CN207049505U - A kind of silencing means of duct noise gas - Google Patents
A kind of silencing means of duct noise gas Download PDFInfo
- Publication number
- CN207049505U CN207049505U CN201720914036.XU CN201720914036U CN207049505U CN 207049505 U CN207049505 U CN 207049505U CN 201720914036 U CN201720914036 U CN 201720914036U CN 207049505 U CN207049505 U CN 207049505U
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- expansion chamber
- acoustical panel
- silencing means
- chamber
- resonator
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Abstract
The utility model discloses a kind of duct noise gas silencing means, it is characterised in that:The silencing means includes noise spectrum test system (101) and pipeline gas silencing means (102), and the noise spectrum test system (101) includes noise source (50), sound level meter (51), high-speed data acquisition card NI (52), computer (53), the time-domain diagram (54) of noise, the frequency domain figure (55) of noise；The pipeline gas silencing means (102) includes the first expansion chamber (1), the second expansion chamber (2), the 3rd expansion chamber (5), the first resonator chamber (3), the second resonator chamber (4), air inlet pipe (7), blast pipe (6) etc..The utility model carries out resistance sound-absorbing using three expansion chambers, two resonator chambers, and resistive sound-absorbing is carried out using porous sound absorbing material, so as to reach the effect eliminated the noise.
Description
Technical field
The silencing means of noise is the utility model is related to, especially suitable for a kind of silencing means of duct noise gas.
Background technology
Muffler is to allow air-flow by the way that but and can prevents or reduced a kind of device of sound transmission, is to eliminate air to move
The important measures of power noise.Muffler can stop the propagation of sound wave, it is allowed to which air-flow is by being the effective work for controlling noise
Tool.Muffler species is a lot, but studies carefully its noise elimination mechanism, it can be divided into six kinds of main types again, i.e. resistive muffler, anti-
Property muffler, impedance complex formula muffler, microperforated panel muffler, aperture muffler and active muffler.
Existing muffler, use impedance composite noise-cancelling theory mostly.Because complicated, weight is big, high-temperature oxydation
Absorb sound filler, high velocity air impact sound absorption filler, and reason, the muffler such as aqueous vapor infiltration sound absorption filler are easy to maintenance frequency occur
Numerous, situations such as soundproof effect is poor, and service life is short.
Utility model content
The utility model is in order to overcome deficiency of the prior art, there is provided a kind of silencing means of duct noise gas.
The utility model is to be achieved through the following technical solutions：
A kind of device of the noise reduction method of duct noise gas, including noise spectrum test system (101) and duct noise
Gas silencing means (102) two parts, duct noise gas silencing means (102) include silencing means housing (20), its feature
It is：The silencing means housing (20) is internally provided with the first acoustical panel (10), the second acoustical panel (11), the 3rd acoustical panel
(12) first baffle (14) and second and the 4th acoustical panel (13), are respectively arranged with the both sides of the silencing means housing (20)
Baffle plate (15), the first expansion chamber (1), first noise reduction are formed between the first baffle (14) and the first acoustical panel (10)
The second expansion chamber (2), the second acoustical panel of institute (11) and the 3rd acoustical panel are formed between plate (10) and the second acoustical panel (11)
(12) the first resonator chamber (3) is formed between, it is common that second is formed between the 3rd acoustical panel (12) and the 4th acoustical panel (13)
Shaken chamber (4), and the 3rd expansion chamber (5) is formed between the 4th acoustical panel (13) and second baffle (15)；Noise spectrum is surveyed
Test system (101) include noise source (50), sound level meter (51), high-speed data acquisition card NI (52), computer (53), noise when
The frequency domain figure (55) of domain figure (54), noise；It is characterized in that：Sound level meter (51) is with high-speed data acquisition card NI (52) using electrical
Connection, high-speed data acquisition card NI (52) is with computer (53) using electric connection.
