WO2013051915A1 - 기진력 저감형 선박 - Google Patents
기진력 저감형 선박 Download PDFInfo
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- WO2013051915A1 WO2013051915A1 PCT/KR2012/008136 KR2012008136W WO2013051915A1 WO 2013051915 A1 WO2013051915 A1 WO 2013051915A1 KR 2012008136 W KR2012008136 W KR 2012008136W WO 2013051915 A1 WO2013051915 A1 WO 2013051915A1
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- WIPO (PCT)
- Prior art keywords
- compressed air
- vibration reduction
- hull
- module
- line
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/15—Propellers having vibration damping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Definitions
- the present invention relates to a vibration reduction vessel, and more particularly, to an vibration reduction vessel having an improved structure for vibration reduction.
- the propeller wing itself is designed differently in shape or size, the shape of the ship's rear end is improved, or a separate reinforcement is added to block the noise and vibration,
- We have tried to apply or apply various methods such as attaching a guide device to guide the flow of water from the water, reducing the size of the propeller, etc., but it is effective to reduce the vibration force. It is difficult.
- vibration problems including noise transmitted to the hull due to increased vibration force due to the fluctuation pressure caused by the propeller, are urgent in the case of ships intended to be cruised like cruise ships or ships requiring quiet operation such as warships. As it is a matter to be solved, it is urgent to research and develop it.
- the technical problem to be achieved by the present invention is to provide an anti-vibration type vessel that can prevent the vibration is generated in the hull due to the increased vibration force due to the fluctuation pressure generated during the propeller operation.
- the vibration force due to the fluctuation pressure generated during the propeller operation, the vibration force can be prevented from occurring by increasing the vibration force.
- FIG. 1 is a structural diagram of a propeller region of a vibration reduction type ship according to a first embodiment of the present invention.
- FIG. 2 is a schematic rear structure diagram of FIG. 1.
- FIG. 5 is an enlarged structural diagram of region A of FIG. 1.
- FIG. 6 is an exploded view of FIG. 5.
- FIG. 7 is a perspective view of FIG. 6.
- FIG. 8 is a rear perspective view of the vibration reduction module.
- FIG. 9 is a control block diagram of a vibration reduction type ship according to a first embodiment of the present invention.
- Figure 10 (a) is a schematic rear structure diagram of a vibration reduction vessel according to a second embodiment of the present invention, (b) is a modification.
- FIG. 11 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the third embodiment of the present invention.
- FIG. 12 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the fourth embodiment of the present invention.
- FIG. 13 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the fifth embodiment of the present invention.
- FIG 14 and 15 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the sixth embodiment of the present invention, respectively.
- 16 and 17 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the seventh embodiment of the present invention, respectively.
- FIG 18 and 19 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the eighth embodiment of the present invention.
- the hull is provided with a propeller in the rear; And a vibration reduction module that forms an air layer on the surface of the hull adjacent to the propeller to generate a reflected wave during operation of the propeller, thereby reducing vibration force toward the hull.
- the module may be provided with an anti-vibration type ship is disposed biased to one side with respect to the center line passing through the axis of rotation of the propeller in the vertical direction of the hull.
- the air layer formed by the vibration reduction module may be locally formed on a portion of the surface of the hull adjacent to the propeller.
- the vibration reduction module may be disposed to be biased toward the direction in which the propeller is rotated based on the center line.
- the vibration reduction module may inject air along the stern direction from the bow of the hull to form an air layer on the surface of the hull.
- the vibration reduction module has a protrusion coupled to the wall surface of the hull and protruding from the outer surface of the hull, and generates bubbles to the outer surface of the hull through bubble spray holes formed in the protrusion.
- An air layer can be formed on the surface.
- It may further include a porous cap coupled to the bubble injection hole region.
- a bottom plug coupled to the wall of the hull and to which the vibration reduction module is detachably coupled; And a compressed air supply unit for supplying compressed air to the vibration reduction module.
- the compressed air supply unit a compressor provided on one side of the hull; A compressed air supply line directly connecting the compressor with the vibration reduction module; And at least one valve provided in the compressed air supply line to regulate a flow of compressed air flowing along the compressed air supply line.
- the vibration reduction module may include: a module body having a compressed air flow line through which compressed air flows from the compressed air supply part, and coupled to be inserted into a through part of the bottom plug, wherein the protrusion is formed at one side thereof; And a body flange formed on the other side of the module body and disposed on the seat jaw of the bottom plug.
- the protruding portion, the inclined wall portion connected inclined at one side of the module body; And a vertical wall disposed vertically from the end of the inclined wall to the surface of the module body.
