CN206921661U - A kind of active-mode active denoising device - Google Patents
A kind of active-mode active denoising device Download PDFInfo
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- CN206921661U CN206921661U CN201720503834.3U CN201720503834U CN206921661U CN 206921661 U CN206921661 U CN 206921661U CN 201720503834 U CN201720503834 U CN 201720503834U CN 206921661 U CN206921661 U CN 206921661U
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- power transformation
- sliding bar
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Abstract
The utility model discloses a kind of active-mode active denoising device, including power transformation tank shell, some support feets are provided with the power transformation tank shell, decoupling rod is provided with the support feet, sliding bar is provided with the decoupling rod, the power transformation box housing bottom is provided with sliding rail, the sliding bar sliding is connected in sliding rail, the drive mechanism for driving sliding bar to move is provided with the sliding bar, the power transformation box enclosure interior is provided with sonic apparatus, the sonic apparatus is used to receive the noise that power transformation box is sent, acoustical generator is provided with outside the power transformation box, the sonic apparatus is coupled with processor, the processor receives the voice data of sonic apparatus, the processor does reverse process to sonic data, the data after reverse process are transferred to acoustical generator afterwards, the acoustical generator sends the sound with noise cancellation.Good Noise Reduction can be thus played, while in the technical scheme in the present invention, can first be adjusted to the state of lowest amplitude, reduces the energy consumption of acoustical generator.
Description
Technical field
A kind of transformer denoising device is the utility model is related to, more particularly to a kind of active-mode active noise reduction dress
Put.
Background technology
With developing rapidly for national economy, the power demand of the whole society increases rapidly, urban inner high-power transformer by
It is cumulative to add.Especially because the needs of the continuous expansion in city and city network transformation, some transformer stations need to build in close
At residential block, this normal life and work for people, which generates, to be had a strong impact on, transformer station's Noise measarement has been very urgent.
(1) sound field coherence theory
Sound field coherence theory is the basis of active noise reduction, i.e., the direction of propagation is identical, after the superposition of the row sound wave of frequency identical two
Interference can be produced, its total sound pressure amplitude may decrease or increase after sound wave interference, this by two row sound waves sound pressure amplitude
And phase decision.When the amplitude of department level sound source and secondary sound source is equal, and phase angle differs 180 °, noise is completely counterbalanced by.Sound field is concerned with
Theory is the theoretical foundation of one-dimensional noise elimination.
Huygens's theory is pointed out, sound field caused by primary sound source, can regard generation as in each bin of its wave surface
The Huygens source of wavelet, serving the location and shape of any moment wave surface can all be determined by this sub- enveloping surface.When all
Primary point sound source when being included in a certain occluding surface, the outer any point velocity potential of curved surface, the Huygens on curved surface can be regarded as
Source and is had no effect to velocity potential any in curved surface in the synthesis of the velocity potential of the point.
It is theoretical based on more than, if continuously laying enough and Huygens's constant amplitude, anti-phase secondary sound source on curved surface, according to
Sound wave coherence theory, so that it may which the velocity potential for making the outer arbitrfary point of curved surface is zero, so as to be completely counterbalanced by the sound field of primary sound source.
In practical application, absolute global noise elimination is realized, it is desirable to continuously arrange that unlimited number of feel has three on occluding surface
The secondary sound source of level sub-feature, this is impossible in actual applications, and common method is laid on occluding surface
Limited multiple discrete sound sources, by optimizing to obtain comparatively ideal noise reduction.
Active Active noise control, abbreviation ANC (Active Noise Control), in particular to a set of noise reduction control of use
Process circuit processed, carry out adaptability computing, come export with raw noise opposite in phase, frequency and amplitude identical inverse noise,
Noise reduction purpose is reached.Active noise reduction technology, just it has been suggested early in last century, and maturation is applied in military project, civil aviaton field.
Nineteen forty-seven Mancur Olson (H.F.Olosn) just proposes Technique of Active Noise Control, but makes little progress, until the eighties with
Come, because the high development of signal processing technology and electronic technology just has obvious progress.Modern active noise technology is sound
, signal processing technology, the cross-synthesis of control engineering and electronics use.
