CN207094037U - A kind of pipeline silencer and the pipe-line system with the silencer - Google Patents
A kind of pipeline silencer and the pipe-line system with the silencer Download PDFInfo
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- CN207094037U CN207094037U CN201720950083.XU CN201720950083U CN207094037U CN 207094037 U CN207094037 U CN 207094037U CN 201720950083 U CN201720950083 U CN 201720950083U CN 207094037 U CN207094037 U CN 207094037U
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- housing
- magnetic attraction
- sound absorption
- vibrating diaphragm
- pipeline silencer
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- 230000003584 silencer Effects 0.000 title claims abstract description 60
- 238000010521 absorption reaction Methods 0.000 claims abstract description 48
- 239000011159 matrix material Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Pipe Accessories (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
It the utility model is related to duct attenuation equipment technical field, more particularly to a kind of pipeline silencer and the pipe-line system with the silencer.Pipeline silencer of the present utility model includes housing and magnetic attraction anechoic sheet, magnetic attraction anechoic sheet is installed on housing, a sound absorption cavity is provided with magnetic attraction anechoic sheet, suction structure is provided with sound absorption cavity, suction structure has negative stiffness, and the air in cavity that absorbs sound has positive rigidity, in parallel between suction structure and the air in sound absorption cavity, so as to by the effect of magnetic force negative stiffness, realize effect of low-frequency sound absorption.The pipeline silencer is compared with existing pipeline silencer, it can realize under same cavity depth state, acoustic characteristicses with more low frequency, and under same sound absorption frequency range state, pipeline silencer of the present utility model has the smaller sound absorption cavity of depth, so as to have overall compact structure so that there is more excellent acoustically effective using the pipe-line system of pipeline silencer of the present utility model.
Description
Technical field
It the utility model is related to duct attenuation equipment technical field, more particularly to a kind of pipeline silencer and there is the noise elimination
The pipe-line system of device.
Background technology
Silencer is a kind of device for preventing sound transmission and allowing air-flow to pass through, and is to eliminate discharge of steam Aerodynamic Noise of A
Important measures.Pipe muffler (silencer) is mainly used in the heat power equipment discharge of steam such as boiler in industry, steam turbine
Effectively eliminate the noise, while be also widely used in the boiler steam discharge of the industry such as oil, chemical industry, metallurgy, weaving and other gas dampings
Discharge.
Existing pipeline silencer, impedance composite noise-cancelling theory is used mostly, installs resistive sound absorption cotton additional outside expansion chambers
Structure, according to designed by the spectral characteristic for being depressured the residual noise that body is sent, to effectively absorb residual noise.Wherein,
Low frequency needs the thickness of material, cavity volume very big when eliminating the noise, and due to complicated, weight is big, high-temperature oxydation sound absorption filler,
High velocity air impacts the reason such as sound absorption filler and aqueous vapor infiltration sound absorption filler, and silencer is easy to occur repairing frequently, eliminated the noise
Situations such as effect is poor, service life is short.Resistance resonance exhaust silencer is designed using resonance sound-absorbing principle, and working band is relatively
It is narrow, but due to its without using it is any it is resistive sound absorption filler and it is pollution-free many advantages, such as, obtained extensively in field of noise control
Concern.But this silencer required cavity volume when low frequency is eliminated the noise is often very big so that this structure is needing frivolous disappear
Certain difficulty is encountered in the practical engineering application of sound device.It would therefore be highly desirable to research and develop a kind of compact low frequency pipeline silencer.
Utility model content
(1) technical problems to be solved
The technical problems to be solved in the utility model is that solve existing pipeline silencer cavity depth in low frequency noise elimination structure
Spend the problem of big.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of pipeline silencer, including housing and magnetic are inhaled
Power anechoic sheet, the magnetic attraction anechoic sheet are installed on housing, and a sound absorption cavity is provided with the magnetic attraction anechoic sheet, described
Suction structure is provided with sound absorption cavity, the suction structure has negative stiffness, and the air to absorb sound in cavity has just firm
Degree, it is in parallel between the suction structure and the air in the sound absorption cavity.
Preferably, the magnetic attraction anechoic sheet includes matrix, vibrating diaphragm and magnet, one end of described matrix by vibrating diaphragm with
Housing connects, and the magnet is arranged in matrix, attracted each other between the magnet and vibrating diaphragm, to have negative stiffness described in formation
Suction structure；The sound absorption cavity is located in matrix, and is arranged between the magnet and vibrating diaphragm.
