CN106015202B - For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise - Google Patents
For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise Download PDFInfo
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- CN106015202B CN106015202B CN201610503284.5A CN201610503284A CN106015202B CN 106015202 B CN106015202 B CN 106015202B CN 201610503284 A CN201610503284 A CN 201610503284A CN 106015202 B CN106015202 B CN 106015202B
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- Prior art keywords
- cavity
- line spectrum
- hydraulic cylinder
- pedestal
- film
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention belongs to Control Technique of Vibration and Noise fields, more particularly to underwater noise control device.A kind of device for being used to inhibit underwater cavity stream Induced Oscillation line spectrum noise, technical solution are：When solenoid is powered, driving film makees cycle movement in fluid cylinder, the electric energy of input is converted to the kinetic energy of film movement under the action of electromagnetic force：When driving film expansion, liquid in-cylinder pressure reduces, and external fluid is inhaled into intracavitary through slit；When driving film shrunk, hydraulic pressure in-cylinder pressure increases, and fluid is discharged cavity in hydraulic cylinder.So as to generate unsteady jet stream at head cover slit.With trepanning incoming shear layer strong effect occurs for the interaction of whirlpool and shear layer generated by pulsing jet, jet stream, destroys the self sustained oscillation of shear layer, you can realizes that convection current swashs the inhibition of line spectrum noise.
Description
Technical field
The invention belongs to Control Technique of Vibration and Noise fields, more particularly to underwater noise control device.
Background technology
Underwater sailing body surface is there are trepanning, due to the excitation of turbulent shear layer when navigating by water under water, it is likely that can go out
The stream of existing cavity swashs self sustained oscillation line spectrum noise, seriously affects its concealment.The control of cavity stream Induced Oscillation line spectrum noise, although
It can take and change cavity size, increase some passive measures such as grid, but control effect is not generally notable.To find out its cause,
Be due to no matter which kind of mode, the fluid driving source of tapping still has.
The fluid self sustained oscillation of tapping cavity is the root of open flow sounding.Cavity self sustained oscillation can be divided into three kinds
Type：Fluid dynamic oscillation, fluid-acoustic resonance oscillation, fluid-elastic oscillation.The self sustained oscillation of cavity contains shear layer not
The fluid structurecouplings such as stability, the interaction between turbulent flow and structure and noise, stream acoustical coupling complicated phenomenon.But either
That cavity self sustained oscillation, driving source are along the unstable shear flow of accent.Therefore, in order to control cavity stream Induced Oscillation
Line spectrum noise, key are to realize the control to accent shear flow.
Based on turbulent flow macrosystem, there is this theoretical backgrounds of the sensibility to microvariations, are produced using microminiature driver
Raw microvariations are coupled with mainstream flowing, so as to significantly change the flow regime of mainstream, can realize the active to macroscopic view flowing
Control.Cavity leading edge is to form the source of shear flow, and the position is very sensitive to receiving fluid small sample perturbations.Based on this, in sky
Leading edge cavity introduces small velocity disturbance, shearing laminar flow can be controlled, and then destroy the self-sustained oscillation of cavity shear flow
It swings, reduces stream Induced Oscillation line spectrum noise.In recent years, in aerospace field, for air dielectric, useful tiny flow control
Device inhibit cavity stream Induced Oscillation noise research, but at present and have not seen applied to underwater cavity stream Induced Oscillation noise abatement
Report.
Invention content
The purpose of the present invention is：There is provided one kind can work under water, it is simple in structure, be easily achieved, reliability is high, installation
Fluidic device convenient, environmental suitability is strong, realizes the control that cavity line spectrum noise is swashed to underwater sailing body surface trepanning stream.
The technical scheme is that：A kind of device for being used to inhibit underwater cavity stream Induced Oscillation line spectrum noise, it includes：
Solenoid drives film, hydraulic cylinder, head cover, bottom cover, pedestal；
Solenoid is the coiled multiple times loop for being wrapped in magnetic core surface integration packaging, stretches out three feelers and is inserted into pedestal
In three apertures that lower face is reserved；
Film is driven using electrostriction material, driving film be located at pedestal inner bottom surface and with three feeler positions of solenoid
It is corresponding；
Hydraulic cylinder both ends are open, and are located at pedestal inner cavity, and hydraulic cylinder lower ending opening is connect with the edge of driving film,
Upper end opening is connected with head cover；When the solenoid is energized, three feelers generation electromagnetic forces cause driving film along hydraulic cylinder axis
Make periodical piston motion；
Head cover surface is provided with rectangular cutout, and when film is driven to make periodical piston motion, fluid is inhaled by slit
Enter or discharge, form pulsing jet；
Bottom cover is fixed on the lower face of pedestal, clasps simultaneously stationary solenoids；
Pedestal uses resin material, and film and hydraulic cylinder are driven for integration packaging.