- the compressed air flow line the straight section extending in the longitudinal direction of the module body; And an intersecting section disposed inside the protruding portion and intersecting with the straight section and having the bubble injection hole formed at an end thereof.
- An arc guide portion for guiding the compressed air may be further formed between the straight section portion and the cross section portion.
- the plurality of straight sections and the cross sections may be independently provided.
- a fluctuation pressure sensing unit provided on the hull to sense a fluctuation pressure generated when the propeller operates; And a controller configured to control bubble generation through the vibration reduction module based on the information from the variable pressure sensing unit.
- the apparatus may further include a line opening / closing module provided in the compressed air flow line of the vibration reduction module to selectively open and close the opening of the compressed air flow line.
- the line opening / closing module is a non-powered line opening / closing module that opens the compressed air flow line when the compressed air is supplied through the compressed air flow line and shields the compressed air flow line when the supply of the compressed air is stopped. Can be.
- the non-powered line opening and closing module may include a ball member disposed in the compressed air flow line to open and close the compressed air flow line; And the ball member, which is compressed when the compressed air is supplied to open the compressed air flow line through the ball member and expands when the supply of the compressed air is stopped to cause the ball member to press the compressed air. It may include a first elastic body to shield the flow line.
- the non-powered line opening / closing module may include: a ball chamber provided on the compressed air flow line, the ball chamber being formed to be partially narrower in width than the region before the compressed air flows to form a place where the ball member is disposed; And an elastic support provided in the ball chamber to support the first elastic body.
- the non-powered line opening and closing module may include: a line opening and closing plate rotatably disposed in the compressed air flow line to selectively open and close the compressed air flow line; A second elastic body connected to the line opening and closing plate and elastically biased in a direction in which the line opening and closing plate is returned to its original position; And it may include a stopper provided on the wall of the compressed air flow line to limit the rotation of the line opening and closing plate.
- FIG. 1 is a structural diagram of a propeller region of a vibration reduction type ship according to a first embodiment of the present invention
- Figure 2 is a schematic rear structural diagram of FIG.
- the ship of the present embodiment is a vibration reduction type ship
- the hull 110 is provided with a propeller 120 at the rear
- An air layer (refer to FIGS. 1 and 5) for generating a reflected wave on the surface thereof may include an vibration suppression module 140 for reducing vibration force toward the hull 110.
- Ships of this embodiment may include floating offshore structures, including merchant ships, warships, fishing vessels, carriers, drillships, cruise ships and special work vessels.
- a rudder 130 for adjusting a traveling direction of the ship is provided around the propeller 120.
- the rudder 130 may be a general rudder or a bulb rudder.
- the vibration transmitted to the hull 110 may be a big problem in the case of a cruise ship or a ship to which a quiet operation such as a warship is supposed to be assumed, for example, a propeller.
- the vibration reduction module 140 is proposed in order to prevent vibration from occurring in the hull 110 due to the increase in vibration force caused by the fluctuation pressure generated in the water during operation of the 120.
- the vibration reduction module 140 is disposed at a position biased to one side based on the center line C / L passing through the rotation axis of the propeller 120 along the up and down direction of the hull 110. Can be.
- the vibration reduction module 140 may be disposed to be biased toward the direction in which the propeller 120 is rotated based on the center line C / L of the hull 110, and the hull ( An air layer (see FIGS. 1 and 5) generating a reflected wave on the surface of the hull 110 may be formed by spraying air along the stern direction from the bow of 110.
- the vibration reduction module 140 is biased toward the opposite side of the direction in which the propeller 120 is rotated based on the centerline C / L of the hull 110. It may be deployed.
- the air layer formed by the vibration reduction module 140 is sufficient if it is locally formed in a part of the surface of the hull 110 adjacent to the propeller 120. Do. In other words, the air layer by the vibration reduction module 140 may not be formed to cover the entire surface of the hull 110 adjacent to the propeller 120 but may be formed only in a partial region. The action may be more advantageous in reducing vibratory forces towards the hull 110.
- vibration suppression modules 140 are shown as an embodiment, but the number of vibration suppression modules 140 may be three or more, including one.
- the vibration reduction module 140 provided in the hull 110 forms an air layer (see FIGS. 1 and 5) having a predetermined width on the surface of the hull 110 in the stern direction, thereby providing a propeller 120. Due to the fluctuation pressure generated during operation, the vibration force may be prevented from occurring due to the increase in vibration force.
- Spherical pressure waves generated by cavitation during propeller 120 operation may be propagated in all directions.
- a part of the spherical pressure wave incident on the air layer It is reflected out of the air layer with a phase close to 180 degrees relative to the incident wave.