Preferably, one end of described matrix is openend, and the other end is blind end, and the openend is connected on housing,
The vibrating diaphragm is covered on openend, and the magnet is arranged in blind end, is oppositely arranged with the vibrating diaphragm.
Preferably, the material of the vibrating diaphragm is one or more of combinations in plastics, metal simple-substance and metal alloy.
Preferably, the vibrating diaphragm is provided with magnetosphere.
Preferably, the dismountable grafting of magnetic attraction anechoic sheet is on the housing.
Preferably, the magnetic attraction anechoic sheet is fixedly connected on the housing.
Preferably, the housing is connected with one or more magnetic attraction anechoic sheets, one or more magnetic
Suction anechoic sheet is respectively arranged in the housing internally and/or externally.
Preferably, when the magnetic attraction anechoic sheet is installed on the inside of the housing, described matrix is connected to the shell
On the inwall of body, so as to be contacted by the air-flow in the housing with the vibrating diaphragm；The magnetic attraction anechoic sheet is installed on institute
When stating the outside of housing, the openend of described matrix is connected with the outer wall of the housing, so that by the air-flow in the housing
Contacted with the vibrating diaphragm, the closed end of described matrix is protruding.
The utility model additionally provides a kind of pipe-line system, including pipeline silencer as described above.
(3) beneficial effect
Above-mentioned technical proposal of the present utility model has the advantages that：Pipeline silencer of the present utility model includes shell
Body and magnetic attraction anechoic sheet, magnetic attraction anechoic sheet are installed on housing, and a sound absorption cavity is provided with magnetic attraction anechoic sheet,
Suction structure is provided with sound absorption cavity, suction structure has negative stiffness, and the air to absorb sound in cavity has positive rigidity, suction knot
It is in parallel between structure and the air in sound absorption cavity, so as to by the effect of magnetic force negative stiffness, realize effect of low-frequency sound absorption.The pipeline
Silencer can be realized under same cavity depth state compared with existing pipeline silencer, with disappearing for more low frequency
Sound characteristicses, and under same sound absorption frequency range state, pipeline silencer of the present utility model has the smaller sound absorption cavity of depth,
So as to have overall compact structure so that had using the pipe-line system of pipeline silencer of the present utility model more excellent
Acoustically effective；In addition, pipeline silencer of the present utility model is simple and compact for structure, repair demolition is very convenient, is easy to safeguard
And cleaning.
Brief description of the drawings
Fig. 1 is the structural representation of the magnetic attraction anechoic sheet of the utility model embodiment；
Fig. 2 is that the magnetic attraction anechoic sheet of the utility model embodiment is arranged on the structural representation of enclosure interior；
Fig. 3 is that the magnetic attraction anechoic sheet of the utility model embodiment is arranged on the structural representation of hull outside.
Wherein, 1, housing；2nd, absorb sound cavity；3rd, magnetic attraction anechoic sheet；4th, matrix；5th, vibrating diaphragm；6th, magnet.
Embodiment
Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following examples
For illustrating the utility model, but can not be used for limiting the scope of the utility model.
In description of the present utility model, unless otherwise indicated, " multiple " are meant that two or more；It is unless another
It is described, the implication of " nick shaped " is the shape in addition to section is concordant.Term " on ", " under ", "left", "right", " interior ", " outer ",
The orientation or position relationship of the instruction such as " front end ", " rear end ", " head ", " afterbody " are to be closed based on orientation shown in the drawings or position
System, it is for only for ease of and describes the utility model and simplified description, rather than the device or element of instruction or hint meaning is necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
The pipeline silencer that the present embodiment provides includes housing 1 and magnetic attraction anechoic sheet 3, and magnetic attraction anechoic sheet 3 is pacified
Loaded on a sound absorption cavity 2 is provided with housing 1, in magnetic attraction anechoic sheet 3, suction structure, suction knot are provided with the cavity 2 that absorbs sound
Structure has negative stiffness, and the air in cavity 2 that absorbs sound has positive rigidity, negative stiffness and the air in sound absorption cavity 2 of suction structure
Positive rigidity between it is in parallel, so as to by the effect of magnetic force negative stiffness, the depth of compression sound absorption cavity 2, realize that low frequency absorption is imitated
While fruit so that the pipeline silencer can be realized in same cavity depth state compared with existing pipeline silencer
Under, there are the acoustic characteristicses of more low frequency, and absorbed sound same under frequency range state, pipeline silencer of the present utility model has
The smaller sound absorption cavity 2 of depth, so as to have overall compact structure so that using the pipe of pipeline silencer of the present utility model
Road system has more excellent acoustically effective；In addition, pipeline silencer is simple and compact for structure, magnetic attraction anechoic sheet 3 can
Dismounting is plugged on housing 1, and repair demolition is very convenient, is easy to safeguard and clears up, similarly, also can be by magnetic attraction anechoic sheet
3 are fixedly connected on housing 1, such as are welded on housing 1, to ensure the stability of pipeline configuration.
