KR101779217B1 - Apparatus for improving of propulsion for ship - Google Patents

Apparatus for improving of propulsion for ship Download PDF

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Publication number
KR101779217B1
KR101779217B1 KR1020120143459A KR20120143459A KR101779217B1 KR 101779217 B1 KR101779217 B1 KR 101779217B1 KR 1020120143459 A KR1020120143459 A KR 1020120143459A KR 20120143459 A KR20120143459 A KR 20120143459A KR 101779217 B1 KR101779217 B1 KR 101779217B1
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South Korea
Prior art keywords
duct
port
ship
pair
upright
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KR1020120143459A
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Korean (ko)
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KR20140075927A (en
Inventor
이강훈
신현준
김관훈
한명륜
이창열
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현대중공업 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

[0001] The present invention relates to a propulsion improving device for a ship, and more particularly, to a port side (port side) of a boss stern (5) in front of a propeller (not shown) coupled to a boss stern (5) A pair of first and second side fins 10 and 20 extending to the side of the pair of first and second side fins 10 and 20 and a center pin 30 vertically disposed at the center of the pair of first and second side fins 10 and 20, And a duct (40) connecting the first and second side pins (10, 20) and the upper end of the center pin (30), wherein the pair of first and second side The eccentric structure in which the pins 10 and 20, the center pin 30 and the duct 40 are eccentrically biased toward the port of the ship.
Therefore, it is possible to basically control the upward flow rising from the port side to effectively reduce the load on the duct, thereby enhancing the safety of the duct structure. Further, by the upright structure of the port side duct, It is possible to improve the thrust and to minimize the frictional resistance to the water flow according to the shape of the arcuate shape of the duct, Effect is obtained.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

[0001] The present invention relates to a propulsion enhancement device for a ship, and more particularly to a propulsion improvement device for a ship, which comprises a pair of first and second side pins coupled to a boss stern which is a stern of a ship, Wherein the first side pin has an eccentric structure in which the duct connecting the upper end of the center pin and the upper end of the center pin is eccentrically biased toward the upper side of the port of the ship and the first side pin has an inclined structure inclined upward by a predetermined angle with respect to a horizontal line, And the ducts are formed in such a way that the sizes of the cords of the round portions are formed to be different from each other, so that the upward flow rising from the port side is basically rotated in the direction opposite to the direction of rotation of the propeller, It is possible to properly prevent the flow of the ascending current due to the upright structure of the port side duct, And more particularly, to a propulsion enhancement device for a ship which can minimize frictional resistance to a water flow by a toothed cord shape.

Generally, for a ship including a ship, the principle of advancing by using the flow of the fluid generated when the propeller attached to the so-called bosstun, which is the back of the hull, is applied.

In order to achieve a constant speed through the rotation of the propeller, the engine must be driven by using an oil such as diesel. In this case, a large amount of oil is consumed, thereby causing environmental problems such as a large amount of greenhouse gas being discharged. .

In order to solve these problems, various propulsion (power) improving devices have been proposed. In particular, the shape of the tail, propeller, rudder, etc. of the ship is improved or a separate additive is attached, A variety of structures are proposed.

Among these prior art propulsion enhancement devices, there is a device for appropriately controlling the flow of upward flow generated by the propeller by providing a pair of side pins on the boss stern adjacent to the propeller and a duct structure supported by the center pin Is widely applied to various ships.

However, such a conventional duct structure has a problem that since the port-side side fin is formed in a horizontal structure, the resistance against the upward flow rising on the port side increases, resulting in an increase in the load on the duct there was.

In addition, since the duct structure connected to the port-side side fin has a round structure, it has a problem that the flow of the upward flow can not be blocked properly.

In addition, since the cord shape of the duct is the same across the entire length of the left and right channels, the frictional resistance against the flow of water is increased, which causes a problem of increasing the load on the duct and obstructing the improvement of the thrust .
Prior art relating to the propulsion improvement device is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0068223 (June 27, 2012), Korean Patent Laid-Open Publication No. 10-2012-0063247 (June 15, 2012) And is disclosed in Laid-Open Publication No. 10-2012-0068250 (June 27, 2012).

