CN103842246A - Excitation force reducing type ship - Google Patents
Excitation force reducing type ship Download PDFInfo
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- CN103842246A CN103842246A CN201280048877.7A CN201280048877A CN103842246A CN 103842246 A CN103842246 A CN 103842246A CN 201280048877 A CN201280048877 A CN 201280048877A CN 103842246 A CN103842246 A CN 103842246A
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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
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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
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Disclosed is an excitation force reducing type ship. An excitation force reducing type ship according to one embodiment of the present invention comprises: a hull having a rear end with a propeller;and an excitation force reducing module which forms an air layer for generating reflected waves on a surface of the hull neighboring the propeller during an operation of the propeller so as to reduce the excitation force in the direction of the hull, wherein the excitation force reducing module can be arranged eccentrically with respect to a center line penetrating through the center of the axis of rotation of the propeller in a vertical direction of the hull.
Description
Technical field
The present invention relates to a kind of disturbance force and reduce formula boats and ships, and relate more specifically to a kind of disturbance force with the improvement structure that reduces disturbance force and reduce formula boats and ships.
Background technology
In the time that the screw propeller in the stern that is arranged on boats and ships rotates under water, water flows along the surface of the alar part of screw propeller and produce differential water pressures between the front surface of the alar part of screw propeller and rear surface.Differential water pressures produces and makes the thrust of boats and ships in marine movement.
When screw propeller operation is during for boats and ships mobile, that is, when screw propeller rotates under water, produce under water fluctuation of pressure due to the screw propeller as swivel.Fluctuation of pressure is increased to the disturbance force of the hull of boats and ships, makes to produce in hull the vibration that comprises noise.
Particularly, in the time producing air pocket by screw propeller under water, disturbance force further increases, and boats and ships may seriously be vibrated.
In the time producing under water low pressure force, the gas being included in water is escaped and is gathered in low pressure force from water, makes to produce bubble.Therefore, in the time that the bubble producing arrives high pressure spot, bubble breaks rapidly, makes to produce under water strong pressure fluctuation.
The above problem increasing due to fluctuation of pressure in order to solve disturbance force, attempt the whole bag of tricks, for example, design in a different manner shape or the size of the alar part of screw propeller, improve the shape of the stern of boats and ships, increase the independent tension member that cuts off noise and vibration, connect the guiding device of guiding from the current of the fore of boats and ships, or reduce the size of screw propeller.But these methods all do not have essence effect for reducing disturbance force.
On the other hand, in the case of such as needing peace and quiet the mobile boats and ships for the pleasure boat of travelling or warship, must solve as quickly as possible as disturbance force and pass to the problem that fluctuation of pressure that the vibration that comprises noise of hull causes due to screw propeller increases.Therefore, need to be about the research and development of above problem.
Summary of the invention
Technical matters
The invention provides a kind of disturbance force and reduce formula boats and ships, described boats and ships can prevent the generation of the vibration in hull in the time that disturbance force increases due to the fluctuation of pressure producing in the operating period of screw propeller.
Beneficial effect of the present invention
According to the present invention, can prevent the generation of the vibration in hull in the time that disturbance force increases due to the fluctuation of pressure producing in the operating period of screw propeller.
Accompanying drawing explanation
Fig. 1 is the topology view that disturbance force according to an embodiment of the invention reduces the propeller area of formula boats and ships;
Fig. 2 is the schematic rear structure view of Fig. 1;
Fig. 3 shows disturbance force and reduces the test sample of module;
Fig. 4 A and Fig. 4 B are the charts that shows the result of the test sample of Fig. 3;
Fig. 5 is the structure for amplifying view of the region A of Fig. 1;
Fig. 6 is the decomposition view of Fig. 5;
Fig. 7 A is the transparent view of Fig. 6;
Fig. 8 is the back perspective view that disturbance force reduces module;
Fig. 9 is the control diagram of block that the disturbance force of Fig. 1 reduces formula boats and ships;
Figure 10 A is the schematic rear structure view that disturbance force according to another embodiment of the invention reduces formula boats and ships, and Figure 10 B is modified example.
Figure 11 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region;
Figure 12 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region;
Figure 13 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region;
Figure 14 and Figure 15 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the pipeline opening/closing module of module;
Figure 16 and Figure 17 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the pipeline opening/closing module of module; And
Figure 18 and Figure 19 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the pipeline opening/closing module of module.
The specific embodiment
According to an aspect of the present invention, disturbance force reduces formula boats and ships and comprises having the hull of the screw propeller that is arranged on stern place and forming on the surface of the hull adjacent with screw propeller by the operating period at screw propeller and produce the air layer of backward wave and reduce to reduce module towards the disturbance force of the disturbance force of hull, wherein disturbance force reduce module be arranged to respect in the vertical direction of hull through the line of centers of the rotation axis of screw propeller towards offseting to one side.
Reducing by disturbance force the air layer that module forms can be formed in the surperficial regional area of the hull adjacent with screw propeller.
Disturbance force reduces module and can be arranged to offset to one side with respect to line of centers court in the direction of screw propeller rotation.
Disturbance force reduces module can be by spraying air and form air layer on the surface of hull to the direction of stern at the fore from hull.
Disturbance force reduces module and can comprise and be connected to the wall of hull and from the outstanding protrusion of the outside face of hull, and disturbance force reduces module by forming air layer on the surface via being formed on that bubble squit hole in protrusion produces bubble on the outside face of hull and at hull.