- the reflected reflection wave meets the incident wave, which is a spherical pressure wave incident toward the air layer, and cancels / reduces the incident wave.
- This action reduces the fluctuation pressure transmitted to the hull 110 from the outside of the air layer. do.
- the fluctuation pressure transmitted from the outside of the air layer to the hull 110 is reduced, since the vibration force is reduced, the noise or vibration generated from the hull 110 is naturally reduced.
- FIG. 3 is a test example of the vibration reduction module
- Figure 4 is a result graph according to the test example of FIG.
- the air is injected in the stern direction from the bow through the vibration reduction module 140 to form an air layer having a predetermined width on the surface of the hull 110, and the positions of P1 to P4
- the fluctuation pressure sensor (1-4) was arrange
- the fluctuation pressure is reduced by an average of 50% or more as shown in FIG. 4A, and the vibration level in the stern area is also reduced by more than 80% as in FIG. 4B. It can be seen that. In particular, it can be seen that the fluctuation pressure is reduced by an average of 50% or more at points P2, P3 and P4 that are outside the air layer.
- FIG. 5 is an enlarged structural view of region A of FIG. 1
- FIG. 6 is an exploded view of FIG. 5
- FIG. 7 is a perspective view of FIG. 6
- FIG. 8 is a rear perspective view of the vibration reduction module.
- the vibration reduction module 140 applied to the vibration reduction type ship of the present embodiment is coupled to the wall surface of the hull 110 adjacent to the propeller 120 from the outer surface of the hull 110 It has a protruding protrusion 141, and generates bubbles to the outer surface of the hull 110 through the bubble injection hole (141a) formed in the protrusion 141 to the surface of the hull 110 as shown in Figs. It serves to form a constant air layer.
- a bottom plug 160 is coupled to the wall surface of the hull 110.
- the vibration reduction module 140 receives compressed air by the compressed air supply unit 170 provided in the hull 110 and sprays compressed air in water to form an air layer formed by air bubbles on the surface of the hull 110. Be sure to
- the bottom plug 160 is a component that is mounted on the wall surface of the hull 110.
- the bottom plug 160 serves as a stopper for draining the water introduced into the hull 110. Since the bottom plug 160 opens only when necessary, the bottom plug 160 does not normally need to be separated from the hull 110.
- a plug coupling hole 111 for coupling the bottom plug 160 is formed in the hull 110.
- the first inclined surface 112 and the first horizontal surface 113 are formed on the outer wall of the plug coupling hole 111, and the second inclined surface 161 and the second horizontal surface 162 are also formed in the bottom plug 160. do.
- the bottom plug 160 may be coupled to the plug coupling hole 111.
- the bottom plug 160 may be advantageous in that it is easily assembled or screwed into the plug coupling hole 111 so that it is not easily separated.
- the compressed air supply unit 170 As shown in FIG. 1, a compressor 172 disposed in a steering gear room 171 provided on one side of the hull 110, and a compressor 172. ) And a compressed air supply line 173 for directly connecting the vibration reduction module 140.
- one vibration suppression module 140 is applied, it is sufficient if one compressed air supply line 173 is also provided. If the vibration suppression module 140 is applied in two or more, the compressed air supply line 173 may be used by pulling out the number of vibration suppression modules 140.
- Compressed air supply line 173 may be provided with a plurality of valves (174a, 174b).
- the valves 174a and 174b may be solenoid valves that are electronically controllable.
- the vibration reduction module 140 is detachably coupled to the bottom plug 160.
- the vibration reduction module 140 is coupled to the bottom plug 160 as described above, the installation and maintenance of the vibration reduction module 140 is very easy.
- the vibration reduction module 140 does not necessarily need to be coupled to the bottom plug 160.
- the vibration reduction module 140 includes a module body 142 having a compressed air flow line 143 through which compressed air flows, and coupled to be inserted into the through part 163 of the bottom plug 160; It may include a body flange 144 formed on the other side of the module body 142 and disposed on the seat 164 of the bottom plug 160.
- the module body 142 may be provided as a cylindrical structure and is coupled to be inserted into the through part 163 of the bottom plug 160.
- the module body 142 may be made of plastic injection molding.
- a protrusion 141 is formed at an insertion end of the module body 142. After the module body 142 is inserted into the through part 163 of the bottom plug 160, the protrusion 141 is formed on the hull 110. It takes the form protruding from the outer surface. Therefore, the air bubbles may be formed by spraying the bubble along the outer surface of the hull 110 through a bubble spray hole 141a formed at the end of the protrusion 141.