Existing noisy information is extracted with microphone, an anti-acoustical signal is established after " real-time " analysis, then it is (secondary with loudspeaker
Level sound source) the anti-acoustical signal of " real-time " broadcasting.Anti- acoustical signal produces destructive interference with existing noise, so that the noise in the region
It is minimized.Existing noisy energy may be absorbed by secondary sound source, it is also possible to only be transferred to other regions.Effective noise
The effect of control is relative with " real-time ".Accomplish that " real-time " is easier to low-frequency noise, therefore active technique is made an uproar to control low frequency
Sound is especially effective.Two aspects are had in modern Active noise control：First, noise source suppresses (or total space noise elimination), second,
Local sound absorption；The two principle is identical, and simply the arrangement of secondary sound source is different.Active noise control has limitation, mainly has
It is very narrow to imitate frequency band.But these shortcomings then can be partly overcome using adaptive technique and high-speed computer and are increased the benefit.It is active to make an uproar
The application of acoustic control is at present also not extensively, but have potential prospect, it is expected to for each middle blower fan, steam turbine, internal combustion engine, compressor
The exterior space such as intake and exhaust duct noise, transformer noise source and cabin, combustion chamber etc. close the suppression of noise field, can also make
Antinoise is sent, receiver.
Technique of Active Noise Control includes acoustic receiver, processor, acoustical generator, and sound wave is received by acoustic receiver,
The reverse process of sound wave is carried out by processor afterwards, finally passes through acoustical generator sounding again.
This technology is had been applied in power transformation box, but is that can pass through adjustment during being shaken at power transformation box hair
The position of damping device is entered row buffering in advance, can be to causing the unnecessary energy if directly carrying out Active noise control
Waste, compare send larger sound, it is necessary to energy consumption it is also higher.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of active-mode active noise reduction dress
Put.
To achieve the above object, the utility model provides following technical scheme
A kind of active-mode active denoising device, including power transformation tank shell, some supports are provided with the power transformation tank shell
Pin, decoupling rod is provided with the support feet, sliding bar is provided with the decoupling rod, the power transformation box housing bottom is provided with
Sliding rail, the sliding bar sliding are connected in sliding rail, are provided with the sliding bar for driving sliding bar to move
Drive mechanism, the power transformation box enclosure interior is provided with sonic apparatus, and the sonic apparatus is used to receive the noise that power transformation box is sent,
Acoustical generator is provided with outside the power transformation box, the sonic apparatus is coupled with processor, and the processor receives the sound number of sonic apparatus
According to the processor does reverse process to sonic data, and the data after reverse process are transferred into acoustical generator, the sounding afterwards
Device sends the sound with noise cancellation.
As further improvement of the utility model, the decoupling rod includes spring, and the both ends of the spring is separately fixed at
In support feet and sliding bar.
As further improvement of the utility model, the both ends of the spring is respectively arranged with drag hook, the support feet and cunning
The draw ring for coordinating with drag hook is provided with lever.
As further improvement of the utility model, installing zone is formed between the adjacent decoupling rod, in the installing zone
The damping net being connected with decoupling rod is provided with, the damping net is made up of rubber, and sleeve pipe, the spring are provided with outside the spring
Positioned at the hollow bulb of sleeve pipe, the damping net is fixed on sleeve pipe.
As further improvement of the utility model, the damping net includes some shock absorption strips, and the shock absorption strip is in the shape of the letter V
Or C fonts.
As further improvement of the utility model, the shock absorption strip is provided at both ends with the jack for sleeve pipe insertion, same
Adjacent shock absorption strip on decoupling rod is in oppositely arranged.
As further improvement of the utility model, slot is provided with the shock absorption strip and for inserting same installation
Cutting in area in another shock absorption strip slot.
As further improvement of the utility model, grafting block is provided with the shock absorption strip, the jack is located at grafting
On block, the jack includes two and is open, and caulking groove, another openings are provided with one opening direction of direction on the grafting block
Set up the abaculus coordinated with caulking groove.