Disturbance force reduces formula boats and ships can also comprise perforated lid, and described perforated lid is connected to the region of bubble squit hole.
Disturbance force reduces formula boats and ships and can also comprise: bottom plug, and described bottom plug is connected to the wall of hull, and disturbance force reduces module and can dismantle and be connected to described bottom plug; With for pressurized air being supplied to disturbance force reduce the pressurized air supply department of module.
Pressurized air supply department can comprise: the compressor that is arranged on a side of hull; Reduce the pressurized air supply line of module for directly connecting compressor and disturbance force; With at least one valve, described at least one valve is arranged on pressurized air supply line and regulates flow along pressurized air supply line compressed-air actuated to flow.
Disturbance force reduces module and can comprise: module body, described module body comprises the pressurized air flow line being formed in module body, the pressurized air of being supplied by pressurized air supply department flows through described pressurized air flow line, and module body is by inserting running through of bottom plug is connected to the portion of running through of bottom plug and comprises a side that is formed on module body protrusion in portion; And body flange, described body flange is formed on the opposite side of module body and is arranged on the supporting base of bottom plug.
Protrusion can comprise: inclined wall portion, and described inclined wall portion is connected to a side of module body to tilt; And vertical wall portion, described vertical wall portion is arranged vertically towards the surface of module body from the end of inclined wall portion.
Pressurized air flow line can comprise: linearity range part, and described linearity range part is extended along the longitudinal direction of module body; With traversing section part, the inner side that described traversing section part is arranged in protrusion is to cross linearity range part and to comprise the bubble squit hole of the end that is formed on traversing section part.
Be used for guiding compressed-air actuated arc formula guide part can further be arranged between linearity range part and traversing section part.
Linearity range part and traversing section part can be arranged to multiple independently.
Disturbance force reduces formula boats and ships and can also comprise: fluctuation of pressure detecting unit, and described fluctuation of pressure detecting unit is arranged on hull and detects the fluctuation of pressure producing in the operating period of screw propeller; And controller, described controller is for reducing the generation of the bubble that module carries out by disturbance force according to the information control from fluctuation of pressure detecting unit output.
Disturbance force reduces formula boats and ships can also comprise pipeline opening/closing module, and described pipeline opening/closing module is arranged on the pressurized air flow line that disturbance force reduces module and the opening of opening/closing pressurized air flow line optionally.
Pipeline opening/closing module can be non-power pipeline opening/closing module, when by pressurized air flow line supply pressurized air, described non-power pipeline opening/closing module is opened pressurized air flow line, and in the time of compressed-air actuated supply failure, described non-power pipeline opening/closing module closes compression Air Flow pipeline.
Non-power pipeline opening/closing module can comprise: spherical component, and described spherical component is arranged in pressurized air flow line and opening/closing pressurized air flow line; With the first elastic component, described the first elastic component is connected to spherical component, and in the time of supply pressurized air, described the first elastic component is compressed to allow spherical component to open pressurized air flow line, and in the time of compressed-air actuated supply failure, described the first elastic component expands to allow spherical component closes compression Air Flow pipeline.
Non-power pipeline opening/closing module can also comprise: spherical chamber, described spherical chamber is arranged on pressurized air flow line and forms the space that holds spherical component, and described space comprises the part compared with the width of the downstream portion in the mobile direction of pressurized air with relatively little width; And elastic component support portion, described elastic component support portion is arranged in spherical chamber and supports the first elastic component.
Non-power pipeline opening/closing module can comprise: pipeline opening/closing plate, and described pipeline opening/closing plate can be arranged in pressurized air flow line and opening/closing pressurized air flow line optionally rotatably; The second elastic component, described the second elastic component is connected to pipeline opening/closing plate and that pipeline opening/closing plate is turned back in the direction of initial position is resiliently biased; And retainer, described retainer is arranged on the wall body of pressurized air flow line and limits the pivotable of pipeline opening/closing plate.
The specific embodiment
Below embodiment is elaborated, has shown in the accompanying drawings the example of described embodiment, wherein identical Reference numeral represents identical element in whole accompanying drawing.In this, each embodiment can have different forms and should not be construed as limited to the description of carrying out here.Therefore, below only describe embodiment with reference to the accompanying drawings, so that the many aspects of this description to be described.
Fig. 1 is the topology view that disturbance force according to an embodiment of the invention reduces the propeller area of formula boats and ships.Fig. 2 is the schematic rear structure view of Fig. 1.
See figures.1.and.2, that disturbance force reduces formula boats and ships according to the boats and ships of the present embodiment, and can comprise that the hull 110 of the screw propeller 120 having in the stern that is arranged on boats and ships and disturbance force reduce module 140, described disturbance force reduces module 140 is formed for producing backward wave on the surface of the hull 110 adjacent with screw propeller 120 air layer (with reference to figure 1 and Fig. 5) by the operating period at screw propeller 120 and reduces towards hull 110 disturbance forcies.
Boats and ships in the present embodiment can comprise merchant ship, warship, fishing boat, aircraft carrier, drilling ship, pleasure boat and special operation ship and floating marine structure.
The rudder 130 that is used for the direct of travel of controlling boats and ships arranges around screw propeller 120.Rudder 130 can be ordinary rudder or bulb rudder.
In the time that screw propeller 120 operates as mentioned above, that is, and when screw propeller 120 rotates under water, because screw propeller 120 occurs fluctuation of pressure under water as swivel.Fluctuation of pressure produces by the hull 110 that disturbance force is made that is increased to hull 110 vibration that comprises noise.
