WO2016153095A1

WO2016153095A1 - Duct-type propulsion device for vessel

Info

Publication number: WO2016153095A1
Application number: PCT/KR2015/002963
Authority: WO
Inventors: 나윤철; 백정윤
Original assignee: 삼우중공업 주식회사
Priority date: 2015-03-26
Filing date: 2015-03-26
Publication date: 2016-09-29

Abstract

Disclosed is a duct-type propulsion device for a vessel. The duct-type propulsion device for a vessel disclosed herein comprises: a duct unit which is provided on a vessel body and has an impeller rotatably installed inside thereof; and a fluid induction unit connected to the duct unit so as to downwardly induce a fluid discharged from the duct unit by rotation of an impeller. As such, the duct-type propulsion device for a vessel can enhance propulsion force by reducing the area of contact between the bottom area of the vessel and the fluid which generates the propulsion force caused by the rotation of the impeller.

Description

Duct type propeller of ship

The present invention relates to a chin-type propeller for a ship, and more particularly, a duct type propeller of a ship to improve the propulsive force by reducing the contact area in which the fluid generating the propulsion force in contact with the bottom of the ship according to the rotation of the impeller. It is about.

In general, a propulsion device generates a propulsion force for pushing a vessel or submersible when moving a ship or submersible in the water or underwater. The ship propulsion system applied to the double vessel is manufactured and used in various forms according to the characteristics of the vessel and the purpose of use.

Such propulsion devices for ships include controllable pitch propellers, counter-rotating propellers, waterjet propellers, and azimuth Thrusters.

Recently, as the ship's capacity increases and the required work is advanced, such as drillships, offshore plants, and offshore work vessels, many ships need to move quickly to other areas while continuously working in one place. Accordingly, the use of Azimuth Thruster, which is a pivotal propulsion device capable of rotating 360 degrees, is rapidly increasing in the lower part of the hull.

Since the azimus spurs have a propeller installed in a pod which rotates 360 degrees in the horizontal direction, unlike the propulsion by the fixed shaft propeller and the key, the ship can be moved in any direction and the current position can be maintained accurately.

Such azimuth thrusters are generally divided into parts for rotating the propeller itself and parts for rotating the propeller by transmitting power generated from the engine, and a propeller generating propulsion is installed in the duct rotatably installed in the ship. do. In addition, it is common that two to six easy thrusters are installed depending on the state of the sea or the purpose of the ship.

In the conventional azimus thruster as described above, since the fluid discharged from the duct is directly in contact with the bottom of the ship, the contact area between the fluid generating the propulsion force and the ship is increased, thereby reducing the propulsion force. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, and provides a duct type propeller of a ship that can improve the propulsion by reducing the contact area of the fluid generating the propulsion force in contact with the bottom of the vessel according to the rotation of the impeller. Its purpose is to.

In order to achieve the above object, a duct type propeller of a ship according to an embodiment of the present invention includes: a duct part rotatably installed in the hull; And a fluid induction part coupled to the duct part to guide the fluid discharged from the duct part downward by the rotation of the impeller.

In addition, the fluid guide portion is inclined downwardly coupled to the duct portion, it characterized in that a plurality of spaced apart is installed in the duct portion.

In addition, the fluid guide portion is provided in a plurality of spaced apart in the duct portion in the air-shaped cross-sectional structure of the hollow shape, characterized in that the separation distance gradually increases toward the upper side or the lower side from the center of the duct portion.

In addition, the fluid guide portion is characterized in that it comprises a coupling portion at both ends to be coupled to the outer surface in contact with the duct portion.

Unlike the prior art, the duct-type propeller of a ship according to the present invention, since the fluid discharged from the duct part flows in the lower direction of the hull by the fluid induction part in accordance with the rotation of the impeller, the contact area of the fluid generating thrust and the bottom of the ship This can be reduced to improve propulsion.

1 is a perspective view showing a duct type propeller of a ship according to a first embodiment of the present invention.

2 is a front view of FIG. 1.

3 is a cross-sectional view of FIG. 1.

4 is a perspective view showing a duct type propeller of a ship according to a second embodiment of the present invention.

5 is a side view of FIG. 4.

6 is a cross-sectional view of FIG. 4.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the duct-type propeller of the ship according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

First, a duct type propeller of a ship according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is a perspective view showing a duct type propeller of a ship according to a first embodiment of the present invention, Figure 2 is a front view of Figure 1, Figure 3 is a cross-sectional view of FIG.

As shown in Figures 1 to 3, the duct type propeller 100 of the ship according to the present embodiment is installed on the bottom of the ship to be used to move or turn the ship.

Such, the duct type propeller 100 of the vessel is coupled to the duct portion 110 and the duct portion 110 is rotatably installed on the bottom of the ship via the steering module 10 to prevent the propulsion of the vessel is lowered, the duct It includes a fluid guide portion 120 for inducing the flow of fluid discharged from the portion (110).

The duct part 110 is rotatably installed an impeller 111 generating a propulsion force therein, and is formed in a hollow shape. In addition, the duct 110 is rotated at the bottom through the steering module (10).

Such, the duct unit 110 generates a driving force for moving the vessel while the fluid flowing in the front is discharged to the rear through the rotation of the impeller 111, the fluid discharged from the inside is lowered by the fluid guide unit 120 Discharged in the direction.

The fluid guide part 120 allows the fluid discharged from the duct part 110 through the impeller 111 to flow downwardly of the hull to prevent the contact area of the ship bottom and the fluid generating the propulsion force from being reduced. Thereby, the propulsion force of a ship can be improved further.