As further improvement of the utility model, the drive mechanism is rotary electric machine, the output of the rotary electric machine
Rotating shaft is provided with end, strip slippage slot is provided with the sliding bar, slipping block, the sliding are provided with the rotating shaft
Block is rectangular, and the slipping block is slidably connected in slippage slot, and sliding block is provided with the sliding bar, and the sliding rail is in spiral shell
Shape is revolved, the sliding block sliding is connected in sliding rail.
As further improvement of the utility model, stopper slot is provided with the sliding rail, is set on the sliding block
There is the limited block for being slid in stopper slot.
The beneficial effects of the utility model, sound are the sound waves that object vibration is just given birth to, and its essence is ripple.Noise is sounding
Body does random vibration hair
Raw sound.Therefore, noise is exactly a kind of ripple.The essence of " being made an uproar with making an uproar to control " is " with Bo Zhibo ", its physical essence
It is theoretical based on sound field coherence theory and Huygens.
(1) sound field coherence theory
Sound field coherence theory is the basis of active noise reduction, i.e., the direction of propagation is identical, after the superposition of the row sound wave of frequency identical two
Interference can be produced, its total sound pressure amplitude may decrease or increase after sound wave interference, this by two row sound waves sound pressure amplitude
And phase decision.When the amplitude of department level sound source and secondary sound source is equal, and phase angle differs 180 °, noise is completely counterbalanced by.Sound field is concerned with
Theory is the theoretical foundation of one-dimensional noise elimination.
Huygens's theory is pointed out, sound field caused by primary sound source, can regard generation as in each bin of its wave surface
The Huygens source of wavelet, serving the location and shape of any moment wave surface can all be determined by this sub- enveloping surface.When all
Primary point sound source when being included in a certain occluding surface, the outer any point velocity potential of curved surface, the Huygens on curved surface can be regarded as
Source and is had no effect to velocity potential any in curved surface in the synthesis of the velocity potential of the point.
It is theoretical based on more than, if continuously laying enough and Huygens's constant amplitude, anti-phase secondary sound source on curved surface, according to
Sound wave coherence theory, so that it may which the velocity potential for making the outer arbitrfary point of curved surface is zero, so as to be completely counterbalanced by the sound field of primary sound source.
In practical application, absolute global noise elimination is realized, it is desirable to continuously arrange that unlimited number of feel has three on occluding surface
The secondary sound source of level sub-feature, this is impossible in actual applications, and common method is laid on occluding surface
Limited multiple discrete sound sources, by optimizing to obtain comparatively ideal noise reduction.
Active Active noise control, abbreviation ANC (Active Noise Control), in particular to a set of noise reduction control of use
Process circuit processed, carry out adaptability computing, come export with raw noise opposite in phase, frequency and amplitude identical inverse noise,
Noise reduction purpose is reached.Active noise reduction technology, just it has been suggested early in last century, and maturation is applied in military project, civil aviaton field.
Pass through above-mentioned technical proposal, in power transformation box normal work, can make a noise, carried out pair by sonic apparatus first
In can directly select FDP204-SW sonic apparatus in the detection of sound wave, the selection of sonic apparatus, the frequency of sound can be recorded, shaken
Width, wavelength, by drive mechanism sliding bar can be driven to be moved in sliding rail afterwards, to adjust between each decoupling rod
Position, decoupling rod, support feet, power transformation box can be in a shock-damping structure, when being worked due to power transformation box, vibrations point is difficult to not
It Accurate Determining during startup, can determine only after normal work, by the regulation of sliding bar and drive mechanism, can adjust
Shock-reducing and noise-reducing structure so that be adjusted to optimal damping position, the judgement of optimum position can by frequency, amplitude, wavelength come
Judgement, general frequency and wavelength are limited by the vibrations of power transformation box in itself, and therefore, it is difficult to change, now, best judgement is
Judged by amplitude, by the position for adjusting sliding bar so that during amplitude minimum, by the frequency in acoustic signals, amplitude, wavelength
To be input in processor, processor can select PC or programmable single-chip microcomputer, acoustic signals be carried out reverse
Processing, i.e., frequency, wavelength are identical, the opposite state of amplitude, the reverse signal of reverse process are transferred in acoustical generator again afterwards,
Send the sound neutralized with noise.Meanwhile in use, the voice signal being collected into first can also be passed through into wave filter mistake
Filter, and wave filter can successively pass through ADC, DSP, DAC.Good Noise Reduction can be thus played, while this practicality is new
In technical scheme in type, the state of lowest amplitude can be first adjusted to, reduces the energy consumption of acoustical generator.