When boats and ships are for example to need peace and quiet mobilely during for the pleasure boat of travelling or warship, the vibration that passes to hull 110 may be a huge problem.In order to prevent above problem, that is, for the vibration producing in hull 110 that prevents from causing due to the disturbance force that the fluctuation of pressure occurring under water in the operating period of screw propeller 120 increases, the present embodiment has proposed a kind of disturbance force and has reduced module 140.
With reference to Fig. 2, disturbance force reduces module 140 and can be arranged to offset to one side with respect to the line of centers C/L court of the rotation axis that passes through screw propeller 120 in the vertical direction at hull 110.
For example, in the present embodiment, disturbance force reduces module 140 can be arranged to the direction skew of rotating towards screw propeller 120 with respect to the line of centers C/L of hull 110.Disturbance force reduces module 140 and sprays the air layer (with reference to figure 1 and Fig. 5) of air with the surface formation generation backward wave at hull at the fore from hull 110 to the direction of stern.The present invention is not limited to this, and disturbance force reduces module 140 and can be arranged to be offset in the direction of the opposite direction rotating with screw propeller 120 with respect to the line of centers C/L of hull 110.
No matter disturbance force reduces the position of module 140, disturbance force reduces module 140 to be all enough to form air layer in the surperficial subregion of the hull 110 adjacent with screw propeller 120.In other words, air layer can only be formed in the subregion in surperficial whole region of the not covering hull 110 adjacent with screw propeller 120.Do like this, advantageously can reduce the disturbance force towards hull 110 by the operation of backward wave.
Fig. 2 is the schematic rear structure view of Fig. 1.Although Fig. 2 shows and is provided with in the present embodiment two disturbance forcies and reduces module 140, the quantity that disturbance force reduces module 140 can be one or three or more.
Due to be arranged on disturbance force on hull 110 reduce module 140 in the direction towards stern on the surface of hull 110 air layer of form certain width (with reference to figure 1 and Fig. 5), as shown in Figure 2, therefore can prevent the increase of the disturbance force causing due to the fluctuation of pressure that the operating period at screw propeller 120 occurs and in hull 110, produce vibration.
At length, the spherical pressure ripple being produced by air pocket in the operating period of screw propeller 120 can be propagated in all directions.As in the present embodiment, no matter ship is port and starboard, in the time that air layer is formed on the surface of the hull 110 adjacent with screw propeller 120 as shown in Figure 1 and Figure 5, a part that is incident on the spherical pressure ripple on air layer from air layer with compared with incident wave close to the phase place of 180 ° almost to external reflectance.The incident wave for spherical pressure ripple being incident on air layer can be offset/be reduced to backward wave.Therefore, can reduce to pass to from air layer outside the fluctuation of pressure of hull 110.In the time passing to the fluctuation of pressure of hull 110 from air layer outside and reduce, disturbance force reduces, and the noise or the vibration that therefore produce in hull 110 reduce naturally.
In order to prove above content, boats and ships are tested, and shown test result with chart.
Fig. 3 shows disturbance force and reduces the test sample of module 140.Fig. 4 A and Fig. 4 B are the charts that shows the result of the test sample of Fig. 3.
In the I1 of Fig. 3 and the region STBD (starboard) of I2, disturbance force reduces module 140 and spray air in fore and aft direction, thereby on the surface of hull 110, forms the air layer of certain width.Pressure pulsation sensors 1-4 is arranged in position P1-P4 and sentences gaging pressure fluctuation.When forming when air layer, fluctuation of pressure decreased average is about 50% as shown in Figure 4 A, and the vibration in stern trimming flag region reduces 80% or more as shown in Figure 4 B.Particularly, can decreased average 50% or more at position P2, the P3 and the P4 place fluctuation of pressure that are positioned at air layer outside.
According to above result, according to the embodiment shown in Fig. 1 and Fig. 5, when air layer reduces on surface that module 140 is formed on the hull 110 adjacent with screw propeller 120 by disturbance force, the fluctuation of pressure that passes to hull 110 from air layer outside reduces, and disturbance force can be reduced.
Disturbance force as above described reduced the detailed construction of module 140 referring to Fig. 5-8.Fig. 5 is the structure for amplifying view of the region A of Fig. 1.Fig. 6 is the exploded drawings of Fig. 5.Fig. 7 is the transparent view of Fig. 6.Fig. 8 is the back perspective view that disturbance force reduces module.
With reference to Fig. 5-8, be applied to the disturbance force that reduces formula boats and ships according to the disturbance force of the present embodiment and reduce module 140 and comprise outshot 141, described outshot 141 is connected to the wall of the hull 110 adjacent with screw propeller 120 outstanding from the outside face of hull 110.Disturbance force reduces module 140 and produces bubble by the bubble squit hole 141a being formed in outshot 141 towards the outside face of hull 110, thereby forms the air layer with certain width on the surface of hull 110, as shown in Figure 1 and Figure 5.
Reduce module 140 in order to assemble disturbance force, bottom plug 160 is connected to the wall of hull 110.When being arranged on pressurized air feeding unit 170 on hull 110 and receiving compressed-air actuated disturbance force and reduce module 140 and spray pressurized air under water, because bubble forms air layer on the surface of hull 110.
As shown in Figure 6, for being formed on hull 110 with the bottom plug 160 plug connection holes 111 that connect.The first inclined surface 112 and horizontal surface 113 are formed on the outer wall of plug connection holes 111.The second inclined surface 161 and the second horizontal surface 162 correspond respectively to the first inclined surface 112 and horizontal surface 113 is formed on bottom plug 160.
