CN110450930A - A kind of sharp liquid-filled active control device of noise of underwater aperture stream - Google Patents
A kind of sharp liquid-filled active control device of noise of underwater aperture stream Download PDFInfo
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- CN110450930A CN110450930A CN201910653157.7A CN201910653157A CN110450930A CN 110450930 A CN110450930 A CN 110450930A CN 201910653157 A CN201910653157 A CN 201910653157A CN 110450930 A CN110450930 A CN 110450930A
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- aperture
- vibration
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- noise
- hydraulic pump
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- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000001228 spectrum Methods 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003534 oscillatory effect Effects 0.000 claims description 6
- 230000010349 pulsation Effects 0.000 claims description 6
- 210000003491 skin Anatomy 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 210000002615 epidermis Anatomy 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 description 11
- 239000012530 fluid Substances 0.000 description 7
- 230000002459 sustained effect Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/28—Arrangement of offensive or defensive equipment
- B63G8/34—Camouflage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention provides a kind of sharp liquid-filled active control device of noise of underwater aperture stream, including sap cavity, vibration/pulsating force monitoring sensor, control cabinet and hydraulic pump/valve；The sap cavity inlays the leading edge for installing aperture under water, the vibration/pulsating force monitoring sensor is installed in the aperture, 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 work underwater, and structure is simple, be easily achieved, high reliablity, easy for installation, environmental suitability is strong, it can be achieved that swashing the active control of line spectrum noise to underwater aperture stream.
Description
Technical field
The invention belongs to Control Technique of Vibration and Noise fields, and in particular to a kind of underwater sharp noise impedance device of stream.
Background technique
Submarine navigation device open cell version is exposed in flow field around, out-of-date will generate noise when fluid shearing flows through.It is logical
The shear flow for crossing vestibule can not only generate the self sustained oscillation of pressure, cause aperture pressure cycle variation nearby and generate line spectrum and make an uproar
Sound, while when coupled oscillations occur for certain mode of shear flow movement and cavity, dynamic loading but will be caused very big and aggravate line
The intensity of spectrum.Although underwater aperture noise can be controlled by using headstock gear, part open due to security consideration,
Do not allow to close.Numerical value gauging surface swashs Noise line spectra in the stream that aperture generation can be effectively suppressed in aperture leading edge setting pod,
But due to increasing water conservancy diversion closure assembly newly, it may cause high-frequency noise under the high speed of a ship or plane and increase.
The fluid self sustained oscillation of tapping cavity is the root of open flow sounding.Fluid media (medium) is after flowing through aperture, In
Under certain Reynolds number, aperture wake flow can be alternately present Shedding Vortex, the self sustained oscillation of the ever victorious pressure of meeting flows to generate noise
Body-power oscillator noise.Simultaneously as self sustained oscillation frequency and structure/cavity intrinsic frequency are close, incentive structure/cavity exists
It is vibrated under intrinsic frequency, strong line spectrum noise, i.e. fluid-cavity resonance oscillation and fluid-elastic oscillation noise but will be generated.But
It is, either which kind of cavity self sustained oscillation that driving source is along the unstable shear flow of aperture.Therefore, in order to control out
Flow Induced Oscillation line spectrum noise in hole, and key is to realize the control to aperture shear flow.
Numerical result shows to increase pod in aperture leading edge, can destroy the fluid pulsation that falls off from leading edge to
Rear is hit, to significantly change the flow regime of osseotomy site, is inhibited so that convection current swashs aperture Noise line spectra.But water conservancy diversion
The presence of cover has disturbed the flow field near aperture, and under certain speed of a ship or plane, it is excessively high to may cause high-frequency noise.Therefore it is badly in need of using
The measure of active control, takes into account low frequency spectrum lines and high-frequency noise, and convection current swashs aperture noise and controlled.In recent years, it navigates in aviation
Its field has the research of aperture stream Induced Oscillation noise impedance device for air dielectric, but at present and has not seen application
The report of line spectrum noise impedance is swashed in underwater aperture stream.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of underwater aperture streams to swash the liquid-filled active control device of noise,
The device can work underwater, and structure is simple, be easily achieved, high reliablity, easy for installation, environmental suitability is strong, can be real
The active control of line spectrum noise is now swashed to underwater aperture stream.
Realize that technical scheme is as follows:
A kind of sharp liquid-filled active control device of noise of underwater aperture stream, including sap cavity, vibration/pulsating force monitoring sensing
Device, control cabinet and hydraulic pump/valve；The sap cavity inlays the leading edge for installing aperture under water, the vibration/pulsating force monitoring sensing
Device is installed in the aperture, and the control cabinet is connected with the vibration/pulsating force monitoring sensor and hydraulic pump/valve, described
Sap cavity is connected with the hydraulic pump/valve, and the control cabinet controls liquid according to vibration/pulsating force monitoring sensor monitoring result
Press pump/valve charge and discharge liquid into sap cavity.
