CN110435817A - A kind of sharp oise damping means of underwater bossy body stream - Google Patents
A kind of sharp oise damping means of underwater bossy body stream Download PDFInfo
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- CN110435817A CN110435817A CN201910653159.6A CN201910653159A CN110435817A CN 110435817 A CN110435817 A CN 110435817A CN 201910653159 A CN201910653159 A CN 201910653159A CN 110435817 A CN110435817 A CN 110435817A
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- bossy body
- vibration
- valve
- sap cavity
- hydraulic pump
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- 238000013016 damping Methods 0.000 title claims abstract description 13
- 238000001228 spectrum Methods 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003534 oscillatory effect Effects 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 8
- 230000005284 excitation Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000010349 pulsation Effects 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention provides a kind of sharp oise damping means of underwater bossy body stream, including sap cavity, vibration/pulsating force monitoring sensor, control cabinet and hydraulic pump/valve；The sap cavity is spirally mounted on bossy body surface, and what sap cavity was not installed on bossy body surface is partially covered with rubber, makes sap cavity in non-filling liquid, bossy body surface is streamlined；The vibration/pulsating force monitoring sensor is mounted on the bossy body, the control cabinet is connected with the vibration/pulsating force monitoring sensor and hydraulic pump/valve, the sap cavity is connected with the hydraulic pump/valve, the control cabinet controls hydraulic pump/valve charge and discharge liquid into sap cavity according to vibration/pulsating force monitoring sensor monitoring result.The device can realize the active control that line spectrum noise is swashed to underwater bossy body stream.
Description
Technical field
The invention belongs to Control Technique of Vibration and Noise fields, and in particular to a kind of sharp noise control dress of underwater bossy body stream
It sets.
Background technique
There are miscellaneous bossy bodies on underwater sailing body surface, since fluid motivates when navigating by water under water, cause to tie
Structure vibration, it is likely that will appear line spectrum noise, seriously affect its concealment.Bossy body stream swashs the control of line spectrum noise, although can
Change some passive measures such as line style, increase partition to take, but control effect is not generally significant, or due to control measure
It may cause high-frequency noise under the high speed of a ship or plane to increase.
Letting out under the whirlpool of bossy body rear is the root for leading to flow sharp line spectrum noise, and fluid media (medium) is flowing through bossy body structure
Afterwards, under certain Reynolds number, bossy body wake flow can be alternately present Shedding Vortex, these vortex streets cause the pulsating pressure on bossy body surface
Power, to generate noise.Simultaneously as bossy body vortex shedding frequency and structural natural frequencies are close, excitation result is in intrinsic frequency
It is vibrated under rate, strong line spectrum noise but will be generated.Bossy body stream swashs noise and contains vortex periodic excitation, fluid and structure and makes an uproar
The fluid structurecouplings such as the interaction between sound, stream acoustical coupling complicated phenomenon.But no matter which kind of acoustic mechanism, driving source is all
It is the vortex excitation at bossy body edge.Therefore, in order to which bossy body stream swashs line spectrum noise, key is to realize to bossy body vortex
Control.
Based on turbulent flow macrosystem, there is this theoretical backgrounds of the sensibility to microvariations, are generated using liquid-filled device
Microvariations are coupled with bossy body Flow Around, to significantly change the flow regime of bossy body, may be implemented to flow macroscopic view
Active control.Bossy body edge is to form the source periodically flowed, and the position is very sensitive to fluid small sample perturbations are received.Base
In this, small velocity disturbance is introduced at bossy body edge, dynamic to vortex can be controlled, and then the periodicity being vortexed is de-
It falls, 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 bossy body stream swash line spectrum noise actively
The report of control.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of underwater bossy body streams to swash oise damping means, which can
Realize the active control that line spectrum noise is swashed to underwater bossy body stream.