Next, as shown in Figure 1, pressurized air feeding unit 170 comprises compressor 172 in the steering gear compartment 171 that is arranged in a side that is arranged on hull 110 and the pressurized air supply line 173 that is directly connected compressor 172 and disturbance force and reduces module 140.
In the time a disturbance force is only set reduces module 140, a pressurized air supply line 173 is set.In the time two or more disturbance forcies are set reduce module 140, in the mode that reduces the number of module 140 with disturbance force, pressurized air supply line 173 is set.
Disturbance force reduces module 140 and is removably connected to bottom plug 160, as shown in Fig. 5-8.In the time that disturbance force reduces module 140 and is connected to as mentioned above bottom plug 160, be very easy to carry out disturbance force and reduce the I&M/repairing of module 140.
But because the correct protection domain of the present invention is not limited to this, therefore disturbance force reduces module 140 does not need to be connected to bottom plug 160.For example, disturbance force reduces module 140 and can embed integratedly in the wall of hull 110.This structure can belong to correct protection domain of the present invention.
Disturbance force reduce module 140 can comprise insert bottom plug 160 run through the module body 142 in part 163 and and be formed on a side relative with module body 142 and be arranged in bottom the body flange 144 of filling in 160 supporting base 164 places.The pressurized air flow line 143 that pressurized air flows through is formed on disturbance force and reduces in module 140.
The protrusion 141 with the shape for lugs outstanding from the outside face of hull 110 can comprise and being connected with the inclined wall portion 141b of the lopsidedness from module body 142 with from the end of inclined wall portion 141b to the vertically arranged vertical wall portion 141c in surface of module body 142.Because when protrusion 141 comprises inclined wall portion 141b, that is, in inclined wall portion 141b structure, be streamline-shaped, therefore can reduce the friction drag to water.
In the structure of protrusion 141, bubble squit hole 141a can be formed in vertical wall portion 141c.Bubble squit hole 141a can be circle or slotted eye.Can suitably select the quantity of bubble squit hole 141a.
Multiple the first through hole 144a and the second direct through groove 144a and 160a are respectively formed in body flange 144 and bottom plug 160 to interconnect by use bolt B.Although it is stable that the quantity of each in the first and second through hole 144a and 160a is four, can suitably change the quantity of the first and second through hole 144a and 160a.
An end of pressurized air flow line 143 is connected to the pressurized air supply line 173 of pressurized air feeding unit 170.Pressurized air flow line 143 comprises the linearity range part 143a extending along the longitudinal direction of module body 142 and is arranged in the traversing section part 143b that protrusion 141 inner sides are crossed linearity range part 143a and are formed with bubble squit hole 141a in its end.
Fig. 9 is the control diagram of block that the disturbance force of Fig. 1 reduces formula boats and ships.With reference to Fig. 9, reduce formula boats and ships according to the disturbance force of the present embodiment and can also comprise fluctuation of pressure detecting unit 180 and controller 190.Although can consider that On/Off disturbance force simply reduces the method for module 140, can more effectively reduce disturbance force in the time controlling disturbance force by controller 190 and reduce module 140.
Fluctuation of pressure detecting unit 180 is arranged in hull 110 and detects the fluctuation of pressure producing in the operating period of screw propeller 120.Fluctuation of pressure detecting unit 180 can be arranged on four positions of P1-P4 as shown in Figure 3, or is arranged on as required a specific location or is arranged on multiple suitable positions.
For example, in the time fluctuation of pressure being detected higher than preset reference value, can determine that screw propeller 120 operates, and the operation that therefore controller 190 is opened compressor 172 and valve 174a and 174b, thereby control the generation that reduces the bubble that module 140 carries out by disturbance force.
But in the time existing fluctuation of pressure fluctuation of pressure to be weaker than reference value, controller 190 can close compressor 172 and the operation of valve 174a and 174b, or can carry out control by reducing the speed of compressor 172 or the aperture of hold-off valve 174a and 174b.
In addition, once screw propeller 120 starts, controller 190 starts the operation of compressor 172 and valve 174a and 174b, makes to reduce module 140 by disturbance force and produces bubble.Then, controller 190 can be controlled the speed of compressor 172 or the aperture of valve 174a and 174b according to the information of fluctuation of pressure detecting unit 180 (, the degree of fluctuation of pressure).
Therefore,, when the general data relevant when the generation with above-mentioned variety of way control and bubble, not only can effectively prevent the generation of the vibration in hull, but also can reduce the degradation of energy causing due to the unnecessary operation of compressor 172.
As shown in Figure 9, controller 190 can comprise central processing unit (CPU) 191, memory device 192 and auxiliary circuit 193.
CPU191 can control according to one in the various computer processors of the operation of the compressor 172 in the boats and ships of the present embodiment and valve 174a and 174b industrial being applicable to.Memory device 192 is connected to CPU191.For the memory device 192 of computer readable recording medium storing program for performing can be installed by Local or Remote.Memory device 192 can be easy-to-use at least one memory device, for example, random access memory (RAM), read-only memory (ROM), floppy disk, hard disk or specific digital memeory.Auxiliary circuit 193 is connected to CPU191 to support the typical operation of handler.Auxiliary circuit 193 can comprise buffer memory, power supply, clock circuit, input/output circuitry, subsystem etc.
Reduce in the operation of module 140 at the disturbance force that structure forms as mentioned above, in the time that compressor 172 is operated and supply pressurized air by pressurized air supply line 173, pressurized air flows to be ejected by bubble squit hole 141a under water in the direction towards stern along linearity range part 143a and traversing section part 143b.