- the protruding portion 141 having a shape protruding from the outer surface of the hull 110 has an inclined wall portion 141b connected obliquely at one side of the module body 142 and a module body 142 at the end of the inclined wall portion 141b. It may include a vertical wall portion (141c) disposed perpendicular to the surface of the). As the protrusion 141 has the inclined wall portion 141b, that is, the frictional resistance with water can be reduced by the structural streamlined shape of the inclined wall portion 141b.
- the bubble injection hole (141a) may be formed in the vertical wall portion (141c), the bubble injection hole (141a) may be a circular hole or an oval hole, the number is also appropriately selected Can be.
- the body flange 144 and the bottom plug 160 are provided with a plurality of first and second through holes 144a and 160a which communicate with each other such that the bolt B is fastened.
- first and second through holes 144a and 160a are four as shown in the figure, the number thereof may be appropriately changed.
- the compressed air flow line 143 has a straight portion 143a and a protrusion 141 having one end connected to the compressed air supply line 173 of the compressed air supply unit 170 and extending along the longitudinal direction of the module body 142. It is disposed inside the) and includes a cross section (143b) that intersects the straight section (143a) and the bubble injection hole (141a) is formed at the end.
- Figure 9 is a control block diagram of a vibration reduction type ship according to a first embodiment of the present invention.
- the vibration reduction vessel of the present embodiment may further include a variable pressure detecting unit 180 and a controller 190.
- the method of simply turning on / off the vibration suppression module 140 may be considered, if the vibration suppression module 140 is controlled by the controller 190, the electromotive force may be more efficiently. It may be advantageous to reduce.
- the fluctuation pressure detecting unit 180 is provided on the hull 110 to detect the fluctuation pressure generated when the propeller 120 is operated. As illustrated in FIG. 3, four P1 to P4 positions may be provided, or one may be provided at a specific portion, or a plurality may be provided at appropriate positions as necessary.
- the controller 190 may control the generation of bubbles through the vibration reduction module 140 based on the information from the variable pressure sensing unit 180.
- the controller 190 controls the operation of the compressor 172 or the valves 174a and 174b connected to the vibration reduction module 140 based on the information of the variable pressure sensing unit 180 to control the vibration reduction module 140. It is possible to control whether bubbles are generated or the amount of bubbles generated.
- the controller 190 may turn on the operation of the compressor 172 and the valves 174a and 174b since it may be determined that the propeller 120 is operating at this time. ) To control the air bubbles to be generated through the vibration reduction module 140.
- the controller 190 may turn off the operation of the compressor 172 and the valves 174a and 174b, or if the speed of the compressor 172 is lowered. Control such as keeping the openings of the valves 174a and 174b small.
- the controller 190 turns on the operations of the compressor 172 and the valves 174a and 174b so that bubbles are generated through the vibration reduction module 140.
- the speed control of the compressor 172 or the opening degree control of the valves 174a and 174b may be performed based on the information of the fluctuation pressure detecting unit 180, that is, the fluctuation pressure degree.
- the controller 190 performing this role may include a central processing unit 191 (CPU), a memory 192 (MEMORY), and a support circuit 193 (SUPPORT CIRCUIT).
- CPU central processing unit
- MEMORY memory 192
- SUPPORT CIRCUIT SUPPORT CIRCUIT
- the central processing unit 191 may be one of various computer processors that can be industrially applied to control the operation of the compressor 172 or the valves 174a and 174b in the vessel of this embodiment.
- the memory 192 is connected to the CPU 191 in operation.
- the memory 192 may be installed locally or remotely as a computer readable recording medium, and may be readily available, such as, for example, random access memory (RAM), ROM, floppy disk, hard disk, or any digital storage form. At least one or more memories.
- the support circuit 193 (SUPPORT CIRCUIT) is operatively coupled to the central processing unit 191 to support typical operation of the processor.
- Such support circuit 193 may include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.
- the compressor 172 When the compressor 172 is operated and compressed air is supplied through the compressed air supply line 173, the compressed air flows along the straight section 143a and the cross section 143b to flow through the bubble spray hole 141a. It is sprayed in the stern direction in water.
- the vibration force may be prevented from occurring due to the increase in vibration force due to the fluctuation pressure generated during the operation of the propeller 120.
- the propeller 120 the shape or size of the wing itself differently as in the prior art, to improve the shape of the ship's tail, or to add a separate reinforcement for blocking noise and vibration, or bow
- a guide device for guiding the flow of water flowing in from or reducing the various losses such as reducing the size of the propeller 120, such as to effectively improve the noise and vibration problems, Rather, it is expected that it will help to improve the propulsion because it can significantly increase the size of the propeller (120).