The silencing means and method of a kind of described duct noise gas, it is characterised in that：First expansion chamber (1)
Air inlet pipe (7) is inside installed, and the air inlet pipe (7) enters the first expansion chamber (1) through first baffle (14)；Described first
First is provided between expansion chamber (1) and the second expansion chamber (2) and enters escape pipe (8), and it is described enter escape pipe (8) expand from first
Open chamber (1) and enter the second expansion chamber (2) through the first acoustical panel (10), in the second expansion chamber (2), the first resonator chamber
(3) second is provided between the second resonator chamber (4) and enters escape pipe (9), and second enters escape pipe (9) from the second expansion chamber
(2) through the second acoustical panel (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13) respectively enter the first resonator chamber (3),
Second resonator chamber (4) and the 3rd expansion chamber (5)；Blast pipe (6) is installed in 3rd expansion chamber (5), and it is described
Blast pipe (6) passes through second baffle (15) from the 3rd expansion chamber (5), reaches the outside of silencing means housing (20).
A kind of silencing means of described duct noise gas, it is characterised in that：In first expansion chamber (1)
Air inlet pipe (7) outer surface has been covered with a diameter of 2mm, spacing is 4mm hole, and scribbles the first porous sound absorbing that thickness is 3mm and apply
Layer (25)；First in the first expansion chamber (1), which enters escape pipe (8) outer surface, has been covered with a diameter of 2mm, spacing for 4mm's
Hole, and scribble the second porous sound absorbing coating (26) that thickness is 3mm；Silencing means housing in the first expansion chamber (1)
(20) inner surface scribbles the 3rd porous sound absorbing coating (27) that thickness is 3mm；The first disengaging in the second expansion chamber (2)
Tracheae (8) outer surface has been covered with a diameter of 2mm, spacing is 4mm hole, and scribbles the 4th porous sound absorbing coating that thickness is 3mm
(28)；The inner surface of silencing means housing (20) in the second expansion chamber (2) scribbles the 5th porous sound absorbing that thickness is 3mm
Coating (29)；Second in the second expansion chamber (2) outer surface for entering escape pipe (9) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 6th porous sound absorbing coating (30) that thickness is 3mm；In the first resonator chamber (3), the second resonator chamber
The outer surface that interior second enters escape pipe (9) has been covered with a diameter of 4mm, the hole that spacing is 8mm；In the 3rd expansion chamber (5)
The second outer surface for entering escape pipe (9) be covered with a diameter of 2mm, spacing be 4mm hole, and scribble thickness be 3mm the 8th
Porous sound absorbing coating (32)；The outer surface of blast pipe (6) in the 3rd expansion chamber (5) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 9th porous sound absorbing coating (33) that thickness is 3mm；Silencing means shell in the 3rd expansion chamber (5)
The inner surface of body (20) scribbles the 7th porous sound absorbing coating (31) that thickness is 3mm；
In the first resonator chamber (3) built with first annular noise reduction acoustic resonator (16), and first annular noise reduction acoustic resonator
(16) it is fixed on by first annular support (18) on the inwall of silencing means housing (20), passes through the first linker (21),
First annular noise reduction acoustic resonator (16) is entered escape pipe (9) with second and connected by two linkers (22)；
In the second resonator chamber (4) built with the second annular noise reduction acoustic resonator (17), and the second annular noise reduction acoustic resonator
(17) it is fixed on by the second ring support (19) on the inwall of silencing means housing (20), passes through third connecting device (23),
Second annular noise reduction acoustic resonator (17) is entered escape pipe (9) with second and connected by four linkers (24).
Compared with prior art, the beneficial effects of the utility model are：The utility model utilizes three expansion chambers, two
Individual resonator chamber carries out resistance sound-absorbing, and resistive sound-absorbing is carried out using sound-absorbing material, when sound wave enter the first resonator chamber (3) and
In second resonator chamber (4), in noise gas with first annular noise reduction acoustic resonator (16), the second annular noise reduction acoustic resonator (17)
Resonant frequency identical noise is decayed because of resonant heating；When noise enters the first expansion chamber (1), the second resonator chamber
(2), in the 3rd resonator chamber (5), because the suddenly change of acoustic impedance so that the noise of a part of frequency is attenuated, a part
Sound energy reflection echogenicity, only a small amount of radiating acoustic energy outlet, so as to reach the effect eliminated the noise.
Brief description of the drawings
Fig. 1 is muffler structure sketch, and Fig. 2 is first and second expansion chamber structure diagram, and Fig. 3 is first and second resonant chamber knot
Structure sketch, Fig. 4 are the 3rd expansion chamber structure diagram, and Fig. 5 is noise spectrum test system, and Fig. 6 is the frequency domain figure of noise, Fig. 7
For a kind of schematic diagram of the device of the noise reduction method of duct noise gas.
