KR101531408B1 - Rotatable Air Injection Apparatus for Test of Ship - Google Patents

Abstract

The present invention relates to a rotatable testing apparatus for air injection of a ship. The present invention comprises: an air injection passage where an air supplied from an air supplying unit flows; a receiving chamber having a receiving space therein and having a coupling unit communicated with the outside of a ship body; and an air injection unit coupled on the coupling unit and having an injection hole injecting the air supplied by communicating with the air injection passage to the outside of the ship and configured of one or more units to enable a rotation state to selectively be controlled and to be coupled with the ship body.

Description

 Technical Field [0001] The present invention relates to a rotary air injection apparatus,

[0001] The present invention relates to a rotary type air injection test apparatus and a ship having the same, and more particularly, to a rotary type air injection test apparatus for testing a rotary type air injection test apparatus which can test a change in the injection amount, To an air injection test apparatus apparatus.

Recently, much research has been done on how to reduce friction between hull and seawater in order to increase propulsion efficiency of ship. Accordingly, a method of increasing the propulsion efficiency by reducing the friction by reducing the contact area by separately spraying air on the contact surface between the hull and the sea water has been developed.

When air is jetted to the outside of the hull, an additional jet port is provided on the surface of the hull and an air jet flow path for supplying air to the jet port is provided. The air moving along the air injection path is sprayed onto the surface of the hull, thereby reducing the friction between the hull and the sea water.

At this time, depending on the speed of the ship and the operating area, it is desirable to control the injection quantity and the spray shape of the air to the surface of the hull.

However, in the structure in which air is sprayed through the injection port formed on the surface of the ship, selectively opening and closing each of the plurality of injection ports, or adjusting the shape of the air injection direction and the spray surface is complicated in structure and high in risk of breakage.

Accordingly, it is necessary to develop an apparatus for measuring the amount of air injection, the direction of spraying, and the shape of the spraying surface in accordance with the use and shape of the ship, measuring the optimum application form, and applying it to the ship.

Korean Patent Publication No. 10-2011-0110707

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems and it is an object of the present invention to provide an air conditioner capable of changing the injection amount, the spraying surface and the spraying direction for spraying air onto the outer wall of the ship depending on the shape and use of the ship, The present invention relates to a rotary type air injection test apparatus for a ship.

According to one aspect of the present invention, there is provided a rotary type air injection test apparatus comprising: an air injection passage through which air supplied from an air supply unit flows; a housing space formed in the interior of the air injection passage; The hull has an accommodating chamber and an injection port which is connected to the coupling part and communicates with the air injection path and injects air supplied to the outside of the hull, And an air injection unit.

The air injection unit may have a cylindrical shape corresponding to the size of the coupling portion. The air injection unit may be formed in a long shape, And a second jetting portion having a cylindrical shape and having a circumference corresponding to the circumference of the engaging means and protruding along the longitudinal direction of the first jetting portion, the second jetting portion including the jetting port can do.

Here, the engaging means may include a plurality of recessed recesses that are spaced apart from each other along the circumference, and the second ejection unit may have protrusion members formed on a circumferential portion thereof to be coupled to the recessed recesses.

The depression grooves have a relatively larger number than the protruding members and may be configured to change positions where the protruding members are coupled to the air ejection unit according to the rotation state of the air ejection unit.

In addition, the air injection unit is composed of a plurality of air injection units, and each of the air injection units can be independently rotated.

The plurality of air injection units may have the same injection port.

The plurality of air injection paths may be spaced apart from the accommodating chambers.

In addition, a plurality of the air injection paths can be independently opened and closed to inject air.

The present invention has the following effects.