Realize that technical scheme is as follows:
A kind of sharp oise damping means of underwater bossy body stream, including sap cavity, vibration/pulsating force monitor sensor, control cabinet
And hydraulic pump/valve；The sap cavity is spirally mounted on bossy body surface, and what sap cavity was not installed on bossy body surface is partially covered with rubber
Glue makes sap cavity in non-filling liquid, and bossy body surface is streamlined；The vibration/pulsating force monitoring sensor is mounted on described convex
Out on body, the control cabinet is connected with the vibration/pulsating force monitoring sensor and hydraulic pump/valve, the sap cavity and the liquid
Pump/valve is pressed to be connected, the control cabinet controls hydraulic pump/valve to sap cavity according to vibration/pulsating force monitoring sensor monitoring result
Interior charge and discharge liquid.
It further, is the liquid such as hydraulic oil/water inside sap cavity of the present invention, crust is with certain extensibility and to resist
The rubber skin of pressure property, rubber skin maximum energy elongation is more than 500%, and it is more than 4.5MPa that maximum, which bears pressure,.
Further, vibration of the present invention/pulsating force monitoring sensor is dry end vibrating sensor or green end pulsating pressure
Force snesor, when for dry end vibrating sensor, the inner surface of installation bossy body under water, when for green end oscillatory pressure pick-up
When, installation is under water on the reserved mounting hole in bossy body outer surface；For real-time monitoring stream swash fluctuation pressure that attached body generates or
Person vibrates line spectrum, and feeds back to control cabinet, and control cabinet adjusts control plan according to the input of vibration/pulsating force monitoring sensor in real time
Slightly.
Further, control cabinet of the present invention is the maincenter of entire control system, according to vibration/pulsating force monitoring sensing
The data of device acquisition, carry out real-time judge, start hydraulic pump/valve if having low frequency spectrum lines generation, carry out filling liquid, when pulsation line spectrum
When disappearance, then stop filling liquid；The intracavitary liquid of Extract if high-frequency noise increases guarantees to flow and swashs noise in low frequency and medium-high frequency
It is in reduced levels.
Further, hydraulic pump/valve of the present invention is low noise intelligence pump/valve, open state and flow rates controlled system
Case control, hydraulic pump/valve use the vibration isolation of double-layer vibration isolating device, and when unlatching will not generate strong mechanical noise.
Beneficial effect
The underwater bossy body stream of the present invention swashs oise damping means, and structure type is simple, and movement parts are few, high reliablity, and
The control of low frequency spectrum lines and dither can be taken into account.When device does not work, additional noise will not be attracted.In deepwater high-pressure environment
In also can guarantee ability to work.
Detailed description of the invention
Fig. 1 is the mechanism figure that stream swashs that protrusion bulk noise generates；
Fig. 2 is that the present invention upsets the mechanism figure of fluid excitation；
Fig. 3 is the schematic diagram of apparatus of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.
The mechanism that bossy body stream swashs line spectrum noise is as follows: fluid media (medium) is after flowing through bossy body structure, in certain Reynolds number
Under, bossy body wake flow can be alternately present Shedding Vortex, these vortex streets cause the fluctuation pressure on bossy body surface, so that noise is generated,
As shown in Figure 1.Simultaneously as bossy body vortex shedding frequency and structural natural frequencies are close, excitation result is shaken under intrinsic frequency
It is dynamic, strong line spectrum noise but will be generated, to give off stronger noise.Therefore, as long as the week of bossy body edge formation can be upset
Phase property vortex can reduce bossy body stream from source and swash line spectrum noise.
A kind of underwater bossy body stream of the embodiment of the present invention swashs line spectrum oise damping means, and being primarily adapted for use in reduces bossy body stream
Swash caused low frequency spectrum lines noise, while the raising of high-frequency noise will not be caused in high speed；As Figure 2-3, including sap cavity
1, vibration/pulsating force monitoring sensor 2, control cabinet 3 and hydraulic pump/valve 4；The sap cavity 1 is spirally mounted on bossy body surface,
What sap cavity 1 was not installed on bossy body surface is partially covered with rubber, makes sap cavity 1 in non-filling liquid, bossy body surface be it is streamlined, because
When this does not work, the line style fairing of bossy body surface will not cause additional noise；The vibration/pulsating force monitoring sensor 2 is pacified
On the bossy body, the control cabinet 3 is connected with the vibration/pulsating force monitoring sensor 2 and hydraulic pump/valve 4, described
Sap cavity 1 is connected with the hydraulic pump/valve 4, and the control cabinet 3 is according to vibration/pulsating force monitoring sensor 2 monitoring result, control
Make the hydraulic charge and discharge liquid into sap cavity of pump/valve 4.
