CN202284702U - Fuel gas pipeline silencer - Google Patents
Fuel gas pipeline silencer Download PDFInfo
- Publication number
- CN202284702U CN202284702U CN2011203798617U CN201120379861U CN202284702U CN 202284702 U CN202284702 U CN 202284702U CN 2011203798617 U CN2011203798617 U CN 2011203798617U CN 201120379861 U CN201120379861 U CN 201120379861U CN 202284702 U CN202284702 U CN 202284702U
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- sound
- tracheae
- interface
- gas pipeline
- gas pipe
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Abstract
The utility model discloses a fuel gas pipeline silencer, comprising an interface gas pipe and a silencing gas pipe, wherein one end of the interface gas pipe is connected with a pressure adjuster, another end extends into the silencing gas pipe, the end of another end of the interface gas pipe is a seal port, the interface gas pipe extending into the silencing gas pipe is provided with a first sound absorption hole; one end of the silencing gas pipe is provided with an opening, the opening is sleeved with the interface gas pipe, another end of the silencing gas pipe is connected with a low pressure gas pipe, the end of another end of the silencing gas pipe is provided with a rectification plate, a rectification hole is arranged on the rectification plate; the seal end of the interface gas pipe is fixedly mounted on the rectification plate. The silencer greatly reduces the noise according to the Helmholtz resonance sound absorbing principle and Sabine reverberation theory.
Description
Technical field
The utility model relates to the baffler field, particularly relates to a kind of gas pipeline baffler.
Background technique
As everyone knows, the regular flow of perfect gas can not produce vibration, thereby does not have the formation of noise yet.And in the pressure regulation process of pressurized gas, have two positions can produce strong noise (being noise source).The one, pressure regulator valve valve port place, pressurized gas with subsonic speed through the pressure regulator valve valve port of opening after, gas pressure sharply descends, gas volume expands rapidly; During through valve port and outlet side runner, visible objects such as gas percussion valve port, valve seat, flap and valve interior wall, mutual extrusion, collision, the friction that can bring the miniature air mass of gas; And formation local strong turbulent flow and vortex; Thereby produce the air mass vibration, form noise, and audio frequency is higher.Another noise source (as shown in Figure 3); Be in pressure regulator valve outlet end hole enlargement part, because pressurized gas are very high at pressure regulator valve outlet end gas flow rate after pressure regulation; For making gas in course of conveying, can reach the economic velocity scope; Usually adopt the settling mode of pipeline hole enlargement, and, can form strong turbulent flow at this hole enlargement position from the high velocity air that the pressure regulator valve outlet end ejects.According to the special theoretical gas turbulence characteristic in Pulan, local straight length and the hole enlargement pipeline section of gas after pressure regulation, the mutual extrusion of the miniature air mass of gas, collision, friction are very violent; And formation local strong turbulent flow and vortex; The vibration of generation air mass form strong noise, and audio frequency is lower.In gas pipeline equipment, still there is not effective and practical baffler.
The model utility content
The purpose of the utility model is in order to solve the deficiency of above-mentioned technology, a kind of gas pipeline baffler to be provided.The baffler that the utility model provides, theoretical according to helmholtz resonance sound absorption principle and absorption unit reverberation, can significantly reduce noise.
In order to achieve the above object; The technological scheme that the utility model provided is: a kind of gas pipeline baffler; Comprise interface tracheae and noise reduction tracheae, an end of described interface tracheae connects pressure governor, and the other end extends in the noise reduction tracheae; The end of its other end is for sealing setting, and the said endotracheal interface tracheae of noise reduction that extends to is provided with first sound-absorption hole; One end of said noise reduction tracheae is provided with opening, and said opening sleeve is contained on the interface tracheae, and the other end of noise reduction tracheae connects the low pressure tracheae, and the end of the other end is provided with current plate, and said current plate is provided with rectification hole; Said current plate is packed in sealing on the end of interface tracheae.
Further, said noise reduction tracheae is from interior pipe in the sound-absorbing, sound-absorbing material layer and the sound insulation shell of being disposed with outward, and pipe is provided with second sound-absorption hole in the said sound-absorbing.
Further, be provided with acoustical panel between said current plate and the interface tracheae end, be provided with sound-absorbing material layer between acoustical panel and the current plate, said acoustical panel is provided with the 3rd sound-absorption hole.
Further, the aperture of said first sound-absorption hole is 3-20mm.
Further, the aperture of said second sound-absorption hole is 2-20mm.
Further, the aperture of said the 3rd sound-absorption hole is 2-20mm.
Further, be provided with between pipe and the sound-absorbing material layer in the said sound-absorbing mutual overlap joint corrugated shape, thickness is the metal acoustic board of 0.2-1.0mm.
Further, said sound-absorbing material layer is set to the thread thing packed layer of elastic metallic.
Further, the wire diameter of the thread thing packed layer of said elastic metallic is 0.2-2.0mm.