In the time that pressurized air is sprayed under water by force, pressurized air forms bubble, and therefore bubble forms the air layer with certain width on the surface of the hull 110 adjacent with screw propeller 120, as shown in Figure 1 and Figure 5.
As mentioned above, in the process that the spherical pressure ripple that the air pocket occurring in the operating period by screw propeller 120 produces is propagated along all directions, some spherical pressure ripples collide on air layer to be reflected to the outside of air layer.Backward wave with meet to offset towards the incident wave of air layer incident/reduce incident wave.In said process, the fluctuation of pressure that passes to hull 110 from air layer outside reduces.Therefore, disturbance force reduces, and makes naturally to reduce to pass to the vibration of hull 110.
According to the present embodiment, can prevent the generation of the vibration in hull 110 in the time causing disturbance force to increase due to the fluctuation of pressure producing in the operating period of screw propeller 120.
Therefore,, when boats and ships are to need peace and quiet mobilely during for the pleasure boat of travelling or warship, can suitably solve the problem of the vibration that comprises noise producing in boats and ships.
Particularly, the structure of the present embodiment can increase thrust, this be because, be similar to traditional technology, the size of screw propeller 120 can increase greatly, for example, design in a different manner shape or the size of the alar part of screw propeller, improve the shape of the stern of boats and ships, connect independent strenthening member to suppress noise and vibration, connect guiding device to guide the current from the fore of boats and ships, or reduce the sidepiece of screw propeller, for effectively solving noise and vibration problems by reducing various conventional losses.
Figure 10 A is the schematic rear structure view that disturbance force according to another embodiment of the invention reduces formula boats and ships.Figure 10 B is modified example.
In the present embodiment, a pair of screw propeller 220 is arranged in the hull 210 of boats and ships.In boats and ships, disturbance force reduces module 240 and can be arranged in the position of a side that is displaced to line of centers C/L and form air layer on the surface of hull 210, thereby prevents the generation of the vibration in hull 210.
Figure 11 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region.In the present embodiment, be arranged on disturbance force that structure that disturbance force reduces the pressurized air flow line 343 in module 340 is different from above-described embodiment and reduce the structure of the pressurized air flow line of module 140.
In other words, in the pressurized air flow line 343 of the present embodiment, for guiding compressed-air actuated arc formula guide part 343c to be further arranged between linearity range part 343a and traversing section part 343b.
Arc formula guide part 343c guiding pressurized air is easily sprayed by bubble squit hole 341a in the situation that there is no eddy current, thereby forms bubble layer.
Although in the present embodiment; arc formula guide part 343c forms by the part between linearity range part 343a and traversing section part 343b is processed into arc; alternatively; independent structure can be arranged in the part between linearity range part 343a and traversing section part 343b with guiding pressurized air, and this belongs to the protection domain that the present invention is correct.
Figure 12 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region.In the present embodiment, multiple pressurized air flow lines 443 are arranged on independently disturbance force and reduce in module 440.In this case, can bubble squit hole 441a be set with the quantity identical with the quantity of pressurized air flow line 443.Therefore,, due to above structure, can increase the efficiency of Bubble formation or the quantity of Bubble formation.
Figure 13 is the cross-sectional structure view that disturbance force according to another embodiment of the invention reduces disturbance force in formula boats and ships and reduce module region.The structure of embodiment shown in structure and Fig. 1 of the present embodiment is roughly the same, except perforated lid 580 is further arranged in the region of bubble squit hole 541a that disturbance force reduces module 540.Perforated lid 580 can be the disk-shaped structure that is formed with multiple through holes 581, as shown in the amplification circle part in Figure 13.
In the time that application has the perforated lid 580 of through hole 581, pressurized air accelerates when by through hole 581, and air is fine broken simultaneously, makes to produce a large amount of tiny bubbles.In addition, can prevent that floating marine particle from invading disturbance force and reducing in module 540.
Therefore, when on the outer surface that has the detachable connection part 582 of groove shape and be arranged on perforated lid 580, detachable connection part 582 inserts protrusion (not shown) wherein and can be formed on disturbance force and reduce the corresponding side of module 540.
In addition, reverse situation is also fully feasible.In other words,, in the time that protrusion is formed on the outer surface of perforated lid 580, groove is formed on disturbance force and reduces in module 540, and perforated lid 580 can easily be inserted in described groove.
In addition, no matter above condition, perforated lid 580 can be connected to disturbance force with screw method and reduce module 540.
Figure 14 and Figure 15 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the pipeline opening/closing module 680 of module 640.With reference to Figure 14 and Figure 15, the disturbance force that reduces formula boats and ships according to the disturbance force of the present embodiment reduces module 640 and may further include pipeline opening/closing module 680.Pipeline opening/closing module 680 is arranged on the pressurized air flow line 643 that disturbance force reduces module 640 and the opening of opening/closing pressurized air flow line 643 optionally.
In the time reducing the pressurized air flow line 643 of module 640 by disturbance force and carry out compressed-air actuated supply and be interrupted, may invade in hull 110 by pressurized air flow line 643 such as floating particle or the exterior materials that invests the crustacean of hull bottom.In order to prevent that foreign object from invading, disturbance force reduces the opening of pressurized air flow line 643 of module 640 by opening/closing suitably.For this reason, pipeline opening/closing module 680 can be set.