The present invention is according to the mechanism of production of cavity stream Induced Oscillation line spectrum noise, mounted on sail body surface trepanning leading edge aperture
Place, and ensure that jet direction is vertical with shear layer flow direction at head cover slit (rectangular cutout) as possible, slit length and boat
Row body cavity transverse width dimension approaches.The control effect of cavity flow induced vibration line spectrum noise, mainly by the frequency of pulsing jet
It is determined with two parameters of speed.Jet stream frequency is the frequency that film is driven to make harmonic moving in hydraulic cylinder, according to sail body sky
The frequency of chamber flow induced vibration Noise line spectra adjusts the frequency that driving film makees harmonic moving, thus it is possible to vary jet stream at head cover slit
Frequency.Effluxvelocity makees harmonic moving displacement, hydraulic cylinder cavity size and head cover slit by driving film in hydraulic cylinder
Size codetermines, and can change effluxvelocity by changing head cover slit width.In order to reach to cavity stream Induced Oscillation line spectrum
The preferable control effect of noise should generally be such that the frequency of pulsing jet at head cover slit is approached with cavity line spectrum noise frequency, penetrate
Flow velocity degree is about shear layer speed of incoming flow 1%.At this point, the interaction of whirlpool and shear layer generated by pulsing jet, is penetrated
With trepanning incoming shear layer strong effect occurs for stream, destroys the self sustained oscillation of shear layer, you can realizes that convection current swashs line spectrum noise
Inhibition.
Advantageous effect：Size of the present invention is small, structure type is simple, and movement parts are few, and reliability is high, cheap.It is navigating by water
When body surface face is installed, it can be directly welded near trepanning, mounting means is simple and reliable, convenient for disassembly and assembly；Meanwhile construction profile size
With trepanning integrated design, ensure not destroying the line style near trepanning.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is fundamental diagram of the present invention.
Specific embodiment
It is a kind of for inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise referring to attached drawing, including：Solenoid 1, driving
Film 2, hydraulic cylinder 3, head cover 4, bottom cover 5, pedestal 6.
Solenoid 1 is the coiled multiple times loop for being wrapped in magnetic core surface integration packaging, stretches out three feelers and is inserted into base
In three apertures that 6 lower faces of seat are reserved；When solenoid 1 is powered, three feelers generate electromagnetic force and cause driving film 2 along liquid
The axial of cylinder pressure 3 makees periodical piston motion；
Driving film 2 selects common electrostriction material, and thickness is determined by required effluxvelocity size.
Hydraulic cylinder 3 is located at 6 inner cavity of pedestal, and 3 lower face of hydraulic cylinder is with driving the edge of film 2 to connect, upper end and head cover 4
It is connected, three is in connecting portion good seal；
4 surface of head cover is provided with slit, when drive film 2 make periodical piston motion when, fluid be inhaled by slit or
Discharge forms pulsing jet；
Bottom cover 5 clasps from below and stationary solenoids 1, is fixed on the lower face of pedestal 6；
Pedestal 6 uses resin material, for driving film 2 and hydraulic cylinder 3 with head cover 4 together integration packaging.
When solenoid 1 is powered, driving film 2 makees cycle movement under the action of electromagnetic force in hydraulic cylinder 3, will be defeated
The electric energy entered is converted to the kinetic energy of film movement：When film 2 is driven to expand outward, hydraulic pressure in-cylinder pressure reduces, external fluid
Intracavitary is inhaled into through slit；When driving film 2 to contract, hydraulic pressure in-cylinder pressure increases, and fluid is discharged chamber in hydraulic cylinder
Body.So as to generate unsteady jet stream at 4 slit of head cover, as shown in Figure 3.
Specific number of assembling steps of the invention is as follows：
1 three feeler of solenoid is inserted into the reserved hole of pedestal 6 by a；
B covers bottom cover 5 in 1 bottom of solenoid, and fastening is connect with pedestal 6 by screw；
C will drive film 2 to be positioned over inside pedestal 6, be inserted in cylindrical hydraulic cylinder 3；
D top covers 4 connect fastening by screw with pedestal 6；
Cavity stream vibration noise restraining device after e will be installed is welded on sail body surface trepanning edge.