First, by measuring the degree of reduction of frictional force between the hull surface and seawater by changing the air injection direction and the shape of the jet surface of the jet port at which the air is injected to the surface of the model ship, the optimal jet port arrangement form corresponding to the shape and use of the hull There is an advantage that it can be derived.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a configuration of a model ship equipped with a rotary type air injection test apparatus according to an embodiment of the present invention; FIG.
FIG. 2 is a schematic view showing a configuration of a rotary type air injection test apparatus of FIG. 1; FIG.
3 is a bottom perspective view showing a configuration of the air injection test apparatus of FIG. 2;
FIG. 4 is a view showing a state where an air injection unit is coupled to a coupling portion in the air injection test apparatus of FIG. 2; FIG.
FIG. 5 is a bottom view of the coupling unit and the air injection unit in the air injection test apparatus of FIG. 2; FIG.
Figure 6 shows the air injection unit of Figure 2 being regulated and engaged in rotation on the coupling portion;
FIG. 7 is a bottom view of the air injection test apparatus of FIG. 2 mounted on a model ship; And
Fig. 8 is a view showing a state in which air is sprayed in a state in which the air injection unit is rotated in the model vessel of Fig. 7; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

First, a configuration of a rotary type air injection test apparatus according to an embodiment of the present invention will be schematically described with reference to FIGS. 1 to 4. FIG.

FIG. 1 is a schematic view showing the configuration of a model ship equipped with a rotary type air injection test apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view showing the configuration of the rotary type air injection test apparatus of FIG. FIG.

FIG. 3 is a bottom perspective view showing the configuration of the air injection test apparatus of FIG. 2, and FIG. 4 is a view illustrating a state where an air injection unit is coupled to a coupling portion in the air injection test apparatus of FIG.

First, a description will be given of the present embodiment with reference to a model ship equipped with a rotary type air injection test apparatus.

1, a model vessel equipped with an air injection test apparatus according to the present invention is shown on a water surface, and a plurality of jet ports are provided on the bottom or side of a model ship to jet air out of the hull (S) do.

In this case, when air is blown to the outside of the hull (S), the frictional force is reduced due to the reduction of the contact area between the ship and the sea water, and accordingly, the traveling speed is increased to increase the energy.

In general, the ship is operated at various speeds according to the shape and the purpose of the ship, and thus the friction generated between the seawater and the ship can be minimized by injecting air outside the ship S in an optimal form.

However, since the shape and operating speed of each ship varies, a model ship equipped with a rotary type air injection test apparatus according to the present invention can be used to simulate the optimum air injection quantity, The air injection direction can be derived.

By applying the shape of the injection surface and the air injection direction derived from the test using the model ship to the actual ship, it is possible to stably obtain the optimum efficiency without additionally adjusting the shape of the injection port or the injection direction for air injection .

Referring to FIG. 1, a rotary type air injection test apparatus according to the present invention and a configuration of a model ship having the rotary type air injection test apparatus according to the present invention will be schematically described. An air injection unit 300 and an air injection unit 300 which have a flow path 100 and an accommodating chamber 200 having an engaging part 210 and an injection port 330 and are connected to the coupling part 210, (Not shown) for measuring the degree of reduction of the frictional force between the hull (S) and the seawater by injecting air by the hull (S).

The air injection path 100 according to the present invention is constituted by a flow path through which air supplied from a separate air supply unit 10 provided in the hull S flows. At this time, the hull (S) means the hull (S) of the model ship. However, although the present invention is applied to a model ship, it may be applied to a real ship.

 The air supply unit 10 may be a general pump or may be configured in any form as long as it is configured to supply air to the air injection path 100. [

The air injection passage 100 is formed to be long and connected to an accommodation chamber 200 or an air injection unit 300 to be described later to transfer air.

Meanwhile, the air injection path 100 according to the present invention may include a plurality of air injection paths 100 and may be connected to at least one of the accommodating chambers 200.

More specifically, one air injection path 100 may be connected to one accommodating chamber 200, or alternatively, a plurality of air injection paths 100 may be spaced apart from one accommodating chamber 200.

In this embodiment, as shown in the figure, a plurality of air injection passages 100 are arranged to be spaced apart from each other in one accommodating chamber 200.

Each of the air injection passages 100 is connected to the accommodating chamber 200 and the other side is connected to the air supply unit 10 to transfer the supplied air into the accommodating chamber 200. At this time, the air supply unit 10 may be a single unit and may be connected to a plurality of air injection paths 100. Alternatively, a plurality of air supply units 10 may be respectively connected to a plurality of air injection paths 100 It is possible.

The air injection passage 100 may further include a separate opening and closing control unit 120. The opening and closing control unit 120 may selectively open and close the air injection passage 100. [

The air injection path 100 is selectively opened and closed so that the amount of air supplied to the accommodation chamber 200 or the air injection unit 300 can be selectively controlled.

