KR102138459B1 - Steering apparatus and ship having the same - Google Patents

Abstract

Steering apparatus according to an embodiment of the present invention, the rudder provided adjacent to the propeller; A bulb provided on the rudder; And it extends in the vertical direction in the bulb, respectively, it is coupled to the portion protruding from the leading edge of the rudder in the bulb, it characterized in that it comprises a guide portion for guiding the flow of the fluid.

Description

STEERING APPARATUS AND SHIP HAVING THE SAME

The present invention relates to a steering device and a ship having the same.

In general, in the case of a large ship, a method of advancing using a flow of fluid generated when the propeller attached to the rear of the hull rotates is used. At this time, a rudder is attached to the rear of the propeller, and as the rudder rotates left and right, the direction of flow of the fluid is adjusted to change the sailing direction.

In order to achieve a constant speed through the rotation of the propeller, an engine such as diesel must be used to drive the engine. In this case, as a large amount of oil is consumed and greenhouse gas is discharged, problems such as environmental destruction are caused. .

Therefore, in recent years, various efforts have been made to reduce fuel consumption by reducing energy consumed during propulsion of a ship. In particular, IMO discussed ways to reduce GHG emissions when operating ships in 2010, and is in the process of establishing standards and directions for fuel economy regulations.

As shipping companies also joined in this movement, shipping companies began to take an interest in fuel-saving ships that could reduce the burden on oil costs. Due to the needs of shipping companies, shipbuilders have been continuously researching and developing fuel-saving technologies that can reduce fuel consumption and reduce greenhouse gas emissions.

As an example of fuel-saving technology, the energy saving device (ESD), which improves the propulsion efficiency by improving the shape of a ship's tail, propeller, rudder, etc. or attaches a separate accessory, while saving fuel, is large. It is receiving attention, and these energy-saving additional devices have already been applied to many ships.

However, the conventionally used bulb has limitations in improving steering performance or increasing propulsion efficiency because it can cause an increase in resistance, and thus improvement is required.

[Prior Art Document] Published Patent Publication No. 10-2016-0035670 (2016.04.01., published)

The present invention was created to solve the problems of the prior art as described above, and the object of the present invention is to provide a steering wheel and a steering device capable of securing a reduction effect of a hub vortex while reducing resistance. It is to provide a ship to do.

Steering apparatus according to an embodiment of the present invention, the rudder provided adjacent to the propeller; A bulb provided on the rudder; And it extends in the vertical direction in the bulb, respectively, it is coupled to the portion protruding from the leading edge of the rudder in the bulb, it characterized in that it comprises a guide portion for guiding the flow of the fluid.

A ship according to another embodiment of the present invention is characterized by including the steering device.

Specifically, the guide portion, a first extending member extending in the upper direction; And a second extension member extending in a lower direction.

Specifically, at least one surface of the first extension member and the second extension member may be vertical.

Specifically, at least one surface of the first extension member and the second extension member may have a slope.

Specifically, the cross-sectional area of the first extension member and the second extension member may be reduced from the bulb to the end.

Specifically, the first extension member and the second extension member may be formed in left and right asymmetry.

Specifically, the rudder, the leading edge may be made vertically parallel to the left and right direction with the axis of the propeller.

The steering device according to the present invention and the ship having the same, can improve the straightness of the rudder inflow through the reduction of the rotational energy of the hub vortex, and the addition of fluid force acting on the rudder through the guide portion, which is a relatively simple form, is added. It can be improved, and it is possible to improve propulsion efficiency and structural stability by reducing rudder resistance.

1 is a view showing a steering device according to a first embodiment of the present invention.
2 is a view showing a steering device according to a second embodiment of the present invention.
3 is a view showing a steering device according to a third embodiment of the present invention.
4 is a view showing a steering device according to a fourth embodiment of the present invention.
5 is a view showing a steering device according to a fifth embodiment of the present invention.
6A is a view showing the front of the steering device according to the sixth embodiment of the present invention.
6B is a view showing in detail one side of the steering device according to the sixth embodiment of the present invention.
6C is a view showing in detail the other side of the steering device according to the sixth embodiment of the present invention.
6D is a view showing a side surface of a steering apparatus according to a sixth embodiment of the present invention.
7 is a view showing a comparison of a part of port port of a ship provided with a steering device according to a sixth embodiment of the present invention and the prior art.
8 is a view showing a comparison of a part of a starboard of a ship provided with a steering device according to a sixth embodiment of the present invention and the prior art.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments, which are associated with the accompanying drawings. In addition, it should be noted that, in addition to reference numerals to the components of each drawing in the present specification, the same components have the same numbers as possible, even if they are displayed on different drawings. In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a steering device according to a first embodiment of the present invention, Figure 2 is a view showing a steering device according to a second embodiment of the present invention, Figure 3 is a third embodiment of the present invention A diagram showing a steering device according to the present invention, Figure 4 is a view showing a steering device according to a fourth embodiment of the present invention, Figure 5 is a view showing a steering device according to a fifth embodiment of the present invention, 6 is a view showing a steering device according to a sixth embodiment of the present invention.