Claims (4)
1. it is a kind of for inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise, it is characterized in that：It includes：Solenoid (1) drives
Dynamic film (2), hydraulic cylinder (3), head cover (4), bottom cover (5), pedestal (6)；
The solenoid (1) is the coiled multiple times loop for being wrapped in magnetic core surface integration packaging, stretches out three feelers and is inserted into
In three apertures that pedestal (6) lower face is reserved；
The driving film (2) using electrostriction material, driving film (2) positioned at pedestal (6) inner bottom surface and with the helical
It is corresponding to manage (1) three feeler position；
Hydraulic cylinder (3) both ends are open, be located at the pedestal (6) inner cavity, hydraulic cylinder (3) lower ending opening with it is described
The edge connection of film (2) is driven, upper end opening is connected with the head cover (4)；It is described when the solenoid (1) is powered
Three feelers generate electromagnetic force and the driving film (2) are caused to make periodical piston motion along the hydraulic cylinder (3) axis；
Head cover (4) surface is provided with rectangular cutout, and when the driving film (2) makees periodical piston motion, fluid leads to
It crosses the rectangular cutout to be inhaled into or discharge, forms pulsing jet；
The bottom cover (5) is fixed on the lower face of the pedestal (6), clasps and fixes the solenoid (1)；
The pedestal (6) is using resin material, for driving film (2) and the hydraulic cylinder (3) described in integration packaging.
2. it is a kind of for inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise as described in claim 1, it is characterized in that：It is described
Hydraulic cylinder (3) is using cylindrical or cuboid.
3. it is a kind of for inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise as claimed in claim 1 or 2, it is characterized in that：
By changing the width of the head cover (4) surface rectangular cutout, the speed for making pulsing jet is cavity shear layer speed of incoming flow
1%.
4. it is a kind of for inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise as claimed in claim 1 or 2, it is characterized in that：
The length of head cover (4) rectangular cutout is consistent with sail body cavity transverse width dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503284.5A CN106015202B (en) | 2016-06-30 | 2016-06-30 | For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610503284.5A CN106015202B (en) | 2016-06-30 | 2016-06-30 | For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise |
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| Publication Number | Publication Date |
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| CN106015202A CN106015202A (en) | 2016-10-12 |
| CN106015202B true CN106015202B (en) | 2018-06-22 |
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| CN201610503284.5A Expired - Fee Related CN106015202B (en) | 2016-06-30 | 2016-06-30 | For inhibiting the device of underwater cavity stream Induced Oscillation line spectrum noise |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109753681B (en) * | 2018-11-28 | 2023-09-29 | 中国船舶重工集团公司第七一九研究所 | Comprehensive forecasting method for line spectrum noise of underwater flow excitation cavity |
| CN110450930A (en) * | 2019-07-19 | 2019-11-15 | 中国船舶重工集团公司第七一九研究所 | A kind of sharp liquid-filled active control device of noise of underwater aperture stream |
| CN110435817A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of sharp oise damping means of underwater bossy body stream |
| CN113844629B (en) * | 2021-10-26 | 2023-10-20 | 中国舰船研究设计中心 | Flow excitation cavity vibration noise suppression method |
| CN115538284B (en) * | 2022-10-11 | 2023-09-12 | 高速铁路建造技术国家工程研究中心 | Flat box girder active control structure and method based on zero-mass jet flow |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534914A (en) * | 1981-12-23 | 1985-08-13 | Nihon Sanso Kabushiki Kaisha | Method and apparatus for producing vortex rings of a gas in a liquid |
| CN1570417A (en) * | 2004-05-11 | 2005-01-26 | 浙江大学 | Oil film oscillation fault on-line elimination method and apparatus |
| CN2758547Y (en) * | 2004-12-29 | 2006-02-15 | 中国科学技术大学 | Travelling-wave wall drag reducing device controlled by electric rheological valve or magnetic rheological valve |
| CN101109402A (en) * | 2006-07-19 | 2008-01-23 | 北京航空航天大学 | Rib strip-tiny bubble damping device |
| CN205918710U (en) * | 2016-06-30 | 2017-02-01 | 中国船舶重工集团公司第七一九研究所 | A device for suppressing cavity flows excitation and swings line spectrum noise under water |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6595753B1 (en) * | 1999-05-21 | 2003-07-22 | A. Vortex Holding Company | Vortex attractor |
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2016
- 2016-06-30 CN CN201610503284.5A patent/CN106015202B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534914A (en) * | 1981-12-23 | 1985-08-13 | Nihon Sanso Kabushiki Kaisha | Method and apparatus for producing vortex rings of a gas in a liquid |
| CN1570417A (en) * | 2004-05-11 | 2005-01-26 | 浙江大学 | Oil film oscillation fault on-line elimination method and apparatus |
| CN2758547Y (en) * | 2004-12-29 | 2006-02-15 | 中国科学技术大学 | Travelling-wave wall drag reducing device controlled by electric rheological valve or magnetic rheological valve |
| CN101109402A (en) * | 2006-07-19 | 2008-01-23 | 北京航空航天大学 | Rib strip-tiny bubble damping device |
| CN205918710U (en) * | 2016-06-30 | 2017-02-01 | 中国船舶重工集团公司第七一九研究所 | A device for suppressing cavity flows excitation and swings line spectrum noise under water |
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| CN106015202A (en) | 2016-10-12 |
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Granted publication date: 20180622 Termination date: 20190630 |