- Figure 10 (a) is a schematic rear structure diagram of a vibration reduction vessel according to a second embodiment of the present invention, (b) is a modification.
- a ship in which a pair of propellers 220 are mounted on the hull 210 is disclosed.
- the vibration reduction module 140 may be disposed at a position biased toward one side of the center line (C / L), and the hull 210 is formed by forming an air layer on the surface of the hull 210 at the position. The vibration can be prevented from occurring.
- FIG. 11 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the third embodiment of the present invention.
- the structure of the compressed air flow line 343 provided in the vibration reduction module 340 is different from the first embodiment.
- an arc guide portion 343c for guiding the compressed air is further formed between the straight section 343a and the cross section 343b.
- the compressed air may be easily injected through the bubble spray holes 341a without vortex to form a bubble layer.
- the arc guide 343c is applied by processing the arc between the straight section 343a and the cross section 343b into an arc, but by arranging a separate structure in this region and compressing it. It may be to guide the air, which should also fall within the scope of the present invention.
- FIG. 12 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the fourth embodiment of the present invention.
- a plurality of compressed air flow lines 443 provided in the vibration reduction module 440 are independently provided.
- the bubble injection hole 441a may be provided by the number of compressed air flow lines 443, and through this structure, the efficiency or amount of bubble generation may be increased.
- FIG. 13 is a cross-sectional structural view of the vibration reduction module area in the vibration reduction vessel according to the fifth embodiment of the present invention.
- porous cap 580 is further coupled to the bubble spray hole 541a of the vibration reduction module 540.
- the porous cap 580 may be a disk-shaped structure in which a plurality of through holes 581 are formed, as enlarged in FIG. 13.
- the porous cap 580 having the plurality of through holes 581 when applied, the compressed air passes through the plurality of through holes 581, and the air is faster and at the same time, the air is finely broken. Because of this, there is an advantage that can make a lot of finer bubbles. In addition, it may be advantageous to prevent the marine floats from entering the vibration reduction module 540.
- the outer surface of the porous cap 580 may be provided with a detachable coupling portion 582 as a means that is detachably coupled to the vibration reduction module 140, in this embodiment, the removable coupling portion 582 is in the form of a groove. It can have
- a protrusion (not shown) fitted to the detachable coupler 582 may be formed on the opposite side.
- the opposite is also possible. That is, the protrusions may be formed on the outer surface of the porous cap 580, and the porous cap 580 may be easily fitted by making a groove in the vibration suppression module 140 on the opposite side.
- porous cap 580 it is also possible to ignore these matters and to allow the porous cap 580 to be coupled to the vibration reduction module 140 by a screw method.
- FIG 14 and 15 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the sixth embodiment of the present invention, respectively.
- the vibration reduction module 640 provided in the vibration reduction vessel of the present embodiment may further include a line opening and closing module 680.
- the line opening / closing module 680 is provided in the compressed air flow line 643 of the vibration reduction module 640 to selectively open and close the opening of the compressed air flow line 643.
- the opening of the compressed air flow line 643 of the vibration reduction module 640 should be appropriately opened and closed.
- the line opening / closing module 680 may be provided.
- the line opening / closing module 680 opens the compressed air flow line 643 when the compressed air is supplied through the compressed air flow line 643, and shields the compressed air flow line 643 when the supply of the compressed air is stopped.
- the non-powered line opening and closing module 680 is applied.
- the vibration reduction module 640 may be considered to open and close the compressed air flow line (643) of the vibration reduction module 640 through the remote control by adding a module capable of electronic control.
- a module capable of electronic control since the structure of the device is complicated and cost increase is expected, it may be desirable to apply the non-powered line opening / closing module 680 as in the present embodiment.
- the scope of the present invention does not need to be limited to these matters.
- the non-powered line opening and closing module 680 may include a ball chamber 681, a ball member 682, a first elastic body 683, and an elastic support 684.
- the ball chamber 681 is a separate independent space provided on the compressed air flow line 643.
- the ball chamber 681 is provided on the compressed air flow line 643, and the width of the ball chamber 681 is formed to be partially narrower than the previous region with respect to the direction in which the compressed air flows, thereby forming a place where the ball member 682 is disposed.
- the ball chamber 681 may have a structure having the same width as that of the compressed air flow line 643 after the width is narrowed from the compressed air flow line 663 and then gradually widened again.
- the scope of the present invention is not limited to the shape thereof.
- the ball member 682 is disposed in the ball chamber 681 to open and close the communication port H through which the compressed air flow line 643 and the ball chamber 681 communicate.