Meanwhile, the accommodating chamber 200 according to the present invention has a receiving space formed therein, and has a coupling portion 210 communicating with the outside of the hull (S).

Specifically, in the accommodating chamber 200, a plurality of engaging portions 210 are formed to communicate with the outside of the hull S, and the air injecting unit 300, which will be described later, is disposed in the accommodating space formed therein, Lt; / RTI >

On the other hand, the accommodating chamber 200 may be constituted by a plurality of units in the hull (S).

In this embodiment, the accommodating chamber 200 is elongated, and a plurality of engaging portions 210 are formed along the longitudinal direction toward the surface of the hull S, and the air injecting unit 300, which will be described later, As shown in Fig.

Here, the coupling portion 210 has a circular shape as shown in the drawing, and is formed in a shape that communicates with the inside and the outside of the hull (S). The engaging portion 210 is formed with a relatively small circumference at a portion corresponding to the length of the communicating direction.

4, the engaging portion 210 has a uniform circumference and is formed long in the vertical direction, but the engaging means 212 having a relatively small circumference is formed on one side along the longitudinal direction.

The engaging means 212 formed as described above supports the air injection unit 300 so that the air injection unit 300 can be stably engaged without being released to the outside of the hull S even if the air injection unit 300 is coupled to the coupling portion 210.

At this time, the engaging means 212 may be located at a part along the upper and lower sides in the longitudinal direction of the engaging portion 210, and as shown in the present embodiment, the engaging means 212 may be formed at the lower end .

The specific shape of the engaging means 212 will be described later.

The air injection unit 300 according to the present invention is coupled to the coupling part 210 inside the accommodation space formed in the accommodation chamber 200 and communicates with the air injection path 100, (S).

And at least one or more of the hulls S are selectively coupled to the hull S so as to be rotated.

The air injection unit 300 includes a plurality of air injection units 300 and is coupled to the coupling unit 210 to inject air supplied from the air injection path 100 to the outside of the ship S through the injection port 330 . Here, the air injection unit 300 is selectively rotated and is coupled to the coupling part 210.

In this embodiment, the air injection unit 300 is formed in a cylindrical shape corresponding to the shape of the coupling part 210, and has an injection hole 330 formed at one side along the longitudinal direction, and is provided at the other side from the air injection path 100 Is supplied.

More specifically, the air injection unit 300 may include a first injection part 310 and a second injection part 320 as shown in FIG.

The first injection part 310 is formed to have a cylindrical shape corresponding to the size of the coupling part 210 and is formed so as to have a larger circumference than the engagement part 212 at the same time. Accordingly, at least a part of the first splitter 310 is inserted into the coupling part 210, and the first splitter 310 is disposed so as not to be separated from the outer surface of the hull S by the engagement means 212.

The second injection part 320 has a cylindrical shape protruding along the longitudinal direction of the cylindrical first injection part 310 and has a circumference corresponding to the circumference of the engagement part 212, And a jetting port 330 is formed in a direction opposite to the yarn 310.

That is, the second jetting port 330 passes through the engaging means 212 formed on the coupling portion 210 and is disposed outside the hull S.

The air injecting unit 300 is coupled to the coupling part 210 and is engaged with the outer side of the hull S by the engaging means 212. In this way, And can be stably positioned in the engaging portion 210.

At this time, the first and second jetting portions 310 and 320 are communicated with each other so that air supplied from the air jetting passage 100 can be jetted through the jetting port 330.

In the meantime, the jetting port 330 according to the present invention is formed in the air jetting unit 300 in the outer direction of the hull S to jet air to the outside of the hull S, and in this embodiment, the second jetting unit 320 .

In this embodiment, a plurality of jetting ports 330 may be formed in parallel on the lower surface of the second jetting unit 320 in a slit shape as shown in FIG. 3. Alternatively, the jetting ports 330 may be formed in various shapes.

As the air injection unit 300 is constructed as described above, the air injection unit 300 is selectively rotated on the coupling part 210, and thus the air injection direction in which air is injected through the injection port 330 and the shape of the injection surface .