And Figures 7 and 8 is a view showing a comparison between the prior art and the ship provided with a steering device according to a sixth embodiment of the present invention.

1 to 8, the ship 10 according to an embodiment of the present invention may include an engine system (not shown), a steering device 100, and the like.

In addition, the steering device 100 may include a rudder 110, a bulb 120, and a guide unit 130, and for the convenience of explanation and understanding, directions may be expressed in left and right directions based on the drawings. It may be, but is not limited to mention.

In addition, as described below, the first to sixth embodiments may have various modifications as the same technology may be applied or different technologies may be applied or combined according to embodiments, and thus have the same name. It should be noted that the configuration is not limited to a specific embodiment even if the same code is used.

The rudder 110 may be provided adjacent to a propeller (not shown), may be connected to the horn or skeg of the hull, and a rudder shaft (not shown) may be inserted. In this case, the rudder shaft may be formed in the vertical direction, the leading edge 101 may be formed at the front end of the rudder 110, and the trailing edge 102 may be formed at the rear end.

Unlike the twisted rudder of the rudder 110 of this embodiment, the leading edge 101 and the trailing edge 102 may be continuously provided. For example, in the rudder 110, the leading edge 101 may be formed vertically, parallel to the axis of the propeller in the left and right directions.

However, the leading edge 101 is made vertically in the vertical direction, but may have an inclination from the top to the bottom in the front-rear direction, and may be inclined backward from the top to the bottom.

In addition, the trailing edge 102 may be a line formed vertically in the vertical direction and perpendicular to the water plane. Of course, this embodiment does not limit the leading edge 101 and trailing edge 102 as described above, and on the contrary, the leading edge 101 may be perpendicular to the water plane and the trailing edge 102 may be inclined. .

In addition, the cross-section of the rudder 110 may have a leading edge 101, which is a curved surface, and a trailing edge 102, which is a rear end, may have a pointed shape, specifically, an airfoil shape. In addition, the cross section of the rudder 110 may be in a form in which the area decreases from the top to the bottom. At this time, the rate at which the cross-section decreases may be constant, and the width of the left and right and the front and rear widths may be reduced based on the trailing edge 102 toward the bottom.

The bulb 120 may be provided on the rudder 110 and protrudes from the front end of the rudder 110, for example. The bulb 120 may protrude a predetermined length forward with respect to the leading edge 101 of the rudder 110, and may also have a shape protruding from side to side of the rudder 110 from the rear of the leading edge 101. have.

The guide portion 130 extends from the bulb 120 in the vertical direction, respectively, and is coupled to a portion protruding from the leading edge 101 of the rudder 110 in the bulb 120 to guide the flow of the fluid. .

Here, the guide unit 130 may include a first extension member 131 and a second extension member 132.

The first extension member 131 may extend in the upper direction, and the second extension member 132 may extend in the lower direction.

For example, as shown in FIGS. 1, 3, and 5, at least one surface of the first extension member 131 and the second extension member 132 may be vertically formed.

Here, as shown in FIGS. 1 and 3, each of the first extension member 131 and the second extension member 132 may have parallel left and right sides (based on the drawing), and may be provided in the form of a plate. , As shown in FIG. 1, may have a shape extending vertically from the center of the bulb 120 toward the top or toward the bottom. Alternatively, as shown in FIG. 3, the bulb 120 may have a shape extending vertically from the left side (based on the drawing) or the right side (based on the drawing) in the upper direction or the lower direction.

In addition, as shown in FIG. 5, each of the first extension member 131 and the second extension member 132 may have a three-dimensional structure in which a hollow is formed inside, and the left or right sides are vertically formed and opposed to each other. The right side or the left side may have a slope.

5, the left side of the first extension member 131 may extend vertically from the upper center of the bulb 120 and the right side of the first extension member 131 may have a slope, so that the bulb 120 As it is provided in a form extending from the right end of the first extension member 131 to the left end, the cross-sectional area of the first extension member 131 may gradually decrease from the bulb 120 toward the top. At this time, the right side of the second extension member 132 extends vertically from the lower center of the bulb 120 and the left side of the second extension member 132 is the right side of the second extension member 132 from the left end of the bulb 120. It may be provided in a form extending to the end.

Also, as shown in FIGS. 2, 4, and 6, the entire first extension member 131 and the second extension member 132 may have an inclined shape.