Pipeline opening/closing module 680 is in the time supplying pressurized air by pressurized air flow line 643, to open the non-power pipeline opening/closing module that pressurized air flow line 643 is worked as compressed-air actuated supply closes compression Air Flow pipeline 643 while being interrupted.Alternatively, can be by using the opening/closing that can remote operated electronics can control module control disturbance force reduces the pressurized air flow line 643 of module 640.But in this case, the structure of pipeline opening/closing module 680 is complicated, and cost may increase.Therefore,, as in the present embodiment, can adopt non-power pipeline opening/closing module 680.But the protection domain that the present invention is correct is not limited to this.
In the present embodiment, non-power pipeline opening/closing module 680 can comprise spherical chamber 681, spherical component 682, the first elastic component 683 and elastic component support portion 684.Spherical chamber 681 is the separate space that are arranged on individually on pressurized air flow line 643.Spherical chamber 681 is arranged on pressurized air flow line 643 and forms spherical component 682 is contained in to space wherein.Described space comprises the part compared with the width of the downstream part in the mobile direction of pressurized air with relatively little width.At length, the width that spherical chamber 681 can have a spherical chamber 681 wherein reduces then to increase gradually (in the mobile direction of pressurized air) to have the structure of the width identical with the width of pressurized air flow line 643 along pressurized air flow line 643.But the protection domain that the present invention is correct is not limited to this.
Elastic component support portion 684 with the inner wall surface from pressurized air flow line 643 in the radial direction inwardly outstanding mode form, thereby restriction the first elastic component 683 departs from from spherical chamber 681.
Reduce in the operation of module 640 at the disturbance force that structure forms as mentioned above, in the time that compressor 172 operates and supply pressurized air by pressurized air supply line 173, pressurized air flows and is ejected by bubble squit hole 141a under water along pressurized air supply line 173.
Therefore,, in the time of supply pressurized air, the opening of pressurized air supply line 173 is opened by non-power pipeline opening/closing module 680.In other words, in the time that compressor 172 operates and supply pressurized air by pressurized air supply line 173, spherical component 682 is pushed by the compressed-air actuated power being supplied, and therefore the first elastic component 683 is compressed.Then, because for the intercommunicating pore H being communicated with between pressurized air flow line 643 and spherical chamber 681 distance that spherical component 682 moves that is opened, therefore pressurized air is supplied by described space and is ejected under water by bubble squit hole 141a.
Therefore,, in the time that pressurized air is forced ejection under water, the pressurized air of ejection forms bubble, on the surface of hull 110, forms air layer.The generation of the vibration therefore, can prevent from causing disturbance force to increase due to the fluctuation of pressure producing in the operating period of screw propeller 120 time in hull 110.
Figure 16 and Figure 17 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the non-power pipeline opening/closing module 780 of module 740.With reference to Figure 16 and Figure 17, be arranged on and reduce according to the disturbance force of the present embodiment the non-power pipeline opening/closing module 780 that disturbance force in formula boats and ships reduces module 740 and comprise pipeline opening/closing plate 781 and the second elastic component 782, wherein said pipeline opening/closing plate 781 is rotatably arranged in pressurized air flow line 743 and opening/closing pressurized air flow line 743 optionally, and described the second elastic component 782 is connected to pipeline opening/closing plate 781 and makes pipeline opening/closing plate 781 turn back to fexible bias pressure in the direction of initial position.
Although Figure 16 and Figure 17 show pipeline opening/closing plate 781 and appear as bar type structure, pipeline opening/closing plate 781 is the tray type structure that is similar to the cross sectional shape of pressurized air flow line 743.
The retainer 784 that is used for the pivotable that limits pipeline opening/closing plate 781 is arranged on the wall of pressurized air flow line 743, makes pipeline opening/closing plate 781 to turn back to initial position by the elastic force of the second elastic component 782.
In the operation of the non-power pipeline opening/closing module 780 that structure forms as mentioned above, in the time of supply pressurized air, the opening of pressurized air supply line 173 is opened by non-power pipeline opening/closing module 780.In other words,, in the time supplying pressurized air by pressurized air supply line 173, pipeline opening/closing plate 781 is rotated down around the rotation axis center of hinge 783 by the compressed-air actuated power of supplying, thereby opens pressurized air supply line 173.Therefore,, in the time that pressurized air is supplied by described space, bubble can be ejected under water by bubble squit hole 141a.
But, in the time that compressed-air actuated supply is interrupted, promote and the power of rotating pipeline opening/closing plate 781 is removed, therefore the second compressed elastic component 782 expands and returns.Therefore, pipeline opening/closing plate 781 is returned to initial position with closes compression Air Flow pipeline 743 as shown in figure 16.Therefore, can effectively prevent from invading in hull 110 by pressurized air flow line 743 such as floating particle or the foreign object that invests the crustacean of hull bottom.
Figure 18 and Figure 19 are the views that diagram is applied to disturbance force that disturbance force according to another embodiment of the invention reduces formula boats and ships and reduces the operation of the non-power pipeline opening/closing module 880 of module 840.With reference to Figure 18 and Figure 19, except in the non-power pipeline opening/closing module 880 of the present embodiment, bubble squit hole 141a according to be formed on protrusion 141 end bubble squit hole 141a outside compressed-air actuated supply and outside opening/closing, be arranged on the non-power pipeline opening/closing module 880 that reduces non-power pipeline opening/closing module 880 that disturbance force in formula boats and ships reduces module 840 and be almost similar to Figure 16 and Figure 17 according to the disturbance force of the present embodiment.