1. the first expansion chamber, 2. second expansion chambers, 3. first resonant chambers, 4. second resonant chambers, 5. the 3rd expansion cavities
Room, 6. blast pipes, 7. air inlet pipe, 8. first enter escape pipe, 9. second enter escape pipe, 10. first acoustical panels, 11. second noise reductions
Plate, 12. the 3rd acoustical panels, 13. the 4th acoustical panels, 14. first baffles, 15. second baffles, 16. first ring-type noise reduction resonators,
17. the second ring-type noise reduction resonator, 18. first annular supports, 19. second ring supports, 20. silencer casings, 21. first connect
Logical device, 22. second linkers, 23. third connecting devices, 24. the 4th linkers, 25. first porous sound absorbing coatings, more than 26. second
Hole sound-absorbing coating, 27. the 3rd porous sound absorbing coatings, 28. the 4th porous sound absorbing coatings, 29. the 5th porous sound absorbing coatings, 30.
Six porous sound absorbing coatings, 31. the 7th porous sound absorbing coatings, 32. the 8th porous sound absorbing coatings, 33. the 9th porous sound absorbing coatings,
50. noise source, 51. sound level meters, 52. high-speed data acquisition card NI, 53. computers, the time-domain diagram of 54. noises, the frequency of 55. noises
Domain figure, 101. noise spectrum test systems and 102. duct noise gas silencing means.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
A kind of silencing means of duct noise gas, including noise spectrum test system (101) and duct noise gas disappear
Mixer (102), the duct noise gas silencing means (102) include silencing means housing (20), it is characterised in that：It is described
Silencing means housing (20) is internally provided with the first acoustical panel (10), the second acoustical panel (11), the 3rd acoustical panel (12) and the 4th
Acoustical panel (13), first baffle (14) and second baffle (15) are respectively arranged with the both sides of the silencing means housing (20),
Form the first expansion chamber (1) between the first baffle (14) and the first acoustical panel (10), first acoustical panel (10) and
The second expansion chamber (2), shape between the second acoustical panel of institute (11) and the 3rd acoustical panel (12) are formed between second acoustical panel (11)
Into the first resonator chamber (3), the second resonator chamber (4) is formed between the 3rd acoustical panel (12) and the 4th acoustical panel (13),
The 3rd expansion chamber (5) is formed between 4th acoustical panel (13) and second baffle (15)；Noise spectrum test system (101)
Including noise source (50), sound level meter (51), high-speed data acquisition card NI (52), computer (53), noise time-domain diagram (54), make an uproar
The frequency domain figure (55) of sound；It is characterized in that：Sound level meter (51) is with high-speed data acquisition card NI (52) using electric connection, high speed number
According to capture card NI (52) and computer (53) using electric connection.
A kind of silencing means of described duct noise gas, it is characterised in that：Installed in first expansion chamber (1)
There is air inlet pipe (7), and the air inlet pipe (7) enters the first expansion chamber (1) through first baffle (14)；First expansion cavity
First is provided between room (1) and the second expansion chamber (2) and enters escape pipe (8), and it is described enter escape pipe (8) from the first expansion chamber
(1) enter the second expansion chamber (2) through the first acoustical panel (10), the second expansion chamber (2), the first resonator chamber (3) and
Second is provided between second resonator chamber (4) and enters escape pipe (9), and second enters escape pipe (9) and passed through from the second expansion chamber (2)
Second acoustical panel (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13) respectively enter the first resonator chamber (3), the second resonance
Chamber (4) and the 3rd expansion chamber (5)；Blast pipe (6), and the blast pipe (6) are installed in 3rd expansion chamber (5)
Second baffle (15) is passed through from the 3rd expansion chamber (5), reaches the outside of silencing means housing (20).