Mechanism of noise generation is swashed according to bossy body structure stream, helically line form is mounted on attached body surface face to described device, and
Along direction of flow tight between device leading edge and rear.The generation for swashing the strong line spectrum of noise is flowed, mainly since fluid motivates
Periodical same-phase frequency of oscillation and the close generation of structural natural frequencies.When the sharp strong line spectrum of noise of stream generates, neighbouring flow field is inevitable
Periodical same-phase oscillating characteristic is showed, dry end vibrating sensor/green end oscillatory pressure pick-up detects periodicity at this time
This phenomenon is fed back to control cabinet by vibration/pulsation phenomenon, sensor, and control cabinet judgement need to eliminate low-frequency flow and swash line spectrum, open
Hydraulic pump/valve makes sap cavity filling liquid, until sensing data shows that low frequency spectrum lines are reduced or disappeared.If as the speed of a ship or plane increases, device
Cause flow field dither abnormal, sensor high-frequency data is higher, then Extract intracavity liquid, reduces dither.Entire dress
The Controlling principle set is to reduce high-frequency noise as far as possible under the premise of controlling low frequency spectrum lines.
It is the liquid such as hydraulic oil/water inside sap cavity of the embodiment of the present invention 1, crust is with certain extensibility and crushing resistance
Rubber skin, rubber skin maximum energy elongation are more than 500%, and it is more than 4.5MPa that maximum, which bears pressure,.
Vibration of the embodiment of the present invention/pulsating force monitoring sensor 2 is that dry end vibrating sensor or green end fluctuation pressure sense
Device installs the inner surface of bossy body under water when for dry end vibrating sensor, when for green end oscillatory pressure pick-up, peace
On the mounting hole reserved mounted in underwater protrusion external surface；The fluctuation pressure or vibration that attached body generates are swashed for real-time monitoring stream
Line spectrum, and control cabinet is fed back to, control cabinet adjusts control strategy according to the input of vibration/pulsating force monitoring sensor in real time.
Control cabinet of the embodiment of the present invention 3 is the maincenter of entire control system, according to vibration/pulsating force monitoring sensor acquisition
Data, carry out real-time judge, start hydraulic pump/valve if having low frequency spectrum lines generation, carry out filling liquid, when pulsation line spectrum disappears
When, then stop filling liquid；The intracavitary liquid of Extract if high-frequency noise increases guarantees that flow sharp noise locates in low frequency and medium-high frequency
In reduced levels.
The hydraulic pump/valve 4 of the embodiment of the present invention be low noise intelligence pump/valve, open state and flow rates controlled case control,
Hydraulic pump/valve uses the vibration isolation of double-layer vibration isolating device, and when unlatching will not generate strong mechanical noise.
The underwater bossy body stream of the embodiment of the present invention swashs the course of work of line spectrum oise damping means are as follows:
When submarine navigation device navigates by water under water, vibration/pulsating force monitoring sensor 2 can real-time monitoring structural vibration/flow field
Fluctuation pressure information, when occurring low frequency spectrum lines in monitoring data, this phenomenon is fed back to control cabinet 3, control cabinet by sensor 2
3 determine that need to eliminate low-frequency flow swashs line spectrum, opens hydraulic pump/valve 4, makes 1 filling liquid of sap cavity.After 1 filling liquid of sap cavity, the periodicity in flow field is same
Phase ripple power will be interfered, so that flow field pulsation line spectrum noise be made to disappear, monitor 2 data of sensor in vibration/pulsating force
When real-time display goes out the disappearance of flow field pulse line spectrum, hydraulic pump/valve 4 is closed, sap cavity 1 stops filling liquid.If as the speed of a ship or plane increases, device
Cause flow field dither abnormal, 2 high-frequency data of sensor is higher, then hydraulic pump/valve 4 is opened in the control of control cabinet 3, extracts sap cavity out
Liquid in 1 reduces dither.The Controlling principle of whole device is to reduce high frequency as far as possible under the premise of controlling low frequency spectrum lines
Noise.