Here, the jetting surface means a surface formed by the arrangement of the jetting ports 330, and the shape of the jetting of air onto the surface of the hull S varies according to the shape of the jetting surface.

In the present embodiment, the other end of the air injection unit 300 is not directly connected to the air injection path 100, and the air supplied through the air injection path 100 is supplied to the inside of the accommodation chamber 200 So that air is supplied from the accommodation chamber 200 after passing through the accommodation space.

Alternatively, the air injection path 100 may be directly connected to the other side of the air injection unit 300 so that the supplied air is directly injected to the outside of the hull S without going through the accommodation space inside the accommodation chamber 200 .

Meanwhile, although not shown in the drawing, the measuring means according to the present invention measures the degree of reduction of the frictional force between the hull (S) and sea water by injecting air by the air injection unit (300).

At this time, the measurement means adjusts the rotation state of the air injection unit 300, repeatedly performs the test, and compares the measured information with each other, and thereby, the air injection unit 300 having the best frictional reduction efficiency of the hull (S) As shown in FIG.

Accordingly, the rotating type air injection test apparatus according to the present invention adjusts the shape of the injection port 330 or the direction of air injection in various ways corresponding to the shape of the ship S, The direction of air injection can be detected.

5 and 6, the structure of the air injection unit 300 and the coupling unit 210 according to the embodiment of the present invention will be described in detail.

FIG. 5 is a bottom view of the coupling unit 210 and the air injection unit 300 in the air injection test apparatus of FIG. 2. FIG. 6 is a cross-sectional view of the air injection unit 300 of FIG. Lt; RTI ID = 0.0 > and / or < / RTI >

First, as shown in FIG. 5 (a), the engaging means 212 formed on the engaging portion 210 is formed with a plurality of depressed grooves 212a spaced apart along the perimeter. Here, a plurality of depressed grooves 212a may be formed along the circumference with a uniform gap.

5 (b), the protrusion member 322 is formed at a portion along the circumference to be engaged with the recessed groove 212a, and the protrusion member 322 And is inserted into the recessed groove 212a.

That is, the second jetting section 320 and the engaging means 212 are formed so as to have the same circumference, and the projecting member 322 and the recessed groove 212a formed in the second jetting section 320 and the engaging means 212 are coupled to each other.

Accordingly, the air injection unit 300 can be stably coupled to the coupling portion 210, and the air injection direction of the injection port 330 can be adjusted by selectively controlling the rotation state of the air injection unit 300.

In addition, it is possible to prevent the air injection unit 300 from rotating freely unlike the user's intention by the recessed groove 212a and the projecting member 322. [

As shown in the drawing, the depression grooves 212a are formed to have a relatively larger number than the projecting members 322, so that the positions of the depression members 322 are changed depending on the rotation state of the air injection unit 300 Lt; / RTI >

Of course, the number of the depressed grooves 212a and the number of the projecting members 322 may be the same.

However, since the rotation angle of the air injection unit 300 can be adjusted more precisely when the number of the recessed grooves 212a is larger than the number of the projecting members 322, the rotational type air injection test More precise test results can be obtained when testing a model ship using a device.

6A shows a bottom surface of the coupling unit 210 in a state where the air injection unit 300 is coupled with a part of the protrusion member 322 inserted into the depression groove 212a Coupled state.

Here, the ejection openings 330 are formed in a slit shape and are long in the left and right direction.

When air is injected outside the hull (S) in a state where the air injection unit (300) is disposed as described above, the injected air is injected to the upper portion or the lower portion of the slit.

6 (b), the air injection unit 300 is rotated in the counterclockwise direction by a predetermined angle so that the protruding member 322 does not protrude from the recesses 212a other than the depression grooves 212a combined in FIG. 6 (a) And is coupled to the groove 212a.

In this case, the air injected outside the hull S is injected in a direction rotated by a predetermined angle from that in the state of FIG. 6 (a).

That is, the angle of rotation of the air injection unit 300 is adjusted according to the position where the air injection unit 300 is coupled to the recessed groove 212a to which the projection member 322 is coupled, The direction of air injection is changed.

Here, the plurality of air injection units 300 may be configured such that the rotation states of the plurality of air injection units 300 are independently controlled, and injection ports 330 having the same shape are formed. Of course, the plurality of air injection units 300 may be configured to have the injection holes 330 having different shapes.