In other words, the non-power pipeline opening/closing module 880 of the present embodiment comprise opening/closing bubble squit hole 141a pipeline opening/closing plate 881, form pipeline opening/closing plate 881 rotation axis center hinge 882 and be connected to pipeline opening/closing plate 881 and the elastic component 883 that makes pipeline opening/closing plate 881 turn back to the elastic force of initial position be provided.Be different from the above embodiment of Figure 16 and Figure 17, in the time that the diameter of pipeline opening/closing plate 881 is greater than the diameter of bubble squit hole 141a, do not need the retainer 284 of Figure 16 and Figure 17.
In the operation of the non-power pipeline opening/closing module 880 that structure forms as mentioned above, in the time of supply pressurized air, the opening of pressurized air supply line 173 is opened by non-power pipeline opening/closing module 880, as shown in figure 19.In other words, in the time supplying pressurized air by pressurized air supply line 173, pipeline opening/closing plate 881 is the rotation axis central rotation around hinge 882 by compressed-air actuated power, bubble squit hole 141a is opened and bubble can be ejected under water.
But, in the time that compressed-air actuated supply is interrupted, promote and the power of rotating pipeline opening/closing plate 881 is removed, therefore compressed elastic component 883 expands and goes back.Therefore, pipeline opening/closing plate 881 is returned to initial position to close as shown in figure 18 bubble squit hole 141a.Therefore, can effectively prevent from invading in hull 110 by bubble squit hole 141a such as floating particle or the foreign object that invests the crustacean of hull bottom.
It should be understood that and only in the meaning of explanation rather than in order to limit object, consider the exemplary embodiments described here.Feature in each embodiment or the description of aspect should be considered to can be used for other similar characteristics or the aspect in other embodiment conventionally.
Although described one or more embodiment of the present invention with reference to the accompanying drawings, those of ordinary skills should be understood that in the case of not deviating from the spirit being defined by the claims of the present invention and protection domain can carry out various changes in form and details to embodiment.
Industrial applicability
The present invention can be applied to boats and ships.
Claims (19)
1. disturbance force reduces formula boats and ships, comprising:
Hull, described hull has the screw propeller that is arranged on stern place;
Disturbance force reduces module, and described disturbance force reduces module and forms on the surface of the hull adjacent with screw propeller by the operating period at screw propeller and produce the air layer of backward wave and reduce the disturbance force towards hull,
Wherein disturbance force reduce module be arranged to respect in the vertical direction of hull through the line of centers of the rotation axis of screw propeller towards offseting to one side.
2. disturbance force according to claim 1 reduces formula boats and ships, wherein reduces by disturbance force the air layer that module forms and is formed in the surperficial subregion of the hull adjacent with screw propeller.
3. disturbance force according to claim 1 reduces formula boats and ships, wherein disturbance force reduce module be arranged to respect to line of centers in the direction of screw propeller rotation towards offseting to one side.
4. disturbance force according to claim 1 reduces formula boats and ships, and wherein disturbance force reduces module by spraying air and form air layer on the surface of hull to the direction of stern at the fore from hull.
5. disturbance force according to claim 1 reduces formula boats and ships, wherein disturbance force reduces module and comprises and be connected to the wall of hull and from the outstanding protrusion of the outside face of hull, and disturbance force reduces module by forming air layer on the surface via being formed on that bubble squit hole in protrusion produces bubble on the outside face of hull and at hull.
6. disturbance force according to claim 5 reduces formula boats and ships, also comprises perforated lid, and described perforated lid is connected to the region of bubble squit hole.
7. disturbance force according to claim 1 reduces formula boats and ships, also comprises bottom plug, and described bottom plug is connected to the wall of hull, and disturbance force reduces module and can dismantle and be connected to described bottom plug; With
For being supplied to disturbance force to reduce the pressurized air supply department of module pressurized air.
8. disturbance force according to claim 7 reduces formula boats and ships, and wherein pressurized air supply department comprises:
Be arranged on the compressor of a side of hull;
Reduce the pressurized air supply line of module for directly connecting compressor and disturbance force; With
At least one valve, described at least one valve is arranged on pressurized air supply line and regulates flow along pressurized air supply line compressed-air actuated to flow.
9. disturbance force according to claim 7 reduces formula boats and ships, and wherein disturbance force reduces module and comprises:
Module body, described module body comprises the pressurized air flow line being formed in module body, the pressurized air of being supplied by pressurized air supply department flows through described pressurized air flow line, what module body was filled in by insertion bottom runs through the portion of running through that is connected to bottom plug in portion, and comprises the described protrusion of a side that is formed on module body; With
Body flange, described body flange is formed on the opposite side of module body and is arranged on the supporting base of bottom plug.
10. disturbance force according to claim 9 reduces formula boats and ships, and wherein protrusion comprises:
Inclined wall portion, described inclined wall portion is connected to a side of module body to tilt; With
Vertical wall portion, described vertical wall portion is arranged vertically towards the surface of module body from the end of inclined wall portion.
11. disturbance forcies according to claim 9 reduce formula boats and ships, and wherein pressurized air flow line comprises:
Linearity range part, described linearity range part is extended along the longitudinal direction of module body; With
Traversing section part, the inner side that described traversing section part is arranged in protrusion is to cross linearity range part and to comprise the bubble squit hole of the end that is formed on traversing section part.
12. disturbance forcies according to claim 11 reduce formula boats and ships, wherein between linearity range part and traversing section part, are also provided for guiding compressed-air actuated arc formula guide part.