Brief description of the drawings
Fig. 1 is the overall structure figure of utility model；
Fig. 2 is sliding rail schematic diagram of the present utility model；
Fig. 3 is damping web frame schematic diagram of the present utility model；
Fig. 4 is drive mechanism connection diagram of the present utility model；
Fig. 5 is shock absorption strip structural representation of the present utility model；
Fig. 6 is stopper slot of the present utility model and standoff features cooperation schematic diagram.
1st, power transformation tank shell；2nd, support feet；3rd, decoupling rod；4th, sliding bar；5th, sliding rail；6th, sonic apparatus；7th, acoustical generator；
8th, spring；9th, drag hook；10th, draw ring；11st, installing zone；12nd, damping net；13rd, sleeve pipe；14th, shock absorption strip；15th, jack；16th, cutting；
17th, slot；18th, grafting block；19th, caulking groove；20th, abaculus；21st, rotating shaft；22nd, slippage slot；23rd, slipping block；24th, sliding block；25th, it is spacing
Groove；26th, limited block；27th, rotary electric machine.
Embodiment
The utility model is described in further detail below in conjunction with the embodiment given by accompanying drawing.
Referring to figs. 1 to shown in 6, a kind of active-mode active denoising device of the present embodiment, including power transformation tank shell 1, it is described
Some support feets 2 are provided with power transformation tank shell 1, decoupling rod 3 is provided with the support feet 2, is provided with the decoupling rod 3
Sliding bar 4, the bottom of power transformation tank shell 1 are provided with sliding rail 5, and the sliding bar sliding is connected in sliding rail 5, institute
The drive mechanism being provided with sliding bar 4 for driving sliding bar 4 to move is stated, the power transformation tank shell 1 is internally provided with sound wave
Instrument 6, the sonic apparatus 6 are used to receive the noise that power transformation box is sent, and acoustical generator 7, the sonic apparatus 6 are provided with outside the power transformation box
Processor is coupled with, the processor receives the voice data of sonic apparatus 6, and the processor does reverse process to sonic data,
The data after reverse process are transferred to acoustical generator 7 afterwards, the acoustical generator 7 sends the sound with noise cancellation.
Sound is the sound wave that object vibration is just given birth to, and its essence is ripple.Noise is that sounding body does random vibration hair
Raw sound.Therefore, noise is exactly a kind of ripple.The essence of " being made an uproar with making an uproar to control " is " with Bo Zhibo ", its physical essence
It is theoretical based on sound field coherence theory and Huygens.
(1) sound field coherence theory
Sound field coherence theory is the basis of active noise reduction, i.e., the direction of propagation is identical, after the superposition of the row sound wave of frequency identical two
Interference can be produced, its total sound pressure amplitude may decrease or increase after sound wave interference, this by two row sound waves sound pressure amplitude
And phase decision.When the amplitude of department level sound source and secondary sound source is equal, and phase angle differs 180 °, noise is completely counterbalanced by.Sound field is concerned with
Theory is the theoretical foundation of one-dimensional noise elimination.
Huygens's theory is pointed out, sound field caused by primary sound source, can regard generation as in each bin of its wave surface
The Huygens source of wavelet, serving the location and shape of any moment wave surface can all be determined by this sub- enveloping surface.When all
Primary point sound source when being included in a certain occluding surface, the outer any point velocity potential of curved surface, the Huygens on curved surface can be regarded as
Source and is had no effect to velocity potential any in curved surface in the synthesis of the velocity potential of the point.