- the first elastic body 683 is disposed between the ball member 682 and the elastic support 684.
- the first elastic body 683 which can be applied to the torsion coil compression spring, is compressed when compressed air is supplied to open the compressed air flow line 643 through the ball member 682 and when the supply of compressed air is stopped. It expands to serve to cause the ball member 682 to shield the compressed air flow line 643.
- the elastic support 684 is formed to protrude radially inward on the wall of the compressed air flow line 643 to prevent the positional deviation of the first elastic body 683.
- the compressor 672 When the compressor 672 is operated to supply compressed air through the compressed air supply line 673, the compressed air flows along the compressed air supply line 673 and is injected in the water through the bubble injection hole 641a.
- the opening of the compressed air supply line 673 is opened through the non-powered line opening / closing module 680. That is, when the compressor 672 is operated to supply compressed air through the compressed air supply line 673, the ball member 682 is pushed by the force of the compressed air supplied to compress the first elastic body 683. Then, as the ball member 682 is pushed, since the communication hole H through which the compressed air flow line 643 communicates with the ball chamber 681 is opened, compressed air is supplied through this space to supply the bubble spray holes 641a. Sprayed in water through.
- the compressed air when the compressed air is injected in the water, the compressed air is injected to form an air layer on the hull 110 while forming air bubbles, thereby increasing the vibration force due to the fluctuation pressure generated when the propeller 120 operates.
- the vibration can be prevented from occurring.
- 16 and 17 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the seventh embodiment of the present invention, respectively.
- the non-power line opening / closing module 780 of the vibration reduction module 740 provided in the vibration reduction type ship of the present embodiment is rotatably disposed in the compressed air flow line 743 to provide compressed air flow.
- the line opening and closing plate 781 is shown as a bar-shaped structure, the line opening and closing plate 781 may be a disk structure similar to the cross-sectional shape of the compressed air flow line 143.
- a hinge 783 is connected to one end of the line opening and closing plate 781 to form a rotation axis of the line opening and closing plate 781.
- a second elastic member 782 for example, a second elastic member 782, which may be applied as a leaf spring or a torsion coil spring, is connected to the line opening and closing plate 781 rotated as shown in FIG. It serves to return to.
- a stopper 784 is provided on the wall of the compressed air flow line 143 to restrict the rotation of the line opening and closing plate 781 so that the line opening and closing plate 781 can be returned to its original position by the elastic force of the second elastic body 782. do.
- an opening of the compressed air supply line 173 is opened through the non-powered line opening / closing module 780 as shown in FIG. 17. That is, when compressed air is supplied through the compressed air supply line 173, the line opening and closing plate 781 is rotated downward with the hinge 783 as the axis by the force of the compressed air supplied, thereby compressing the air supply line 173. Since it is open, compressed air is supplied through this space, and bubbles may be injected in the water through the bubble injection holes 141a.
- the compressed air flow line 143 is shielded. Therefore, it is possible to effectively prevent foreign matters such as floats and barnacles from entering the hull 110 through the compressed air flow line 143.
- FIG 18 and 19 are views showing the operation of the line opening and closing module applied to the vibration reduction module of the vibration reduction type vessel according to the eighth embodiment of the present invention.
- the non-powered line opening / closing module 880 of the vibration reduction module 840 provided in the vibration reduction vessel of this embodiment is almost similar to the seventh embodiment described above.
- the non-powered line opening and closing module 880 of the present embodiment is opening and closing the bubble injection hole (141a) according to whether or not compressed air is supplied from the outside of the bubble injection hole (141a) formed at the end of the protrusion 141. It is different from the seventh embodiment.
- the non-powered line opening / closing module 880 of this embodiment also includes a line opening and closing plate 881 for opening and closing the bubble injection hole 141a, a hinge 882 for forming a rotation axis of the line opening and closing plate 881, and a line opening and closing plate. And an elastic body 883 connected to the 881 to provide an elastic force for returning the line opening and closing plate 881 to its original position.
- the stopper 284 described in the second embodiment is not necessary.
- an opening of the compressed air supply line 173 is opened through the non-powered line opening / closing module 880 as shown in FIG. 19. That is, when compressed air is supplied through the compressed air supply line 173, the line opening and closing plate 881 is rotated with the hinge 882 as the center by the force of the compressed air supplied to open the bubble spray hole 141a. Bubbles can be sprayed in the water.
- the present invention can be applied to a ship.