Further, the epidermis of sap cavity of the present invention is the rubber skin with certain extensibility and crushing resistance, rubber skin
Maximum elongation rate 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 aperture under water, when for green end oscillatory pressure pick-up
When, installation is under water on the reserved mounting hole in aperture outer surface；For real-time monitoring stream swash aperture generate fluctuation pressure or
Line spectrum is vibrated, and feeds back to control cabinet, 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 aperture stream of the present invention swashs noise impedance device, 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 ring
Also it can guarantee ability to work in border.
Detailed description of the invention
Fig. 1 is to flow to swash the mechanism figure that aperture 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, state when (a) is sap cavity non-filling liquid, (b) shape when filling liquid non-for sap cavity
State；
Fig. 4 is that aperture increases fluctuation pressure comparison before and after filling liquid sap cavity (being equivalent to pod).
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 aperture stream swashs line spectrum noise is as follows: it is de- to generate whirlpool in aperture leading edge after flowing through aperture for fluid media (medium)
It falls, aperture rear is hit with fluid motion in the whirlpool to fall off from leading edge, to generate the feedback effect of a pressure, this pressure
Feedback will affect up-front vortex shedding, under certain Reynolds number, can aggravate up-front vortex shedding, further hit aperture rear,
To generate periodic noise, as shown in Figure 1.Simultaneously as self sustained oscillation frequency and structure/cavity intrinsic frequency are close, swash
It encourages structure/cavity to vibrate under intrinsic frequency, strong line spectrum noise but will be generated, to give off stronger noise.Therefore, as long as
The periodic swinging of tapping formation can be upset, aperture stream can be reduced from source and swashs line spectrum noise.
A kind of underwater aperture stream of the embodiment of the present invention swashs the liquid-filled active control device of noise, it is primarily adapted for use in reduction stream
Swash low frequency spectrum lines noise caused by aperture, while the raising of high-frequency noise will not be caused in high speed, as shown in figure 3, including liquid
Chamber 1, vibration/pulsating force monitoring sensor 2, control cabinet 3 and hydraulic pump/valve 4；The sap cavity 1, which is inlayed, installs aperture under water
Leading edge, the vibration/pulsating force monitoring sensor 2 are installed in the aperture, the control cabinet 3 and the vibration/pulsating force
It monitors sensor 2 and hydraulic pump/valve 4 to be connected, the sap cavity 1 is connected with the hydraulic pump/valve 4, and the control cabinet 3 is according to vibration
The monitoring result of dynamic/pulsating force monitoring sensor 2, controls the hydraulic charge and discharge liquid into sap cavity of pump/valve 4.
The present embodiment swashs mechanism of noise generation according to open-celled structure stream, as shown in Fig. 2, sap cavity 1 is mounted on aperture leading edge.
The generation for swashing the strong line spectrum of noise is flowed, rear is mainly hit due to the up-front whirlpool of aperture and production is acted on to leading vortex gain feedback
Raw, when the sharp strong line spectrum of noise of stream generates, neighbouring flow field necessarily shows periodical same-phase oscillating characteristic, and dry end vibration at this time passes
Sensor/green end oscillatory pressure pick-up detects periodic vibration/pulsation phenomenon, and this phenomenon is fed back to control by sensor
Case, control cabinet judgement need to eliminate low-frequency flow swash line spectrum, open hydraulic pump/valve, make sap cavity filling liquid, until sensing data show it is low
Frequency line spectrum is reduced or is disappeared.If device causes flow field dither abnormal, and sensor high-frequency data is higher as the speed of a ship or plane increases,
Then Extract intracavity liquid reduces dither.The Controlling principle of whole device is under the premise of controlling low frequency spectrum lines, as far as possible
Reduce high-frequency noise.As shown in figure 4, fluctuation pressure compares before and after increasing filling liquid sap cavity (being equivalent to pod) for aperture.
It is the liquid such as hydraulic oil/water inside sap cavity of the embodiment of the present invention, 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 is that dry end vibrating sensor or green end fluctuation pressure sense
Device installs the inner surface of aperture under water when for dry end vibrating sensor, when for green end oscillatory pressure pick-up, installation
Under water on the reserved mounting hole in aperture outer surface；The fluctuation pressure or vibrational line that aperture generates are swashed for real-time monitoring stream
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 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, if high-frequency noise increases
The intracavitary liquid of Extract guarantees that flowing sharp noise is in reduced levels in low frequency and medium-high frequency.