Adopt technique scheme, the technique effect of the utility model has: the utility model both can improve existing equipment, also can directly use as new connected element, and was practical; The utility model through gas is shunted, rectification, reduction flow velocity reduce generation of noise; The utility model utilizes the strong adsorptive power to noise of aperture, micropore, and utilizes cavity reflection, resonance, effectively eliminates the peak noise of CF, good muffling effect.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the example structure schematic representation of the utility model;
Fig. 3 does not install the structural representation of baffler for the utility model;
Wherein: 1 pressure governor, 2 interface tracheaes, 3 low pressure tracheaes, 4 noise reduction tracheaes, 5 openings, 6 first sound-absorption hole, 7 current plates, 8 rectification hole, pipe in 9 sound-absorbings, 10 sound-absorbing material layers, 11 sound insulation shells, 12 second sound-absorption hole, 13 acoustical panels, 14 the 3rd sound-absorption hole.
Embodiment
Present gas pipeline structure is generally as shown in Figure 3, and combustion gas is delivered in the low pressure tracheae 3 through interface tracheae 2 after pressure governor 1 adjustment, through low pressure tracheae 3 delivery of fuel gas.The utility model promptly is to set up baffler in the link that interface tracheae 2 is delivered to low pressure tracheae 3, plays the effect of noise reduction.
Embodiment below in conjunction with description of drawings the utility model.
A kind of gas pipeline baffler as shown in Figure 1; Comprise interface tracheae 2 and noise reduction tracheae 4, an end of interface tracheae 2 connects pressure governor 1, and the other end extends in the noise reduction tracheae 4; The end of its other end is for sealing setting, and the interface tracheae 2 that extends in the noise reduction tracheae 4 is provided with first sound-absorption hole 6; One end of noise reduction tracheae 4 is provided with opening 5, and opening 5 is sleeved on the interface tracheae 2, and the other end of noise reduction tracheae 4 connects low pressure tracheae 3, and the end of the other end is provided with current plate 7, and current plate 7 is provided with rectification hole 8; Current plate 7 is packed in sealing on the end of interface tracheae 2.
Embodiment as shown in Figure 2; A kind of gas pipeline baffler; Comprise interface tracheae 2 and noise reduction tracheae 4; Noise reduction tracheae 4 from interior be disposed with outward manage 9 in the sound-absorbing, sound-absorbing material layer 10 and sound insulation shell 11, the aperture that pipe 9 is provided with second sound-absorption hole, 12, the second sound-absorption hole 12 in the sound-absorbing is 2-20mm; One end of interface tracheae 2 connects pressure governor 1, and the other end extends in the noise reduction tracheae 4, and the interface tracheae 2 that extends in the noise reduction tracheae 4 is provided with first sound-absorption hole 6; The aperture of first sound-absorption hole 6 is set to 3-20mm, and the end of its other end can only get in noise reduction tracheae 4 chambeies combustion gas through first sound-absorption hole 6 radially for sealing setting; The other end of noise reduction tracheae 4 is equipped with current plate 7, and current plate 7 is provided with rectification hole 8; Current plate 7 is packed in sealing on the end of interface tracheae 2; Be provided with acoustical panel 13 between current plate 7 and interface tracheae 2 ends; Be provided with sound-absorbing material layer 10 between acoustical panel 13 and the current plate 7, the aperture that acoustical panel 13 is provided with the 3rd sound-absorption hole 14, the three sound-absorption hole 14 is 2-20mm.
Sound-absorbing material layer 10 wherein is set to the thread thing packed layer of elastic metallic, and the wire diameter of the thread thing packed layer of elastic metallic is 0.2-2.0mm.For reaching better erasure effect, can also in sound-absorbing, manage 9 and sound-absorbing material layer 10 between be provided with mutual overlap joint corrugated shape, thickness is the metal acoustic board of 0.2-1.0mm.
The noise reduction principle of the utility model:
1, the effect of interface tracheae:
The promptly direct and direct-connected process pipe of pressure governor (or pressure governor dismounting liner plate) of interface tracheae; Its outlet end is closed; Rear portion even tube wall first sound-absorption hole that distributing, total hole area sum is long-pending greater than interface air pipe inlet end pipeline section, plays effects such as gas shunting, rectification, reduction flow velocity, aperture sound-absorbing; Except that interface tracheae internal oscillator is eliminated, part is through aperture reflection-absorption once more for noise source.
2, the effect of pipe in the sound-absorbing
Pipe is processed by steel pipe in the sound-absorbing, is uniform-distribution with second sound-absorption hole on the tube wall, and percent opening is set to about 10%.Its effect is to utilize the aperture reflection to abate the noise, and plays the effect of supporting sound-absorbing material layer simultaneously.
3, the effect of sound-absorbing material layer
Sound-absorbing material layer is to be processed by the loose and closely knit elastic metallic yarn of quality, and its density bullet customizes the frequency noise peak value, has the noise to the audio frequency of certain wave band that is directed against to form resonance, reaches the effect of abating the noise.According to helmholtz resonance sound absorption principle, carry out degree of depth absorption to the frequency noise peak noise, reach the effect of good resistive noise reduction.