Specifically, as shown in figure 1, the magnetic attraction anechoic sheet 3 of the present embodiment includes matrix 4, vibrating diaphragm 5 and magnet 6, sound absorption
Cavity 2 is located in matrix 4, and is arranged between magnet 6 and vibrating diaphragm 5, and one end of matrix 4 is connected by vibrating diaphragm 5 with housing 1, when
In housing 1 high velocity air of intracavitary by when, vibrating diaphragm 5 by vibration to sound absorption cavity 2 in transmit sound wave；Magnet 6 is arranged on base
In body 4, attracted each other between magnet 6 and vibrating diaphragm 5, to form the suction structure with negative stiffness, by the suction structure with inhaling
It is in parallel between the inner chamber air of sound cavity 2, acted on, the depth of compression sound absorption cavity 2, realized more using the negative stiffness of suction structure
The acoustically effective of low frequency；Under same sound absorption frequency range state, the sound absorption depth of cavity 2 is smaller, more compact structure.
Preferably, the material of matrix 4 is rigid material, is openend in one end of matrix 4, and the other end is blind end, base
Body 4 is connected on housing 1 by openend, and vibrating diaphragm 5 is covered on openend, and magnet 6 is arranged in blind end, with the phase of vibrating diaphragm 5
To setting, to ensure the symmetrical configuration between magnet 6 and vibrating diaphragm 5；It is preferred that the material of vibrating diaphragm 5 is plastics, metal simple-substance and metal
One or more of combinations in alloy, preferably vibrating diaphragm are provided with magnetosphere, when the material of vibrating diaphragm 5 for ferroalloy or is attached with magnetic
During the plastics of property layer, the magneticaction of magnet 6 causes there is relative suction between vibrating diaphragm 5 and magnet 6, produces the suction of negative stiffness
Power structure, specifically, magnetosphere can be sheet metal or other structures, as long as ensureing to set magnetospheric vibrating diaphragm 5 can be with
Suction is produced between magnet 6, similarly, when the material of vibrating diaphragm 5 is has magnetic metal simple-substance or metal alloy, this shakes
Film 5 is considered as has magnetosphere.
It should be noted that the vibrating diaphragm 5 of the application can be to be separately provided the magnetospheric metal simple-substance without magnetic
Film or emtal alloy film, or itself has magnetic metal simple-substance film or emtal alloy film, can be with
Provided with magnetospheric plastic sheeting, as long as meeting to attract each other between vibrating diaphragm 5 and magnet 6, to be born just so as to be formed to have
The requirement of the suction structure of degree.
Preferably, the N poles of magnet 6 are connected in the blind end of matrix 4 towards vibrating diaphragm 5, then the S poles of magnet 6, when sound wave leads to
When crossing 1 inner chamber of housing, attract vibrating diaphragm 5 using the N poles of magnet 6, it is inwardly compressed, so as to compress between magnet 6 and vibrating diaphragm 5
The depth of sound absorption cavity 2, realize the acoustically effective of more low frequency；It should be noted that can also be by the S levels of magnet 6 towards vibrating diaphragm
5, can be according to the setting direction of the required specific regulating magnet 6 of acoustically effective.
In the pipeline silencer of the present embodiment, one or more magnetic attraction anechoic sheets 3 are connected with housing 1, such as Fig. 2
Shown in Fig. 3, each magnetic attraction anechoic sheet 3 may be mounted at the inside of housing 1, can also be arranged on the outside of housing 1, together
Sample, when there are multiple magnetic attraction anechoic sheets 3, a part of magnetic attraction anechoic sheet 3 can be arranged on to the inside of housing 1,
Another part magnetic attraction anechoic sheet 3 is arranged on the outside of housing 1.