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve such a problem, and it is an object of the present invention to provide a stator of a ship, which comprises a pair of first and second side pins coupled to a boss stern, The duct connecting the upper ends of the pins is eccentrically eccentrically biased in the upward direction of the port of the ship, and the first side pins have an inclined structure inclined upward by a predetermined angle with respect to the horizontal line, And to improve the safety of the duct structure by mitigating the impact caused by the temporary large force such as slamming by changing the rotating direction of the ascending flow.

Further, since the duct portion connected to the end portion of the first side fin has an upright structure, it is possible to properly prevent the flow of the upward flow by the upright structure of the port side duct, Another purpose is to provide a propulsion enhancing device.

In addition, since the sizes of the round bar codes of the ducts are formed to be different from each other, the frictional resistance against the water flow according to the arcuate code shape of the duct can be minimized, thereby contributing to the improvement of the thrust. There is another purpose in providing a device.

In order to achieve the above-mentioned object, the present invention provides a propulsion improvement apparatus for a ship, comprising a port side (starboard side) and a starboard side (starboard side) of the boss stunne which is in front of a propeller that is coupled to a boss stern, A pair of first and second side pins extending respectively; A center pin disposed upright at the center of the pair of first and second side pins; And a duct connecting the first and second side pins and the upper end of the center pin, wherein the pair of first and second side pins, the center pin, and the duct are connected to a port And an eccentric structure which is biased upwardly and eccentrically.

Further, in the propulsion improvement apparatus for a ship according to one embodiment of the present invention, the first side fin extending to the port side of the ship is provided with a port direction horizontal line to reduce a load applied to the duct by an upward flow rising from the port side It may be an inclined structure inclined upward by a predetermined angle.

In the propulsion improving device for a ship according to one embodiment of the present invention, the duct portion connected to the end portion of the first side fin is provided with an upright portion having an upright structure in order to block an upward flow of fluid rising from the port Lt; / RTI >

Further, in the propulsion improvement apparatus for a ship according to one embodiment of the present invention, the second side fin is inclined upwardly inclined such that the second side fin is positioned lower than the upper end height of the upright portion, And a round portion connected to the upper end of the side fin in a curved shape.

Further, in the propulsion improvement apparatus for a ship according to one embodiment of the present invention, the round portions of the duct may be formed with different sizes of cords.

Further, in the propulsion improvement apparatus for a ship according to one embodiment of the present invention, the round portion of the duct may have a planar arch structure in which a cord at a central portion thereof is small and cords at both ends thereof are largely formed.

Further, in the propulsion improvement apparatus for a ship according to one embodiment of the present invention, the arch structure of the round portion may have a curvature such that both ends of the arch structure symmetrically with respect to the center portion.

As described above, the propulsion improvement apparatus for a marine vessel of the present invention comprises a pair of first and second side fins coupled to a boss stern which is the stern of a ship, a center pin at the center thereof, The duct connecting the upper ends of the pins is eccentrically eccentrically biased toward the port direction of the ship and the first side pins are inclined at a predetermined angle with respect to the horizontal line so that they basically rise from the port side The upward flow is rotated in the direction opposite to the direction of rotation of the propeller, thereby improving the efficiency of the propeller and reducing the load caused by the impact, thereby improving the safety of the duct structure.

Further, by making the duct portion connected to the end portion of the first side fin to have an upright structure, it is possible to properly block the flow of the upward flow by the upright structure of the port side duct and to obtain the effect of generating thrust.

In addition, since the sizes of the round bar codes of the ducts are formed to be different from each other, frictional resistance against the water flow according to the arcuate cord shape of the duct can be minimized, .