The hydraulic pump/valve 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 aperture stream of the present invention swashs the course of work of the liquid-filled active control device of noise are as follows: submarine navigation device is under water
When navigation, the vibration/pulsating force monitoring meeting real-time monitoring structural vibration/flow field fluctuation pressure information of sensor 2, when in monitoring data
When there are low frequency spectrum lines, this phenomenon is fed back to control cabinet 3 by sensor 2, and the judgement of control cabinet 3 need to eliminate low-frequency flow and swash line spectrum,
Hydraulic pump/valve 4 is opened, 1 filling liquid of sap cavity is made.After 1 filling liquid of sap cavity, the periodical same-phase pulsating force in flow field will be interfered, from
And flow field pulsation line spectrum is made to disappear, when data real-time display can be come out pulsation line spectrum disappearance by 2 data of sensor at this time, close liquid
Pump/valve 4 is pressed, sap cavity 1 stops filling liquid.If device causes flow field dither abnormal, the high frequency of sensor 2 as the speed of a ship or plane increases
According to higher, then hydraulic pump/valve 4 is opened in the control of control cabinet 3, extracts liquid in sap cavity 1 out, reduces dither.The control of whole device
Principle processed is under the premise of controlling low frequency spectrum lines, and reduction high-frequency noise, realization global noise are minimum as far as possible.
It is as follows that the underwater aperture stream of the present invention swashs the liquid-filled active control device assembling steps of noise:
A) vibrating sensor 2 is mounted on inside configuration, oscillatory pressure pick-up 2 is mounted on what interior cavity surface was reserved
In aperture, cavity inner surface form 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 with hydraulic pump/valve, and hydraulic pump/valve 4 can control to open and close；
D) sap cavity 1, which is inlayed, is mounted on aperture leading edge, when guaranteeing that device does not work, open surface line style fairing；
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 aperture stream swashs the liquid-filled active control device of noise, which is characterized in that including sap cavity (1), vibration/pulsation
Power monitors sensor (2), control cabinet (3) and hydraulic pump/valve (4)；The sap cavity (1) inlays the leading edge for installing aperture under water,
The vibration/pulsating force monitoring sensor (2) is installed in the aperture, and the control cabinet (3) and the vibration/pulsating force are supervised
It surveys sensor (2) and hydraulic pump/valve (4) is connected, the sap cavity (1) is connected with the hydraulic pump/valve (4), the control cabinet (3)
According to vibration/pulsating force monitoring sensor (2) monitoring result, hydraulic pump/valve (4) charge and discharge liquid into sap cavity is controlled.
2. underwater aperture stream swashs the liquid-filled active control device of noise according to claim 1, which is characterized in that the sap cavity
(1) epidermis is rubber skin, and rubber skin maximum elongation rate is more than 500%, and it is more than 4.5MPa that maximum, which bears pressure,.
3. underwater aperture stream swashs the liquid-filled active control device of noise according to claim 1, which is characterized in that the vibration
Dynamic/pulsating force monitoring sensor (2) is dry end vibrating sensor or green end oscillatory pressure pick-up, when for dry end vibrating sensor
When, the inner surface of aperture under water is installed, when for green end oscillatory pressure pick-up, installs what aperture outer surface under water was reserved
On mounting hole；The fluctuation pressure or vibration line spectrum that aperture generates are swashed for real-time monitoring stream, and feed back to control cabinet.
4. underwater aperture stream swashs the liquid-filled active control device of noise according to claim 1, which is characterized in that the control
Case carries out real-time judge, starts if having low frequency spectrum lines generation according to vibration/pulsating force monitoring sensor (2) acquisition data
Hydraulic pump/valve (4) carries out filling liquid, when line spectrum of pulsing disappears, then stops filling liquid, Extract is intracavitary if high-frequency noise increases
Liquid.
5. underwater aperture stream swashs the liquid-filled active control device of noise according to claim 1, which is characterized in that described hydraulic
Pump/valve (4) is low noise intelligence pump/valve, open state and flow rates controlled case (3) control, and hydraulic pump/valve (4) is using double
Layer isolation mounting vibration isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653157.7A CN110450930B (en) | 2019-07-19 | 2019-07-19 | Liquid-filled active control device for underwater open-pore flow excitation noise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910653157.7A CN110450930B (en) | 2019-07-19 | 2019-07-19 | Liquid-filled active control device for underwater open-pore flow excitation noise |
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| CN110450930A true CN110450930A (en) | 2019-11-15 |
| CN110450930B CN110450930B (en) | 2024-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844629A (en) * | 2021-10-26 | 2021-12-28 | 中国舰船研究设计中心 | Method for suppressing vibration noise of flow shock cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844629A (en) * | 2021-10-26 | 2021-12-28 | 中国舰船研究设计中心 | Method for suppressing vibration noise of flow shock cavity |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN110450930B (en) | 2024-08-02 |
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