When magnetic attraction anechoic sheet 3 is arranged on the inside of housing 1, as shown in Fig. 2 matrix 4 is connected to the inwall of housing 1
On, so as to be contacted by the air-flow in housing 1 with vibrating diaphragm 5, while sound wave contacts with vibrating diaphragm 5, influenceed by suction structure,
In the presence of magnetic force negative stiffness, effect of low-frequency sound absorption is realized；When magnetic attraction anechoic sheet 3 is installed on the outside of housing 1, such as
Shown in Fig. 3, the openend of matrix 4 is connected with the outer wall of housing 1, so as to be contacted by the air-flow in housing 1 with vibrating diaphragm 5, matrix 4
Closed end it is protruding, drive acoustic wave touch vibrating diaphragm 5 to flow through the air-flow in housing 1, realize effect of low-frequency sound absorption.
It is further preferred that when have multiple magnetic attraction anechoic sheets 3 and meanwhile installed in housing 1 internally and/or externally when,
Multiple magnetic attraction anechoic sheets 3 that inside will be arranged on uniformly surround the inwall of housing 1, likewise, by multiple magnetic attractions
Anechoic sheet 3 is uniformly centered around the outer wall of housing 1, and so when sound wave passes through inner cavity of pipe, multiple magnetic attraction anechoic sheets 3 are same
Shi Zuoyong, under the suction structure function of negative stiffness, the soundproof effect being more uniformly distributed is produced around housing 1.
The present embodiment additionally provides a kind of pipe-line system, and the pipe-line system includes pipeline silencer as mentioned, in pipeline
After the pipeline silencer is installed on the pipeline of system, when sound wave passes through pipeline, because the magnetic attraction of the pipeline silencer disappears
Sound piece 3 has the smaller sound absorption cavity 2 of depth, the suction structure of negative stiffness can be utilized to realize that noise elimination acts on, and can ensures pipe
Road structure it is compact, avoid taking excessive space in systems, and when carrying out low frequency noise elimination, soundproof effect is more uniformly distributed surely
It is fixed.
Pipeline silencer described in the present embodiment and it can be realized in same cavity using the pipe-line system of the silencer
Under depth state, there are the acoustic characteristicses of more low frequency, and under same sound absorption frequency range state, the duct attenuation of the present embodiment
Utensil has the smaller sound absorption cavity 2 of depth, so as to realize overall compact structure, specifically see table 1.
The soundproof effect contrast table of the present embodiment pipeline silencer of table 1 and existing pipeline silencer
Pipeline silencer described in the present embodiment and using the silencer pipe-line system when in use, managed when air-flow enters
In road, during by magnetic attraction anechoic sheet 3, vibrating diaphragm 5 in magnetic attraction anechoic sheet 3 with the sound absorption cavity 2 of its behind closing
Air layer form resonator system, system has larger sound absorption near resonant frequency, and its resonant frequency is by unit plane
The Tensity size of the air layer thickness of cavity 2, magnetic attraction structure and film of being absorbed sound after the quality of integrated membrane, film determines, magnetic attraction
Anechoic sheet 3 realizes that noise elimination acts on, while and can allows air-flow by effectively reducing noise in pipeline.
In summary, the pipeline silencer of the present embodiment includes housing 1 and magnetic attraction anechoic sheet 3, and magnetic attraction is eliminated the noise
Piece 3 is installed on housing 1, and a sound absorption cavity 2 is provided with magnetic attraction anechoic sheet 3, suction structure is provided with the cavity 2 that absorbs sound,
Suction structure has negative stiffness, and the inner chamber air of sound absorption cavity 2 has positive rigidity, suction structure and the interior cavity space of sound absorption cavity 2
It is in parallel between gas, so as to by the effect of magnetic force negative stiffness, realize effect of low-frequency sound absorption.The pipeline silencer and existing pipeline
Silencer is compared, and can be realized under same cavity depth state, has the acoustic characteristicses of more low frequency, and in same suction
Under audio frequency range state, the pipeline silencer of the present embodiment has the smaller sound absorption cavity 2 of depth, so as to have overall compact knot
Structure so that there is more excellent acoustically effective using the pipe-line system of pipeline silencer of the present utility model；In addition, this practicality
New pipeline silencer it is simple and compact for structure, repair demolition is very convenient, is easy to safeguard and clears up.