1 is a perspective view illustrating a propulsion improvement device for a ship according to an embodiment of the present invention.
FIG. 2 is a front view of a marine propulsion improvement apparatus according to an embodiment of the present invention as viewed from the stern.
3 is a plan view of a propulsion improvement device for a ship according to an embodiment of the present invention.
4 is a side view of the propulsion improving apparatus for a ship according to an embodiment of the present invention, viewed from the port side.
5 is a side view of the propulsion improvement device for a ship according to an embodiment of the present invention as viewed from a starboard side.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 5, the propulsion improvement apparatus for a ship according to an embodiment of the present invention includes a propulsion unit (not shown) which is coupled to a boss stern 5, which is a stern of a ship, A pair of first and second side pins 10 and 20 extending to the port side (port side) and the starboard side (starboard side) of the first and second side pins 5 and 20, respectively; And a duct (40) connecting the first and second side pins (10, 20) and the upper end of the center pin (30) to each other, The eccentric structure in which the pair of first and second side fins 10 and 20, the center pin 30 and the duct 40 are eccentrically biased toward the port of the ship.

Here, the pair of first and second side fins 10 and 20 and the duct 40 may be integrally connected to each other successively.

The port side eccentric structure of the marine propulsion enhancement device improves the efficiency of the propeller by regulating the upward flow generated by the propeller and rising from the port side to a larger amount than the existing central axial position structure.

 The first side fin 10 extending to the port side of the ship is connected to the port 40 by a predetermined angle with respect to the port direction horizontal line to reduce the load (pressing force) applied to the duct 40 by the upward flow rising from the port. The upward slope has an inclined structure.

A portion of the duct 40 connected to an end of the first side fin 10 is provided with an upright portion 41 having an upright structure for preventing upward flow of upward flow from the port and for obtaining thrust have.

The second side fin 20 is inclined upward from the upper end of the upright portion 41 and the duct 40 is inclined upward from the upper end of the upright portion 41, And a round portion 42 connected to the upper end of the two side pins 20 in a curved shape.

Asymmetric structure of the first and second side fins 10 and 20 and the duct 40 causes a rising flow in the port and starboard when the propeller rotates in the clockwise direction, And the rising flow rising in starboard does not interfere with the flow of the fluid, so that the loss of propulsion efficiency can be minimized.

In this case, the upward flow of the port and starboards is a phenomenon in which, for example, in the state where a rising current is generated in the left and right sides due to the natural water flow phenomenon before the rotation of the propeller shaft, The rising flow intensity of the port side becomes stronger and the rising flow intensity of the starboard side becomes weaker while the rising flow of both sides becomes continuously generated.

The round portion 42 of the duct 40 is formed to have a different chord size so that the round portion 41 of the duct 40 is positioned at the center of the ship The arch structure of the round portion 42 has a curvature such that both ends of the arched structure are symmetrical with respect to the center portion.

The center pin 30 is also erected eccentrically from the central axis of the boss ston 5 to the port side so as to stop the upward flow caused by the upright portion 41 on the left side of the duct 40, And also functions as a support for supporting the structure of the duct 40 from the center.

The center pin 30 has a length in the front-rear direction of its lower end and is inclined rearward as it goes upward, so that the length of the upper end of the center pin 30 is shortened, thereby preventing the center pin 30 from being tilted forward. .

The pair of first and second side fins 10 and 20, the center pin 30 and the duct 40 preferably have a general airfoil shape having an inwardly convex structure in order to improve thrust.

The propulsion improving device for a ship according to one embodiment of the present invention having such a configuration is provided with the center pin 30 so as to stand upright in a state eccentric from the central axis of the boss stunn 5 in the upward direction of the port.

The first side pin 10 is extended upward by a predetermined length so as to be inclined upward with respect to the central horizontal axis of the boss stun 5 and the second side pin 20 is extended from the first side pin 10 An upright portion 41 of the duct 40 extending upright on the extending end of the first side fin 10 is provided.