It is theoretical based on more than, if continuously laying enough and Huygens's constant amplitude, anti-phase secondary sound source on curved surface,
According to sound wave coherence theory, so that it may which the velocity potential for making the outer arbitrfary point of curved surface is zero, so as to be completely counterbalanced by primary sound source
Sound field.
In practical application, absolute global noise elimination is realized, it is desirable to continuously arrange that unlimited number of feel has three on occluding surface
The secondary sound source of level sub-feature, this is impossible in actual applications, and common method is laid on occluding surface
Limited multiple discrete sound sources, by optimizing to obtain comparatively ideal noise reduction.
Active Active noise control, abbreviation ANC (Active Noise Control), in particular to a set of noise reduction control of use
Process circuit processed, carry out adaptability computing, come export with raw noise opposite in phase, frequency and amplitude identical inverse noise,
Noise reduction purpose is reached.Active noise reduction technology, just it has been suggested early in last century, and maturation is applied in military project, civil aviaton field.
Pass through above-mentioned technical proposal, in power transformation box normal work, can make a noise, carried out by sonic apparatus 6 first
Detection for sound wave, FDP204-SW sonic apparatus 6 can be directly selected in the selection of sonic apparatus 6, can record the frequency of sound
Rate, amplitude, wavelength, by drive mechanism sliding bar 4 can be driven to be moved in sliding rail 5 afterwards, to adjust each subtract
The position between bar 3 is shaken, decoupling rod 3, support feet 2, power transformation box can be in a shock-damping structure, when being worked due to power transformation box, shake
Dynamic point is difficult to the Accurate Determining when not actuated, can be determined only after normal work, passes through sliding bar 4 and drive mechanism
Regulation, can adjust shock-reducing and noise-reducing structure so that be adjusted to optimal damping position, the judgement of optimum position can pass through frequency
Rate, amplitude, wavelength judge, general frequency and wavelength are limited by the vibrations of power transformation box in itself, therefore, it is difficult to change, this
When, best judgement is judged by amplitude, and the judgement of amplitude can be by artificially being judged, by adjusting sliding bar 4
Position so that during amplitude minimum, the frequency in acoustic signals, amplitude, wavelength are input in processor, processor can select
With PC or programmable single-chip microcomputer, acoustic signals are subjected to reverse process, i.e. frequency, wavelength is identical, and amplitude is opposite
State, the reverse signal of reverse process is transferred in acoustical generator 7 again afterwards, send with noise neutralize sound.Meanwhile
During use, can also first by the voice signal being collected into by filters filter, and wave filter can successively pass through ADC,
DSP、DAC.Good Noise Reduction can be thus played, while in the technical scheme in the utility model, can first be adjusted
To the state of lowest amplitude, the energy consumption of acoustical generator 7 is reduced.
As a kind of improved embodiment, the decoupling rod 3 includes spring 8, and the both ends of spring 8 are fixed respectively
In support feet 2 and sliding bar 4.
Pass through above-mentioned technical proposal, spring 8 have preferably elasticity, and a kind of element of preferably damping energy-absorbing, held
Easily obtain, and be easily installed.
As a kind of improved embodiment, the both ends of spring 8 are respectively arranged with drag hook 9, the He of support feet 2
The draw ring 10 for coordinating with drag hook 9 is provided with sliding bar 4.
By the setting of drag hook 9 and draw ring 10, spring 8 is enabled to be more convenient to be mounted.
As a kind of improved embodiment, installing zone 11, the installing zone are formed between the adjacent decoupling rod 3
The damping net 12 being connected with decoupling rod 3 is provided with 11, the damping net 12 is made up of rubber, and set is provided with outside the spring 8
Pipe 13, the spring 8 are located at the hollow bulb of sleeve pipe 13, and the damping net 12 is fixed on sleeve pipe 13.