Embodiment of the present utility model in order to example and description for the sake of and provide, and be not exhaustively or will
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Selection and description embodiment are to more preferably illustrate principle and practical application of the present utility model, and make this area
Those of ordinary skill it will be appreciated that the utility model so as to designing the various embodiments with various modifications suitable for special-purpose.
Claims (10)
- A kind of 1. pipeline silencer, it is characterised in that including housing and magnetic attraction anechoic sheet, the magnetic attraction anechoic sheet peace Loaded on a sound absorption cavity is provided with housing, in the magnetic attraction anechoic sheet, suction structure, institute are provided with the sound absorption cavity Stating suction structure has negative stiffness, and the air to absorb sound in cavity has positive rigidity, and the suction structure and the sound absorption are empty It is in parallel between the air of intracavitary.
- 2. pipeline silencer according to claim 1, it is characterised in that the magnetic attraction anechoic sheet includes matrix, shaken Film and magnet, one end of described matrix are connected by vibrating diaphragm with housing, and the magnet is arranged in matrix, the magnet and vibrating diaphragm Between attract each other, to form the suction structure with negative stiffness；The sound absorption cavity is located in matrix, and is arranged on institute State between magnet and vibrating diaphragm.
- 3. pipeline silencer according to claim 2, it is characterised in that one end of described matrix is openend, the other end For blind end, the openend is connected on housing, and the vibrating diaphragm is covered on openend, and the magnet is arranged on blind end It is interior, it is oppositely arranged with the vibrating diaphragm.
- 4. pipeline silencer according to claim 2, it is characterised in that the material of the vibrating diaphragm is plastics, metal simple-substance With one or more of combinations in metal alloy.
- 5. pipeline silencer according to claim 2, it is characterised in that the vibrating diaphragm is provided with magnetosphere.
- 6. according to the pipeline silencer described in claim any one of 3-5, it is characterised in that the housing is connected with one or more The individual magnetic attraction anechoic sheet, one or more magnetic attraction anechoic sheets be respectively arranged in the housing inside and/ It is or outside.
- 7. pipeline silencer according to claim 6, it is characterised in thatWhen the magnetic attraction anechoic sheet is installed on the inside of the housing, described matrix is connected on the inwall of the housing, So as to contacted by the air-flow in the housing with the vibrating diaphragm；When the magnetic attraction anechoic sheet is installed on the outside of the housing, the openend of described matrix and the outer wall of the housing Connection, so as to be contacted by the air-flow in the housing with the vibrating diaphragm, the closed end of described matrix is protruding.
- 8. pipeline silencer according to claim 6, it is characterised in that the dismountable grafting of magnetic attraction anechoic sheet On the housing.
- 9. pipeline silencer according to claim 6, it is characterised in that the magnetic attraction anechoic sheet is fixedly connected on institute State on housing.
- 10. a kind of pipe-line system, it is characterised in that including the pipeline silencer as described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720950083.XU CN207094037U (en) | 2017-08-01 | 2017-08-01 | A kind of pipeline silencer and the pipe-line system with the silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720950083.XU CN207094037U (en) | 2017-08-01 | 2017-08-01 | A kind of pipeline silencer and the pipe-line system with the silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207094037U true CN207094037U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720950083.XU Expired - Fee Related CN207094037U (en) | 2017-08-01 | 2017-08-01 | A kind of pipeline silencer and the pipe-line system with the silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207094037U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327650A (en) * | 2017-08-01 | 2017-11-07 | 北京市劳动保护科学研究所 | A kind of pipeline silencer and the pipe-line system with the silencer |
| CN110428801A (en) * | 2019-07-10 | 2019-11-08 | 北京石油化工学院 | Silencing apparatus for explosion equipment |
-
2017
- 2017-08-01 CN CN201720950083.XU patent/CN207094037U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327650A (en) * | 2017-08-01 | 2017-11-07 | 北京市劳动保护科学研究所 | A kind of pipeline silencer and the pipe-line system with the silencer |
| CN110428801A (en) * | 2019-07-10 | 2019-11-08 | 北京石油化工学院 | Silencing apparatus for explosion equipment |
| CN110428801B (en) * | 2019-07-10 | 2024-06-04 | 北京石油化工学院 | Muffler device for explosive device |
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Granted publication date: 20180313 |