As the coupling unit 210 and the air injection unit 300 according to the present invention are formed, the rotation state of the air injection unit 300 is selectively changed and coupled with the coupling unit 210, The shape and the spraying direction of the jetting surface on which air is jetted to the outside of the hull S can be adjusted by jetting the jetted air outside the hull S. [

7 and 8, the shape of the jetting surface and the direction of jetting in which air is jetted to the outside of the hull S according to the rotation state of the air jetting unit 300 will be described below.

FIG. 7 is a bottom view of the air injection test apparatus of FIG. 2 mounted on a model ship, FIG. 8 is a view showing a state in which air is injected in a state in which the air injection unit 300 is rotated in the model ship of FIG. to be.

Referring to FIG. 7, the air injection unit 300 is coupled with a plurality of injection openings 330 on the surface of a model ship to inject air outside the ship.

Here, the jetting ports 330 formed in each of the plurality of air ejecting units 300 have three slits and are formed in parallel. The plurality of air injection units 300 are coupled to the coupling unit 210 so as to have the same rotation state.

When the air is injected through the injection port 330 in a state where the plurality of air injection units 300 are arranged, air is injected in a direction opposite to the traveling direction of the hull S in the form of the air to be injected.

At this time, since the plurality of air injection units 300 are arranged so as to have the same rotation state, each of the ejection openings 330 ejects air in the same direction.

Accordingly, the shape of the jetting surface on which the air is jetted by the plurality of air jet units 300 is formed to be long in the vertical direction.

8, the air injection unit 300 positioned on the right side of the hull S of the plurality of air injection units 300 is arranged to rotate clockwise at a predetermined angle, The air injection unit 300 is disposed in a state of rotating at a predetermined angle in a counterclockwise direction.

When the air is injected through the injection port 330 in a state where the plurality of air injection units 300 are arranged, the injection ports 330 are arranged in a curved shape rather than a straight line, .

Accordingly, by adjusting the rotation state of the air injection unit 300, the arrangement of the jetting ports 330 changes, and the jet direction and the jetting surface shape in which air is jetted to the outside of the ship S are changed.

As described above, the rotary type air injection test apparatus of the present invention and the model ship having the rotary type ship air injection test apparatus according to the present invention adjust the shape of the injection port 330 and the direction of air injection so that the frictional force of the surface of the hull (S) It is possible to derive the best effect.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: air jet passage 200: accommodating chamber
210: coupling portion 300: air injection unit
310: first jetting part 320: second jetting part
330: nozzle S: hull

Claims (8)

An air injection flow path through which the air supplied from the air supply unit flows;
An accommodating chamber having an accommodating space formed therein and having an engaging portion communicating with the outside of the hull; And
And an air ejection unit having at least one or more ejection orifices for ejecting air to the outside of the hull and selectively controlling the rotation of the coupling unit. The method according to claim 1,
Wherein the engaging portion has a circular shape and is formed with an engaging means having a relatively small circumference,
Wherein the air ejecting unit has a cylindrical shape and has a first ejecting portion and a cylindrical shape having a larger circumference than the engaging means and protruding along the longitudinal direction in the first ejecting portion to have a circumference corresponding to the circumference of the engaging means, And a second jetting section in which the jetting port is formed. 3. The method of claim 2,
Wherein the engaging means is formed with a plurality of depressed recesses spaced along the perimeter,
Wherein the second jetting portion is formed with a protruding member at a portion along the circumference so as to be coupled to the recessed groove. The method of claim 3,
The depressed-
Wherein the air injection unit has a relatively larger number than the projecting member and is configured to change a position where the air injection unit is engaged with the projecting member according to a rotation state of the air injection unit. The method according to claim 1,
The air injection unit includes:
Wherein the plurality of units are independently controlled in rotation. The method according to claim 1,
The air injection unit includes:
And the jetting ports having the same shape are formed on each of the plurality of jetting ports. The method according to claim 1,
The air-
And a plurality of the plurality of air blowing test apparatuses are connected to the accommodating chambers. 8. The method of claim 7,
The air-
A plurality of air spraying apparatuses are independently controlled to be opened and closed to inject air.

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