Pass through above-mentioned technical proposal, by the setting of damping net 12, it can further strengthen overall damping effect, it is hollow
Sleeve pipe 13 be socketed on spring 8, spring 8 itself will play the function of deformation damping, be not suitable for damping net 12 and be directly connected to,
Therefore sleeve pipe 13 is served in the case where not influenceing spring 8, damping net 12 can be introduced into whole system, be reached preferable
Damping effect.
As a kind of improved embodiment, the damping net 12 includes some shock absorption strips 14, the shock absorption strip 14
It is in the shape of the letter V or C fonts.
By the setting of shock absorption strip 14, damping net 12 is divided into the shock absorption strip 14 of strip one by one, phase can be caused
Be arranged to V-shaped or C fonts for can more facilitate in installation process, while by shock absorption strip 14, adjust sliding bar 4 when
Wait.Relative position change occurs between decoupling rod 3 and decoupling rod 3, now the shock absorption strip 14 of V-shaped or C fonts can be preferably
Deformed upon.
As a kind of improved embodiment, the shock absorption strip 14 is provided at both ends with the jack inserted for sleeve pipe 13
15, the adjacent shock absorption strip 14 on same decoupling rod 3 is in oppositely arranged.
Pass through above-mentioned technical proposal, in installation process, it is only necessary to the jack 15 being inserted into sleeve pipe 13 in shock absorption strip 14
In, such mounting structure is more convenient.
As a kind of improved embodiment, slot 17 and same for inserting is provided with the shock absorption strip 14
Cutting 16 in installing zone 11 in another slot 17 of shock absorption strip 14.
Have by the shock absorption strip 14 of cutting 16 and the cooperation of slot 17 in same installing zone 11 preferably close
Property so that connect into an entirety.
As a kind of improved embodiment, grafting block 18, the jack 15 are provided with the shock absorption strip 14
In on grafting block 18, the jack 15 includes two openings, embedding towards being provided with an opening direction on the grafting block 18
Groove 19, the abaculus 20 coordinated with caulking groove 19 is provided with another opening direction.
Pass through the cooperation of caulking groove 19 and abaculus 20 so that the connected shock absorption strip 14 on same sleeve pipe 13 has more close
Mounting structure.
As a kind of improved embodiment, the drive mechanism is rotary electric machine 27, the rotary electric machine 27
Rotating shaft 21 is provided with output end, strip slippage slot 22 is provided with the sliding bar 4, sliding is provided with the rotating shaft 21
Block 23, the slipping block 23 is rectangular, and the slipping block 23 is slidably connected in slippage slot 22, is provided with the sliding bar 4
Sliding block 24, in the shape of a spiral, the sliding of sliding block 24 is connected in sliding rail 5 sliding rail 5.
When rotary electric machine 27 operates, rotating shaft 21 can be driven to rotate, as sliding block 24 is along spiral helicine sliding rail 5
Operation, so as to change position, finds optimal damping position, spiral helicine setting, can spread all over each position, seek more comprehensively
Look for optimum position.Additionally by the setting of slippage slot 22, when being moved along helical form sliding rail 5, the sliding in rotating shaft 21
Block 23 moves in sliding rail, thus sliding bar 4 can be driven to move, can adapt to the spiral of sliding rail 5 again
Shape.
As a kind of improved embodiment, stopper slot 25 is provided with the sliding rail 5, on the sliding block 24
It is provided with the limited block 26 for the sliding in stopper slot 25.
So that when sliding block 24 moves, it is not easy to deviate.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. active-mode active denoising device, it is characterised in that：Including power transformation tank shell (1), on the power transformation tank shell (1) Some support feets (2) are provided with, decoupling rod (3) is provided with the support feet (2), slip is provided with the decoupling rod (3) Bar (4), power transformation tank shell (1) bottom are provided with sliding rail (5), and the sliding bar sliding is connected to sliding rail (5) It is interior, the drive mechanism for driving sliding bar (4) to move is provided with the sliding bar (4), the power transformation tank shell (1) is internal Sonic apparatus (6) is provided with, the sonic apparatus (6) is used to receive the noise that power transformation box is sent, and sounding is provided with outside the power transformation box Device (7), the sonic apparatus (6) are coupled with processor, and the processor receives the voice data of sonic apparatus (6), the processor Reverse process is done to sonic data, the data after reverse process are transferred to acoustical generator (7) afterwards, the acoustical generator (7) sends With the sound of noise cancellation.