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Abstract
Description
Claims (19)
- 후미에 프로펠러가 마련되는 선체; 및상기 프로펠러의 동작 시 상기 프로펠러에 이웃된 상기 선체의 표면에 반사파를 발생시키는 에어 레이어(air layer)를 형성시켜 상기 선체 쪽으로의 기진력을 저감시키는 기진력 저감모듈을 포함하며,상기 기진력 저감모듈은 상기 선체의 상하 방향을 따라 상기 프로펠러의 회전축심을 통과하는 센터라인을 기준으로 하여 일측으로 치우쳐 배치되는 기진력 저감형 선박.
- 제1항에 있어서,상기 기진력 저감모듈에 의해 형성되는 상기 에어 레이어는 상기 프로펠러에 이웃된 상기 선체의 표면 일부 영역에 국부적으로 형성되는 기진력 저감형 선박.
- 제1항에 있어서,상기 기진력 저감모듈은 상기 센터라인을 기준으로 하여 상기 프로펠러가 회전되는 방향 쪽으로 치우쳐 배치되는 기진력 저감형 선박.
- 제1항에 있어서,상기 기진력 저감모듈은 상기 선체의 선수에서 선미 방향을 따라 에어를 분사하여 상기 선체의 표면에 에어 레이어를 형성시키는 기진력 저감형 선박.
- 제1항에 있어서,상기 기진력 저감모듈은,상기 선체의 벽면에 결합되되 상기 선체의 외표면으로부터 돌출되는 돌출부를 구비하며, 상기 돌출부에 형성되는 기포분사공을 통해 상기 선체의 외표면으로 기포를 발생시켜 상기 선체의 표면에 에어 레이어를 형성시키는 기진력 저감형 선박.
- 제5항에 있어서,상기 기포분사공 영역에 결합되는 다공성 캡(cap)을 더 포함하는 기진력 저감형 선박.
- 제1항에 있어서,상기 선체의 벽면에 결합되며, 상기 기진력 저감모듈이 착탈 가능하게 결합되는 바텀 플러그(bottom plug); 및상기 기진력 저감모듈로 압축공기를 공급하는 압축공기 공급부를 더 포함하는 기진력 저감형 선박.
- 제7항에 있어서,상기 압축공기 공급부는,상기 선체의 일측에 마련되는 컴프레서;상기 컴프레서와 상기 기진력 저감모듈을 직결시키는 압축공기 공급라인; 및상기 압축공기 공급라인에 마련되어 상기 압축공기 공급라인을 따라 유동되는 압축공기의 유동을 단속하는 적어도 하나의 밸브를 포함하는 기진력 저감형 선박.
- 제7항에 있어서,상기 기진력 저감모듈은,상기 압축공기 공급부로부터의 압축공기가 유동되는 압축공기 유동라인이 내부에 형성되며, 상기 바텀 플러그의 관통부에 삽입되게 결합되되 일측에 상기 돌출부가 형성되는 모듈 바디; 및상기 모듈 바디의 타측에 형성되고 상기 바텀 플러그의 자리턱에 배치되는 바디 플랜지를 포함하는 기진력 저감모듈을 포함하는 기진력 저감형 선박.
- 제9항에 있어서,상기 돌출부는,상기 모듈 바디의 일측변에서 경사지게 연결되는 경사벽부; 및상기 경사벽부의 단부에서 상기 모듈 바디의 표면으로 수직되게 배치되는 수직벽부를 포함하는 기진력 저감형 선박.
- 제9항에 있어서,상기 압축공기 유동라인은,상기 모듈 바디의 길이 방향을 따라 연장되는 직선구간부; 및상기 돌출부의 내부에 배치되되 상기 직선구간부와 교차되고 단부에 상기 기포분사공이 형성되는 교차구간부를 포함하는 기진력 저감형 선박.
- 제11항에 있어서,상기 직선구간부와 상기 교차구간부 사이에는 상기 압축공기를 안내하는 아크형(arc) 안내부가 더 형성되는 기진력 저감형 선박.
- 제11항에 있어서,상기 직선구간부와 상기 교차구간부는 독립적으로 다수 개 배치되는 기진력 저감형 선박.
- 제1항에 있어서,상기 선체에 마련되어 상기 프로펠러 동작 시 발생되는 변동압력을 감지하는 변동압력 감지부; 및상기 변동압력 감지부로부터의 정보에 기초하여 상기 기진력 저감모듈을 통한 기포 발생을 컨트롤하는 컨트롤러를 더 포함하는 기진력 저감형 선박.
- 제9항에 있어서,상기 기진력 저감모듈의 압축공기 유동라인에 마련되어 상기 압축공기 유동라인의 개구를 선택적으로 개폐하는 라인 개폐모듈을 더 포함하는 기진력 저감형 선박.