4, the effect of current plate
Current plate is thick circular steel plate, and distributing with the center of circle is basic point array rectification hole, plays shunting, rectification, reflection noise, confines the excessive effect of sound absorbing material layer material.
5, the effect of sound insulation shell
Sound insulation shell established technology pipeline outer wall; As can't effectively reduce a certain frequency range noise under special circumstances; To spray corresponding sound-absorbing, soundproof material respectively to sound insulation outer casing inner wall, outer wall,, reach the good result of entire system noise reduction through the form of the reflection of coating sound wave, sound insulation.
6, noise reduction analysis
Air-flow ejects from first sound-absorption hole of interface tracheal wall, gets into one than large space, and itself promptly meets the tactic pattern of resistant noise-reducing.Simultaneously, interface tracheae and sound-absorbing inner core have formed the noise space of a relative closure, itself are exactly a favorable noise resonant cavity, also can play good effect (being that absorption unit reverberation is theoretical) to eliminating noise.
In sum, the utility model is that mechanism according to three kinds of sound-deadening and noise-reducings designs.One, through gas is shunted, rectification, reduction flow velocity reduce generation of noise; Two, utilize the strong adsorptive power to noise of aperture, micropore, effectively reduction sound make an uproar (being helmholtz resonance sound absorption principle); Three, utilize cavity reflection, resonance (being that absorption unit reverberation is theoretical), and the resonance characteristics of special silk system elastic material, the peak noise of elimination CF.
What should explain at last is; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the spirit and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (9)
1. gas pipeline baffler; It is characterized in that: comprise interface tracheae (2) and noise reduction tracheae (4); One end of described interface tracheae (2) connects pressure governor (1); The other end extends in the noise reduction tracheae (4), and the end of its other end is for sealing setting, and the said interface tracheae (2) that extends in the noise reduction tracheae (4) is provided with first sound-absorption hole (6);
One end of said noise reduction tracheae (4) is provided with opening (5); Said opening (5) is sleeved on the interface tracheae (2); The other end of noise reduction tracheae (4) connects low pressure tracheae (3), and the end of the other end is provided with current plate (7), and said current plate (7) is provided with rectification hole (8); Said current plate (7) is packed in sealing on the end of interface tracheae (2).
2. gas pipeline baffler according to claim 1; It is characterized in that: said noise reduction tracheae (4) is managed (9), sound-absorbing material layer (10) and sound insulation shell (11) from interior being disposed with outward in the sound-absorbing, pipe (9) is provided with second sound-absorption hole (12) in the said sound-absorbing.
3. gas pipeline baffler according to claim 1; It is characterized in that: be provided with acoustical panel (13) between said current plate (7) and interface tracheae (2) end; Be provided with sound-absorbing material layer (10) between acoustical panel (13) and the current plate (7), said acoustical panel (13) is provided with the 3rd sound-absorption hole (14).
4. gas pipeline baffler according to claim 1 is characterized in that: the aperture of said first sound-absorption hole (6) is 3-20mm.
5. gas pipeline baffler according to claim 2 is characterized in that: the aperture of said second sound-absorption hole (12) is 2-20mm.
6. gas pipeline baffler according to claim 3 is characterized in that: the aperture of said the 3rd sound-absorption hole (14) is 2-20mm.
7. gas pipeline baffler according to claim 2 is characterized in that: be provided with between pipe (9) and the sound-absorbing material layer (10) in the said sound-absorbing mutual overlap joint corrugated shape, thickness is the metal acoustic board of 0.2-1.0mm.
8. according to claim 2 or 3 described gas pipeline bafflers, it is characterized in that: said sound-absorbing material layer (10) is set to the thread thing packed layer of elastic metallic.
9. gas pipeline baffler according to claim 8 is characterized in that: the wire diameter of the thread thing packed layer of said elastic metallic is 0.2-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203798617U CN202284702U (en) | 2012-03-08 | 2012-03-08 | Fuel gas pipeline silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203798617U CN202284702U (en) | 2012-03-08 | 2012-03-08 | Fuel gas pipeline silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284702U true CN202284702U (en) | 2012-06-27 |
Family
ID=46296223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203798617U Expired - Lifetime CN202284702U (en) | 2012-03-08 | 2012-03-08 | Fuel gas pipeline silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968183A (en) * | 2014-04-08 | 2014-08-06 | 浙江春晖智能控制股份有限公司 | External silencer of fuel gas pipeline |
-
2012
- 2012-03-08 CN CN2011203798617U patent/CN202284702U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968183A (en) * | 2014-04-08 | 2014-08-06 | 浙江春晖智能控制股份有限公司 | External silencer of fuel gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120627 |
|
| CX01 | Expiry of patent term |