A kind of silencing means of described duct noise gas, it is characterised in that：In first expansion chamber (1)
Air inlet pipe (7) outer surface has been covered with a diameter of 2mm, spacing is 4mm hole, and scribbles the first porous sound absorbing that thickness is 3mm and apply
Layer (25)；First in the first expansion chamber (1), which enters escape pipe (8) outer surface, has been covered with a diameter of 2mm, spacing for 4mm's
Hole, and scribble the second porous sound absorbing coating (26) that thickness is 3mm；Silencing means housing in the first expansion chamber (1)
(20) inner surface scribbles the 3rd porous sound absorbing coating (27) that thickness is 3mm；The first disengaging in the second expansion chamber (2)
Tracheae (8) outer surface has been covered with a diameter of 2mm, spacing is 4mm hole, and scribbles the 4th porous sound absorbing coating that thickness is 3mm
(28)；The inner surface of silencing means housing (20) in the second expansion chamber (2) scribbles the 5th porous sound absorbing that thickness is 3mm
Coating (29)；Second in the second expansion chamber (2) outer surface for entering escape pipe (9) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 6th porous sound absorbing coating (30) that thickness is 3mm；In the first resonator chamber (3), the second resonator chamber
The outer surface that interior second enters escape pipe (9) has been covered with a diameter of 4mm, the hole that spacing is 8mm；In the 3rd expansion chamber (5)
The second outer surface for entering escape pipe (9) be covered with a diameter of 2mm, spacing be 4mm hole, and scribble thickness be 3mm the 8th
Porous sound absorbing coating (32)；The outer surface of blast pipe (6) in the 3rd expansion chamber (5) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 9th porous sound absorbing coating (33) that thickness is 3mm；Silencing means shell in the 3rd expansion chamber (5)
The inner surface of body (20) scribbles the 7th porous sound absorbing coating (31) that thickness is 3mm；In the first resonator chamber (3) built with first
Annular noise reduction acoustic resonator (16), and first annular noise reduction acoustic resonator (16) is fixed on silencing means by first annular support (18)
On the inwall of housing (20), by the first linker (21), the second linker (22) by first annular noise reduction acoustic resonator (16) with
Second enters escape pipe (9) connection；
In the second resonator chamber (4) built with the second annular noise reduction acoustic resonator (17), and the second annular noise reduction acoustic resonator
(17) it is fixed on by the second ring support (19) on the inwall of silencing means housing (20), passes through third connecting device (23),
Second annular noise reduction acoustic resonator (17) is entered escape pipe (9) with second and connected by four linkers (24).
A kind of silencing means of described duct noise gas, it is characterised in that：First acoustical panel (10), second disappear
Soundboard (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13), size is identical, the first baffle (14) and second baffle
(15) size is identical.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model requires protection scope
By appended claims and its equivalent thereof.
Claims (4)
1. a kind of pipeline gas silencing means, including noise spectrum test system (101) and pipeline gas silencing means (102),
The pipeline gas silencing means (102) includes silencing means housing (20), it is characterised in that：The silencing means housing (20)
The first acoustical panel (10), the second acoustical panel (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13) are internally provided with, described
The both sides of silencing means housing (20) are respectively arranged with first baffle (14) and second baffle (15), the first baffle (14) and
The first expansion chamber (1) is formed between first acoustical panel (10), between first acoustical panel (10) and the second acoustical panel (11)
The second expansion chamber (2) is formed, the first resonator chamber (3) is formed between the second acoustical panel of institute (11) and the 3rd acoustical panel (12),
The second resonator chamber (4), the 4th acoustical panel (13) are formed between 3rd acoustical panel (12) and the 4th acoustical panel (13)
The 3rd expansion chamber (5) is formed between second baffle (15)；Noise spectrum test system (101) includes noise source (50), sound
Level meter (51), high-speed data acquisition card NI (52), computer (53), the time-domain diagram (54) of noise, the frequency domain figure (55) of noise；Its
It is characterised by：Sound level meter (51) and high-speed data acquisition card NI (52) using being electrically connected with, high-speed data acquisition card NI (52) with
Computer (53) is using electric connection.
A kind of 2. pipeline gas silencing means according to claim 1, it is characterised in that：First expansion chamber (1)
Air inlet pipe (7) is inside installed, and the air inlet pipe (7) enters the first expansion chamber (1) through first baffle (14)；Described first
First is provided between expansion chamber (1) and the second expansion chamber (2) and enters escape pipe (8), and it is described enter escape pipe (8) expand from first
Open chamber (1) and enter the second expansion chamber (2) through the first acoustical panel (10), in the second expansion chamber (2), the first resonator chamber
(3) second is provided between the second resonator chamber (4) and enters escape pipe (9), and second enters escape pipe (9) from the second expansion chamber
(2) through the second acoustical panel (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13) respectively enter the first resonator chamber (3),
Second resonator chamber (4) and the 3rd expansion chamber (5)；Blast pipe (6) is installed in 3rd expansion chamber (5), and it is described
Blast pipe (6) passes through second baffle (15) from the 3rd expansion chamber (5), reaches the outside of silencing means housing (20).