- A kind of 2. active-mode active denoising device according to claim 1, it is characterised in that：The decoupling rod (3) includes Spring (8), spring (8) both ends are separately fixed in support feet (2) and sliding bar (4).
- A kind of 3. active-mode active denoising device according to claim 2, it is characterised in that：Spring (8) both ends point Drag hook (9) is not provided with, and the draw ring (10) for coordinating with drag hook (9) is provided with the support feet (2) and sliding bar (4).
- A kind of 4. active-mode active denoising device according to claim 3, it is characterised in that：The adjacent decoupling rod (3) Between form installing zone (11), is provided with the damping net (12) being connected with decoupling rod (3), the damping in the installing zone (11) Net (12) is made up of rubber, and sleeve pipe (13) is provided with outside the spring (8), and the spring (8) is located at the hollow bulb of sleeve pipe (13), The damping net (12) is fixed on sleeve pipe (13).
- A kind of 5. active-mode active denoising device according to claim 4, it is characterised in that：The damping net (12) includes Some shock absorption strips (14), the shock absorption strip (14) is in the shape of the letter V or C fonts.
- A kind of 6. active-mode active denoising device according to claim 5, it is characterised in that：Shock absorption strip (14) both ends The jack (15) for sleeve pipe (13) insertion is provided with, the adjacent shock absorption strip (14) on same decoupling rod (3) is in oppositely arranged.
- A kind of 7. active-mode active denoising device according to claim 6, it is characterised in that：Set on the shock absorption strip (14) It is equipped with slot (17) and for inserting the cutting (16) in same installing zone (11) in another shock absorption strip (14) slot (17).
- A kind of 8. active-mode active denoising device according to claim 7, it is characterised in that：Set on the shock absorption strip (14) Grafting block (18) is equipped with, the jack (15) is located on grafting block (18), and the jack (15) includes two openings, the grafting Caulking groove (19) is provided with one opening direction of direction on block (18), is provided with what is coordinated with caulking groove (19) on another opening direction Abaculus (20).
- A kind of 9. active-mode active denoising device according to claim 8, it is characterised in that：The drive mechanism is rotation Motor (27), rotating shaft (21) is provided with the output end of the rotary electric machine (27), strip is provided with the sliding bar (4) Slippage slot (22), slipping block (23) is provided with the rotating shaft (21), the slipping block (23) is rectangular, the slipping block (23) Be slidably connected in slippage slot (22), be provided with sliding block (24) on the sliding bar (4), the sliding rail (5) in the shape of a spiral, Sliding block (24) sliding is connected in sliding rail (5).
- A kind of 10. active-mode active denoising device according to claim 9, it is characterised in that：On the sliding rail (5) Stopper slot (25) is provided with, the limited block (26) for the sliding in stopper slot (25) is provided with the sliding block (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503834.3U CN206921661U (en) | 2017-05-08 | 2017-05-08 | A kind of active-mode active denoising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720503834.3U CN206921661U (en) | 2017-05-08 | 2017-05-08 | A kind of active-mode active denoising device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206921661U true CN206921661U (en) | 2018-01-23 |
Family
ID=61307463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720503834.3U Expired - Fee Related CN206921661U (en) | 2017-05-08 | 2017-05-08 | A kind of active-mode active denoising device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206921661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992066A (en) * | 2017-05-08 | 2017-07-28 | 温州电力设计有限公司 | A kind of active-mode active denoising device |
-
2017
- 2017-05-08 CN CN201720503834.3U patent/CN206921661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992066A (en) * | 2017-05-08 | 2017-07-28 | 温州电力设计有限公司 | A kind of active-mode active denoising device |
| CN106992066B (en) * | 2017-05-08 | 2018-09-18 | 国网浙江省电力公司温州供电公司 | A kind of active-mode active denoising device |
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