter is introduced into the inflow pipe 100, the inflow pipe 100 may be entangled with the screw 400 or may break the screw 400. Therefore, . 5 (a), when the sieve 120 is formed in a planar shape, the foreign matter is accumulated in the front of the sieve 120, A phenomenon that the flow path of the inflow pipe 100 is clogged may occur.

Accordingly, the sieve 120 may be formed in a conical shape in which the middle portion protrudes forward as shown in FIG. 5 (b). When the sieve 120 is formed in a conical shape, the foreign matter flows sideways on the inclined surface of the sieve 120, even if the foreign material approaches the front end of the inlet pipe 100, So that the flow path of the inflow pipe 100 is not clogged.

6 and 7 are a side view and a bottom view of a ship showing a mounting structure of a ship propelling apparatus according to a second embodiment of the present invention.

2 and 3, when the inflow pipe 100 is installed to penetrate the hull 10 in the longitudinal direction, the entire hull 10 must be removed in order to install the inflow pipe 100, It may be difficult to install the inlet pipe 100 in the completed vessel. Particularly, when the inflow pipe 100 can not pass through due to the structure located at the center of the hull 10, there is a problem that it is impossible to install the inflow pipe 100 with the structure shown in FIG. 2 and FIG.

Therefore, the inlet pipe 100 is configured such that the leading end side into which the water flows is located at the side of the hull 10, as shown in Figs. 6 and 7, rather than at the front of the hull 10 . At this time, if the leading end side of the inflow pipe 100 is formed on only one side of the left and right sides of the hull 10, there is a possibility that the balance of the hull 10 is collapsed. In the inflow pipe 100, And the two ends are located on the left and right sides of the hull 10, respectively. At this time, the expanded portion 110 provided at the rear end side of the inflow pipe 100 should be located at the back of the ship 10, that is, at the forefront, as in the embodiment shown in FIGS.

When the leading end side of the inflow pipe 100 is formed into a shape divided into two parts, that is, a Y shape, the water flowing on the left and right side surfaces of the hull 10 flows through the pair of inflow pipes 100 It is possible to reduce resistance and vortex of water applied to the screw 400, thereby enabling more efficient operation of the ship. In addition, it is expected that the noise generated from the screw 400 can be reduced, the screw 400 can be prevented from being damaged, and the marine biological injury can be prevented. These effects can be achieved by the effects of the embodiment shown in FIGS. 2 and 3 The detailed description thereof will be omitted.

8 and 9 are a side view and a bottom view of a ship showing a mounting structure of a ship propelling apparatus according to a third embodiment of the present invention.

The inflow pipe 100 may be installed on the outer surface of the hull 10 when the inflow pipe 100 can not be inserted into the hull 10 according to the characteristics of the ship.

That is, as shown in FIGS. 8 and 9, the inlet pipe 100 may be divided into two bifurcations to be coupled to the left and right outer surfaces of the hull 10. Also in this case, the expanded portion 110 provided at the rear end of the inflow pipe 100 may be located at the stern, and the screw 400 may be installed in the expanded portion 110.

Even if the tip of the inflow pipe 100 is installed on the left and right outer sides of the hull 10, the water applied to the screw 400 is transmitted through the inflow pipe 100, It is possible to reduce the resistance and vortex generation of the applied water, thereby enabling a more efficient operation of the ship. Of course, as shown in this embodiment, when the inflow pipe 100 protrudes to the outside of the hull 10, the resistance of water by the inflow pipe 100 may be increased to some extent. However, There is an advantage that the propulsion device according to the present invention can be easily applied.

Also, in the case of the present embodiment, it is expected that the noise generated in the screw 400 can be reduced, the damage of the screw 400 can be prevented, and the marine biological injury can be prevented. The detailed description thereof will be omitted.

In the present embodiment, only one end of the inflow pipe 100 is divided into two, and one end of the inflow pipe 100 is provided on each of the left and right sides of the ship 10, Two or three pieces may be provided on the left and right sides of the ship 10, respectively. That is, the inlet pipe 100 can be changed into any shape as long as it can supply water to the screw 400 mounted on the rear end side of the inner space.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: Hull 100: Inflow pipe
110: expansion part 120:
200: drive shaft 210: drive gear
300: follower shaft 310: driven gear
400: Screw

Claims

An inlet pipe (100) fixedly coupled to the hull (10) and discharging the water introduced into the forward end side when the ship is sailing, to the rear end side;
A driving shaft (200) mounted at one side to penetrate the inlet pipe (100) in a width direction and rotated by a rotational force transmitted from a driving engine;
A screw 400 mounted on the rear end side of the inner space of the inflow pipe 100 so as to be rotatable and having a rotation axis aligned with the longitudinal direction of the inflow pipe 100;
A driven shaft 300 mounted to be able to transmit the rotational force of the drive shaft 200 to the screw 400 and to rotate the screw 400 when the drive shaft 200 rotates;
And a propulsion device for a ship.

The method according to claim 1,
Wherein the inlet pipe (100) penetrates the hull (10) in the longitudinal direction.

The method according to claim 1,
The inlet pipe 100 is divided into two parts at the front end side and installed in the inside of the hull 10 so that the two ends are positioned on the left and right sides of the hull 10 respectively and the rear end side is located on the stern Wherein the propulsion device comprises:

The method according to claim 1,
Wherein the inlet pipe (100) is divided into two bifurcations to be coupled to the left and right outer sides of the hull (10), and the rear end side is located at the stern.

The method according to any one of claims 1 to 4,
Wherein the inlet pipe (100) has an expansion part (110) at the rear end side, and the screw (400) is installed in the expansion part (110).

The method according to any one of claims 1 to 4,
Wherein a sieve net (120) is provided at a tip end of an inner space of the inflow pipe (100).

The method of claim 6,
Wherein the sieve net (120) is formed in a conical shape in which a middle portion protrudes forward.