A kind of 3. pipeline gas silencing means according to claim 1, it is characterised in that：In first expansion chamber
(1) air inlet pipe (7) outer surface in has been covered with a diameter of 2mm, spacing is 4mm hole, and it is the first porous of 3mm to scribble thickness
Sound-absorbing coating (25)；First in the first expansion chamber (1) enters that escape pipe (8) outer surface has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the second porous sound absorbing coating (26) that thickness is 3mm；Silencing means shell in the first expansion chamber (1)
The inner surface of body (20) scribbles the 3rd porous sound absorbing coating (27) that thickness is 3mm；First in the second expansion chamber (2) enters
Escape pipe (8) outer surface has been covered with a diameter of 2mm, spacing is 4mm hole, and scribbles the 4th porous sound absorbing that thickness is 3mm and apply
Layer (28)；The inner surface of silencing means housing (20) in the second expansion chamber (2) scribbles the 5th porous suction that thickness is 3mm
Sound coating (29)；Second in the second expansion chamber (2) outer surface for entering escape pipe (9) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 6th porous sound absorbing coating (30) that thickness is 3mm；In the first resonator chamber (3), the second resonator chamber
The outer surface that interior second enters escape pipe (9) has been covered with a diameter of 4mm, the hole that spacing is 8mm；In the 3rd expansion chamber (5)
The second outer surface for entering escape pipe (9) be covered with a diameter of 2mm, spacing be 4mm hole, and scribble thickness be 3mm the 8th
Porous sound absorbing coating (32)；The outer surface of blast pipe (6) in the 3rd expansion chamber (5) has been covered with a diameter of 2mm, spacing is
4mm hole, and scribble the 9th porous sound absorbing coating (33) that thickness is 3mm；Silencing means shell in the 3rd expansion chamber (5)
The inner surface of body (20) scribbles the 7th porous sound absorbing coating (31) that thickness is 3mm；In the first resonator chamber (3) built with first
Annular noise reduction acoustic resonator (16), and first annular noise reduction acoustic resonator (16) is fixed on silencing means by first annular support (18)
On the inwall of housing (20), by the first linker (21), the second linker (22) by first annular noise reduction acoustic resonator (16) with
Second enters escape pipe (9) connection；
In the second resonator chamber (4) built with the second annular noise reduction acoustic resonator (17), and the second annular noise reduction acoustic resonator (17) is logical
Cross the second ring support (19) to be fixed on the inwall of silencing means housing (20), pass through third connecting device (23), the 4th connection
Second annular noise reduction acoustic resonator (17) is entered escape pipe (9) with second and connected by device (24).
A kind of 4. pipeline gas silencing means according to claim 1, it is characterised in that：First acoustical panel (10),
Second acoustical panel (11), the 3rd acoustical panel (12) and the 4th acoustical panel (13), size is identical, the first baffle (14) and second
Baffle plate (15) size is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914036.XU CN207049505U (en) | 2017-07-26 | 2017-07-26 | A kind of silencing means of duct noise gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914036.XU CN207049505U (en) | 2017-07-26 | 2017-07-26 | A kind of silencing means of duct noise gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049505U true CN207049505U (en) | 2018-02-27 |
Family
ID=61497171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720914036.XU Active CN207049505U (en) | 2017-07-26 | 2017-07-26 | A kind of silencing means of duct noise gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178673A (en) * | 2017-07-26 | 2017-09-19 | 安徽理工大学 | The silencing means and method of a kind of duct noise gas |
-
2017
- 2017-07-26 CN CN201720914036.XU patent/CN207049505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178673A (en) * | 2017-07-26 | 2017-09-19 | 安徽理工大学 | The silencing means and method of a kind of duct noise gas |
| CN107178673B (en) * | 2017-07-26 | 2022-11-08 | 安徽理工大学 | Method and device for silencing pipeline noise gas |
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