In addition, a plurality of fluid induction parts 120 are provided to be spaced apart from the inside of the duct part 110, and both ends are joined to the inner surface of the duct part 110. The fluid induction part 120 is installed to be inclined downward in the duct part 110 to more efficiently reduce the contact of the fluid discharged from the duct part 110 to the bottom.

Specifically, the fluid induction part 120 is installed to be inclined downward by 5 to 10 degrees with respect to the horizontal extension line in the duct part 110. At this time, when the inclination angle of the fluid guide part 120 is less than 5 degrees, since the fluid discharged from the duct part 110 is not smoothly guided to the lower side of the duct part 110, the contact area with the bottom part is insignificant. In addition, when the inclination angle of the fluid induction part 120 exceeds 10 degrees, the contact area of the fluid discharged from the duct part 110 and the bottom is further reduced, but the occurrence of vortices on the upper surface of the fluid induction part 120 increases. Propulsion is significantly reduced.

In addition, the fluid guide portion 120 has a hollow airfoil structure to further improve the driving force while further reducing the contact area between the fluid discharged from the duct 110 and the bottom portion. As such, when the fluid induction part 120 is formed to have a cross-sectional structure of the airfoil, the flow rate discharged to the lower surface of the fluid induction part 120 is faster than the upper surface, thereby further improving the effect of reducing the contact area of the fluid and the bottom portion.

In addition, the fluid guide portion 120 is installed to gradually increase the separation distance toward the upper side or the lower side with respect to the center portion of the duct portion 110.

Specifically, the fluid induction part 120 according to the present embodiment is provided on the upper side and the lower side, respectively, based on the center portion of the duct portion 110, each of the fluid induction portion adjacent to each other around the center portion of the duct 110. The separation distance of 120 is the closest.

In the present embodiment, for example, it is described that the six fluid guide portion 120 is provided, but may be installed less than six or more than seven according to the needs of the user.

The operation of the duct-type propeller of the ship according to the first embodiment of the present invention having the configuration as described above will be described.

First, when the impeller 111 of the duct part 110 rotates, the fluid flows through the front of the duct part 110 and is discharged to the rear of the duct part 110 so that the fluid flows to generate a driving force for moving the vessel. .

At this time, the fluid discharged from the duct unit 110 is guided to the lower side of the duct unit 110 by the fluid induction unit 120 provided inside the duct unit 110. As a result, the area of the fluid discharged from the duct 110 is in contact with the bottom of the ship is reduced to prevent the fall of the propulsion force of the ship.

In addition, since the fluid induction part 120 is installed to be inclined downward in the duct part 110 while having the airfoil structure, the contact area between the fluid discharged from the duct part 110 and the bottom may be further reduced. As a result, the contact area of the fluid discharged from the duct part 110 with the bottom of the ship can be minimized to further improve the propulsion of the ship.

Next, a duct type propeller of a ship according to a second embodiment of the present invention will be described with reference to FIGS. 4 to 6.

6 is a view showing a state in which the freeze protection device of the water system according to the second embodiment of the present invention is applied to the pipe, Figure 7 is an exploded perspective view showing the freeze protection device of the water system according to the second embodiment of the present invention 8 is a cross-sectional view of the coupling of FIG.

In describing the apparatus for preventing freezing of water facilities according to the second embodiment of the present invention, the same reference numerals are used for the same components as those of the first embodiment, and the detailed description thereof will be omitted.

Hereinafter, in describing the duct type propeller of the ship according to the present embodiment, the same reference numerals are used for the same components as those of the first embodiment, and the detailed description thereof will be omitted.

4 is a perspective view showing a duct type propeller of a ship according to a second embodiment of the present invention, Figure 5 is a side view of Figure 4, Figure 6 is a cross-sectional view of FIG.

4 to 6, the duct type propeller 100 of the ship according to the present embodiment is a duct section 110, the impeller 111 is rotatably installed, and discharged from the duct section 110 It includes a fluid guide portion 120 to guide the fluid to the lower direction of the duct portion 110.

The fluid guide part 120 is coupled to the duct part 110 so as to be located outside the duct part 110 to guide the fluid discharged from the duct part 110 by the impeller 111 to the lower direction of the duct part 110. do.

The fluid induction part 120 has coupling parts 121 formed at both ends thereof to be joined to the outer surface of the duct part 110. Specifically, the fluid guide portion 120 is the front end thereof in contact with the rear end of the duct portion 110, the coupling portion 121 is formed to protrude forward from both ends. And the inner surface of the coupling portion 121 is joined to the side of the duct portion 110 by a welding method.

As such, the fluid induction part 120 may be joined to the duct part 110 while the coupling part 121 is formed at both ends thereof while maintaining a sufficient bearing force with the duct part 110.

As such, the duct-type propeller 100 of the ship according to the present embodiment, since the fluid induction part 120 is exposed to the rear of the duct part 110, the fluid discharged from the duct part 110 and the bottom of the bottom () The contact area can be further reduced.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

Claims

An duct part rotatably installed in the hull and provided in the hull; And

A fluid induction part coupled to the duct part to guide the fluid discharged from the duct part downward by the rotation of the impeller;

Duct type propeller of the ship comprising a.
The method of claim 1,

The fluid induction part is coupled to the duct portion is inclined downward, the duct type propeller of the ship, characterized in that a plurality of spaced apart is installed in the duct portion.
The method of claim 1,

The fluid guide portion is provided in the hollow form a plurality of airfoil cross-section spaced apart from the duct portion, the duct type propeller of the ship, characterized in that the separation distance gradually widens toward the upper side or the lower side from the center of the duct portion.
The method according to any one of claims 1 to 3,

The fluid guiding part of the ship duct type propeller, characterized in that the coupling portion is provided at both ends to be coupled to the outer surface of the duct.