2 and 6, the first extension member 131 is inclined in the right direction based on the drawing from the center of the bulb 120, and the second extension member 132 is left based on the drawing. While being inclined in the direction, it may be formed by having a plate structure as shown in FIG. 2 or having a three-dimensional structure as shown in FIG. 6. Moreover, as shown in FIG. 6, each of the first extension member 131 and the second extension member 132 may have a three-dimensional structure in which the cross-sectional area decreases as it goes to the end similarly/similarly to the fifth embodiment. However, in the embodiment of FIG. 6A, the ends of each of the first extension member 131 and the second extension member 132 are shown to be provided to be spaced inward from the left and right sides of the rudder 110, but preferably the rudder ( 110) The right side of the first extension member 131 is provided along the right line, and the left side of the second extension member 132 is provided along the left line of the rudder 110 to guide the flow of seawater more easily.

In addition, the first extension member 131 and the second extension member 132 of the present embodiment may be formed in asymmetry, such as the second embodiment of FIG. 2 and the like.

As described above, in the first to sixth embodiments, overlapping technologies are applied according to embodiments (both inclined structures in both the second and fourth embodiments), or at least some of the different technologies (first embodiments are It is vertical and the second embodiment may be inclined, different inclination directions of the second and fourth embodiments may be applied, etc., each of which has various structures in consideration of the flow of the propeller wake, such as the structure and operation of the propeller. It is to consider an embodiment that can be optimally made for each of the propellers (for example, the hub vortex due to propeller rotation, in the case of a right-turn propeller, the upper portion of the propeller shaft reference flows from the port side to the starboard side).

And the sixth embodiment of the above embodiment, it can be seen through the experimental data that there is a difference from the prior art, as shown in Figures 7 and 8 and Table 1 below.

Referring to FIGS. 7 and 8, unlike the prior arts of FIGS. 7A and 8B of FIGS. 7A and 8B, the guide unit 130 is provided, and FIGS. 7 and 8 As it refers to the width of the circle and the arrow of, it can be seen that the area of the hub vortex is reduced to improve the straightness.

In addition, referring to Table 1, in contrast to the conventional (existing) in which only the bulb 120 is provided without the guide 130, the resistance (R) when the guide 130 is added as in this embodiment (new) , It can be seen that the improvement effect is secured in thrust (T), torque (Q), etc., and finally, the transmission horsepower required to operate the ship is improved compared to the prior art (Self-Propulsion, demonstrated based on contract speed) ).

Here, it is noted that the numerical values in the table indicate the present embodiment as a ratio with 100% of the prior art for comparison.

[Table 1]

As described above, this embodiment can improve the straightness of the rudder inflow through reducing the rotational energy of the hub vortex, and add a fluid force acting on the rudder 110 through the guide portion 130, which is a relatively simple form of an additive. Can be improved, and the propulsion efficiency can be improved and the structural stability can be improved by reducing the resistance of the rudder 110. The vortex strength is primarily attenuated by the spherical bulb 120 installed on the rudder 110, and guided. Secondary attenuation by the unit 130 may be performed.

The present invention is not limited to the above-described embodiments, and it is needless to say that a combination of the above embodiments or a combination of at least one of the above embodiments and a known technology may be included as another embodiment.

Although the present invention has been described in detail through specific examples, the present invention is specifically for describing the present invention, and the present invention is not limited to this, and by those skilled in the art within the technical spirit of the present invention. It will be apparent that the modification and improvement are possible.

All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100: steering 110: rudder
101: leading edge 102: trailing edge
120: bulb 130: guide portion
131: first extension member 132: second extension member

Claims (8)

A rudder provided adjacent to the propeller;
A bulb provided on the rudder; And
Each extending in the vertical direction in the bulb, coupled to the portion protruding from the leading edge of the rudder in the bulb, including a guide portion for guiding the flow of the fluid,
The guide portion,
A first extension member extending in an upward direction; And
Steering device comprising a second extending member extending in the lower direction. delete The method of claim 1, wherein the first extension member and the second extension member,
Steering apparatus characterized in that at least one side is made of vertical. The method of claim 1, wherein the first extension member and the second extension member,
Steering apparatus characterized in that at least one side has a slope. The method of claim 1, wherein the first extension member and the second extension member,
Steering device, characterized in that the cross-sectional area is reduced from the bulb to the end. The method of claim 1, wherein the first extension member and the second extension member,
Steering device characterized by consisting of left and right asymmetry. According to claim 1, The rudder,
Steering device, characterized in that the leading edge is made of a vertical side-by-side parallel to the axis of the propeller. A ship including the steering device of any one of claims 1 and 3 to 7.

Images