The underwater bossy body stream of the embodiment of the present invention swashs the specific assembling steps of the liquid-filled active control device of line spectrum noise such as
Under:
A) vibrating sensor 2 is mounted on inside bossy body, oscillatory pressure pick-up 2 is mounted on what bossy body surface was reserved
In aperture, bossy body line style is not changed；
B) vibration/pulsating force monitoring sensor 2 is connected to 3 on the control cabinet in cabin by data line；
C) control cabinet is connected by control line and hydraulic pump/valve 4, and hydraulic pump/valve 4 can control to open and close；
D) spiral shape sap cavity 1 is mounted on bossy body surface, meanwhile, bossy body surface is covered on not using the rubber of not filling liquid
On the position for installing sap cavity, when guaranteeing that device does not work, the line style fairing of bossy body surface；
E) hydraulic pump/valve 4 is connected by tubule with external sap cavity 1, installs shut-off valve, guarantees outside seawater when device is impaired
It will not pour into cabin.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of underwater bossy body stream swashs oise damping means, which is characterized in that passed including sap cavity (1), vibration/pulsating force monitoring
Sensor (2), control cabinet (3) and hydraulic pump/valve (4)；The sap cavity (1) is spirally mounted on bossy body surface, bossy body surface
That does not install sap cavity (1) is partially covered with rubber, makes sap cavity (1) in non-filling liquid, and bossy body surface is streamlined；The vibration
Dynamic/pulsating force monitoring sensor (2) is mounted on the bossy body, and the control cabinet (3) and the vibration/pulsating force monitoring pass
Sensor (2) and hydraulic pump/valve (4) are connected, and the sap cavity (1) is connected with the hydraulic pump/valve (4), control cabinet (3) basis
Vibration/pulsating force monitoring sensor (2) monitoring result, controls hydraulic pump/valve (4) charge and discharge liquid into sap cavity.
2. underwater bossy body stream swashs oise damping means according to claim 1, which is characterized in that sap cavity (1) crust
For rubber skin, rubber skin maximum energy elongation is more than 500%, and it is more than 4.5MPa that maximum, which bears pressure,.
3. underwater bossy body stream swashs oise damping means according to claim 1, which is characterized in that the vibration/pulsating force
Monitoring sensor (2) is that dry end vibrating sensor or green end oscillatory pressure pick-up are mounted on when for dry end vibrating sensor
The inner surface of underwater bossy body, when for green end oscillatory pressure pick-up, the installation reserved installation in bossy body outer surface under water
Kong Shang；The fluctuation pressure or vibration line spectrum that attached body generates are swashed for real-time monitoring stream, and feed back to control cabinet.
4. underwater bossy body stream swashs oise damping means according to claim 1, which is characterized in that control cabinet (3) root
According to the data of vibration/pulsating force monitoring sensor acquisition, carry out real-time judge, start if having low frequency spectrum lines generation hydraulic pump/
Valve carries out filling liquid, when line spectrum of pulsing disappears, then stops filling liquid；The intracavitary liquid of Extract if high-frequency noise increases.
5. underwater bossy body stream swashs oise damping means according to claim 1, which is characterized in that the hydraulic pump/valve (4)
For low noise intelligence pump/valve, open state and flow rates controlled case control, hydraulic pump/valve use the vibration isolation of double-layer vibration isolating device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910653159.6A CN110435817B (en) | 2019-07-19 | 2019-07-19 | Underwater protrusion flow excitation noise control device |
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| CN201910653159.6A CN110435817B (en) | 2019-07-19 | 2019-07-19 | Underwater protrusion flow excitation noise control device |
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