13. disturbance forcies according to claim 11 reduce formula boats and ships, and wherein linearity range part and traversing section part are set to multiple independently.
14. disturbance forcies according to claim 1 reduce formula boats and ships, also comprise:
Fluctuation of pressure detecting unit, described fluctuation of pressure detecting unit is arranged on hull and detects the fluctuation of pressure producing in the operating period of screw propeller; With
Controller, described controller is for reducing by disturbance force the Bubble formation that module is carried out according to the information control of exporting from fluctuation of pressure detecting unit.
15. disturbance forcies according to claim 9 reduce formula boats and ships, also comprise pipeline opening/closing module, described pipeline opening/closing module is arranged on the pressurized air flow line that disturbance force reduces module and the opening of opening/closing pressurized air flow line optionally.
16. disturbance forcies according to claim 15 reduce formula boats and ships, wherein pipeline opening/closing module is non-power pipeline opening/closing module, when by pressurized air flow line supply pressurized air, described non-power pipeline opening/closing module is opened pressurized air flow line, and in the time of compressed-air actuated supply failure, described non-power pipeline opening/closing module closes compression Air Flow pipeline.
17. disturbance forcies according to claim 16 reduce formula boats and ships, and wherein non-power pipeline opening/closing module comprises:
Spherical component, described spherical component is arranged in pressurized air flow line and opening/closing pressurized air flow line; With
The first elastic component, described the first elastic component is connected to spherical component, and in the time of supply pressurized air, described the first elastic component is compressed to allow spherical component to open pressurized air flow line, and in the time of compressed-air actuated supply failure, described the first elastic component expands to allow spherical component closes compression Air Flow pipeline.
18. disturbance forcies according to claim 17 reduce formula boats and ships, and wherein non-power pipeline opening/closing module also comprises:
Spherical chamber, described spherical chamber is arranged on pressurized air flow line and forms the space that holds spherical component, and described space comprises the part compared with the width of the downstream portion in the mobile direction of pressurized air with relatively little width, and
Elastic component support portion, described elastic component support portion is arranged in spherical chamber and supports the first elastic component.
19. disturbance forcies according to claim 16 reduce formula boats and ships, and wherein non-power pipeline opening/closing module comprises:
Pipeline opening/closing plate, described pipeline opening/closing plate can be arranged in pressurized air flow line and opening/closing pressurized air flow line optionally rotatably;
The second elastic component, described the second elastic component is connected to pipeline opening/closing plate and that pipeline opening/closing plate is turned back in the direction of initial position is resiliently biased; With
Retainer, described retainer is arranged on the wall body of pressurized air flow line and limits the pivotable of pipeline opening/closing plate.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0102691 | 2011-10-07 | ||
| KR1020110102691A KR20130038054A (en) | 2011-10-07 | 2011-10-07 | Ship |
| KR1020120002744A KR101399961B1 (en) | 2012-01-10 | 2012-01-10 | A ship |
| KR1020120002743A KR101334332B1 (en) | 2012-01-10 | 2012-01-10 | A ship |
| KR10-2012-0002743 | 2012-01-10 | ||
| KR10-2012-0002744 | 2012-01-10 | ||
| KR10-2012-0111227 | 2012-10-08 | ||
| PCT/KR2012/008136 WO2013051915A1 (en) | 2011-10-07 | 2012-10-08 | Excitation force reducing type ship |
| KR1020120111227A KR20140045104A (en) | 2012-10-08 | 2012-10-08 | A ship for reducing vibromotive force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103842246A true CN103842246A (en) | 2014-06-04 |
Family
ID=48043955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280048877.7A Pending CN103842246A (en) | 2011-10-07 | 2012-10-08 | Excitation force reducing type ship |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140230715A1 (en) |
| JP (1) | JP2014526421A (en) |
| CN (1) | CN103842246A (en) |
| WO (1) | WO2013051915A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109229278A (en) * | 2018-09-27 | 2019-01-18 | 广船国际有限公司 | A kind of vibration reduction of ship structure and ship |
| CN115195979A (en) * | 2022-07-21 | 2022-10-18 | 江苏科技大学 | Modularized magnetic coupling electric pod propeller |
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|---|---|---|---|---|
| CN106458307B (en) * | 2014-05-02 | 2019-01-04 | 三星重工业株式会社 | For reducing the ship of exciting force caused by propeller cavitation |
| JP6509774B2 (en) * | 2016-04-27 | 2019-05-08 | 双葉電子工業株式会社 | Communication system, transmitter, receiver and communication method |
| KR101884534B1 (en) * | 2016-12-19 | 2018-08-01 | 한국해양과학기술원 | A hull pressure fluctuation reduction method for a ship with twin propellers using propeller rotation angle control |
| KR101879515B1 (en) * | 2016-12-19 | 2018-07-18 | 한국해양과학기술원 | A hull pressure fluctuation reduction method for a ship with twin propellers using real-time vibration information and propeller rotation angle control |
| US12263914B2 (en) * | 2022-11-22 | 2025-04-01 | Airglide, AI. Inc | System and method for delivering air to a submerged ship surface |
| CN118953647B (en) * | 2024-10-17 | 2024-12-31 | 江苏智慧工场技术研究院有限公司 | Ship propeller rudder combined vortex-eliminating energy-saving device and installation method |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013051915A1 (en) | 2013-04-11 |
| JP2014526421A (en) | 2014-10-06 |
| US20140230715A1 (en) | 2014-08-21 |
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Application publication date: 20140604 |