- 제15항에 있어서,상기 라인 개폐모듈은,상기 압축공기 유동라인을 통해 상기 압축공기가 공급될 때 상기 압축공기 유동라인을 개방하고 상기 압축공기의 공급이 정지될 때 상기 압축공기 유동라인을 차폐하는 무동력 라인 개폐모듈인 기진력 저감형 선박.
- 제16항에 있어서,상기 무동력 라인 개폐모듈은,상기 압축공기 유동라인 내에 배치되어 상기 압축공기 유동라인을 개폐하는 볼 부재; 및상기 볼 부재와 연결되며, 상기 압축공기가 공급될 때 압축되어 상기 볼 부재를 통해 상기 압축공기 유동라인이 개방되도록 하고 상기 압축공기의 공급이 정지될 때 팽창되어 상기 볼 부재로 하여금 상기 압축공기 유동라인이 차폐되도록 하는 제1 탄성체를 포함하는 기진력 저감형 선박.
- 제17항에 있어서,상기 무동력 라인 개폐모듈은,상기 압축공기 유동라인 상에 마련되며, 상기 압축공기가 유동되는 방향에 대하여 앞선 영역보다 폭이 부분적으로 좁게 형성되어 상기 볼 부재가 배치되는 장소를 형성하는 볼 챔버; 및상기 볼 챔버에 마련되어 상기 제1 탄성체를 지지하는 탄성체 지지부를 더 포함하는 기진력 저감형 선박.
- 제16항에 있어서,상기 무동력 라인 개폐모듈은,상기 압축공기 유동라인 내에 회전 가능하게 배치되어 상기 압축공기 유동라인을 선택적으로 개폐하는 라인 개폐판;상기 라인 개폐판과 연결되고 상기 라인 개폐판이 원위치로 복귀되는 방향으로 탄성바이어스되는 제2 탄성체; 및상기 압축공기 유동라인의 벽체에 마련되어 상기 라인 개폐판의 회동을 제한하는 스토퍼를 포함하는 기진력 저감형 선박.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2014531741A JP2014526421A (ja) | 2011-10-07 | 2012-10-08 | 起振力低減型船舶 |
CN201280048877.7A CN103842246A (zh) | 2011-10-07 | 2012-10-08 | 激振力减小式船舶 |
US14/350,356 US20140230715A1 (en) | 2011-10-07 | 2012-10-08 | Excitation force reducing type ship |
EP12837735.5A EP2765077A4 (en) | 2011-10-07 | 2012-10-08 | SHIP OF THE TYPE THAT REDUCES THE FORCE OF EXCITATION |
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KR1020110102691A KR20130038054A (ko) | 2011-10-07 | 2011-10-07 | 선박 |
KR10-2011-0102691 | 2011-10-07 | ||
KR1020120002743A KR101334332B1 (ko) | 2012-01-10 | 2012-01-10 | 선박 |
KR1020120002744A KR101399961B1 (ko) | 2012-01-10 | 2012-01-10 | 선박 |
KR10-2012-0002743 | 2012-01-10 | ||
KR10-2012-0002744 | 2012-01-10 | ||
KR10-2012-0111227 | 2012-10-08 | ||
KR1020120111227A KR20140045104A (ko) | 2012-10-08 | 2012-10-08 | 기진력 저감형 선박 |
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JP (1) | JP2014526421A (ko) |
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JP6509774B2 (ja) * | 2016-04-27 | 2019-05-08 | 双葉電子工業株式会社 | 通信システム、送信機、受信機及び通信方法 |
KR101884534B1 (ko) * | 2016-12-19 | 2018-08-01 | 한국해양과학기술원 | 쌍축선의 프로펠러 회전각 조절을 통한 선체 변동압력 저감 방법 |
KR101879515B1 (ko) * | 2016-12-19 | 2018-07-18 | 한국해양과학기술원 | 쌍축선의 실시간 진동 정보와 프로펠러 회전각 조절을 통한 변동압력 저감 방법 |
CN109229278B (zh) * | 2018-09-27 | 2021-03-05 | 广船国际有限公司 | 一种船舶减振结构及船舶 |
CN115195979A (zh) * | 2022-07-21 | 2022-10-18 | 江苏科技大学 | 一种模块化磁力耦合电力吊舱推进器 |
US20240166306A1 (en) * | 2022-11-22 | 2024-05-23 | John Dixon | System and method for delivering air to a submerged ship surface |
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Also Published As
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JP2014526421A (ja) | 2014-10-06 |
CN103842246A (zh) | 2014-06-04 |
US20140230715A1 (en) | 2014-08-21 |
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