At this time, the upright portion 41 of the duct 40 sets its upright upright length so as to extend higher than the upwardly extending end of the second side pin 20. [

The upper end of the upright portion 41 of the duct 40 and the upper end of the second side fin 20 are connected to each other by the round portion 42 of the duct 40, The upper end of the center pin 30 is connected to complete the shape of the duct 40.

Here, the round portion 42 of the duct 40 has a planar arch structure with a small cord at its central portion.

In the meantime, the duct structure may be divided into individual components to complete the final duct structure through sequential connection operations, or the first and second side fins 10 and 20 and the duct 40 may be integrated with each other. And then connect to the center pin 30 to complete the final duct structure.

When the propeller is rotated in the clockwise direction by the completed duct structure, when a rising flow occurs in the port and starboard windings, the upward flow rising to the port is blocked, and the rising flow rising in the starboard obstructs the flow of the fluid So that the loss of propulsion efficiency can be minimized.

In addition, the center pin 30 can block the flow of upward flow behind the upright portion 41 of the duct 40, and the frictional resistance of the center pin 30 can be reduced by the arcuate round portion 42 of the duct 40. [ So that the propulsion efficiency can be maximized as a result.

As described above, the propulsion improvement apparatus for a ship according to an embodiment of the present invention includes a pair of first and second side pins coupled to a boss stern that is a stern of a ship, a center pin at the center thereof, The duct connecting the pin and the upper end of the center pin has an eccentric structure eccentrically biased by the port direction of the ship and the first side pin has an inclined structure inclining upward at a certain angle with respect to the horizontal line, The duct structure can be improved in safety by reducing the load on the duct as a result, and the duct portion connected to the end portion of the first side fin can be prevented from rising The flow of the upward flow can be properly blocked by the upright structure of the port side duct, and the thrust can be improved And also, it is possible that the size of the rounded portion codes of the duct may by be formed different from each other, while the frictional resistance to the water flow of the arcuate cord shape of the duct can be minimized thus added to help thrust enhancement.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It should be understood that all of the techniques that can be easily changed and used by those skilled in the art are included in the technical scope of the present invention.

DESCRIPTION OF REFERENCE NUMERALS
5: Bosstoun 10: 1st side pin
20: second side pin 30: center pin
40: duct 41:
42:

Claims (7)

A pair of first and second side pins each extending to a port side (port side) and a starboard side (starboard side) of the boss stunner in front of a propeller coupled to a boss stern that is a stern of a ship and generating propulsion force;
A center pin disposed upright at the center of the pair of first and second side pins; And
A duct connecting the first and second side pins and an upper end of the center pin;
The propulsion improvement device for a ship comprising:
Wherein the pair of first and second side pins, the center pin and the duct are eccentrically biased toward the upward direction of the port of the ship,
The first side fin extending to the port side of the ship has an inclined structure inclined upward by a certain angle with respect to the port direction horizontal line to reduce the load applied to the duct by the upward flow rising from the port,
Wherein the duct portion connected to the end of the first side fin is provided with an upright portion having an upright structure for preventing an upward flow of fluid rising from the port. delete delete The method according to claim 1,
Wherein the second side fin is inclined upward to be positioned lower than an upper end height of the upright portion,
Wherein the duct has a round portion connected in a curved shape from an upper end of the upright portion to an upper end of the second side pin. 5. The method of claim 4,
Wherein a round portion of the duct is formed to have different sizes of cords. 6. The method of claim 5,
Wherein a round portion of the duct is formed with a small cord at a central portion thereof and has a plane arc structure in which cords at both ends are largely formed. The method according to claim 6,
Wherein the arch structure of the round portion has a curvature such that both ends thereof are symmetrical with respect to a center portion thereof.
KR1020120143459A 2012-12-11 2012-12-11 Apparatus for improving of propulsion for ship KR101779217B1 (en)

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KR101779217B1 true KR101779217B1 (en) 2017-09-27

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KR102211149B1 (en) * 2015-06-19 2021-02-01 한국조선해양 주식회사 A propulsion apparatus for ship

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