CN201149145Y - Sound trap silencer - Google Patents
Sound trap silencer Download PDFInfo
- Publication number
- CN201149145Y CN201149145Y CNU2008200784911U CN200820078491U CN201149145Y CN 201149145 Y CN201149145 Y CN 201149145Y CN U2008200784911 U CNU2008200784911 U CN U2008200784911U CN 200820078491 U CN200820078491 U CN 200820078491U CN 201149145 Y CN201149145 Y CN 201149145Y
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- CN
- China
- Prior art keywords
- shift frequency
- inner core
- frequency inner
- columnar
- silencing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000003584 silencer Effects 0.000 title abstract description 11
- 230000030279 gene silencing Effects 0.000 claims abstract description 41
- 238000005452 bending Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 20
- 239000007789 gas Substances 0.000 abstract description 10
- 239000003345 natural gas Substances 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The sound trap silencer is a device applied to natural gas pipelines for reducing noise, and is also suitable for other high-pressure gas conveying pipelines. Comprises a shell, a frequency shift inner cylinder and an impedance inner cylinder. The shell is cylindrical. The method is characterized in that: the two ends of the shell are fixed with an inlet flange and an outlet flange, and the sound trap silencer can be connected to a pipeline for gas delivery by using the flanges at the two ends. An inner lining is fixed on the inner wall of the shell. One end of the circular frequency shift inner cylinder is connected to the inlet flange. A plurality of small holes are distributed on the wall of the frequency shift inner cylinder. The frequency shift inner barrel is arranged in the sound trap silencer as a frequency shift silencer. The top end of the frequency shift inner cylinder is connected with an impedance inner cylinder, and the impedance inner cylinder is fixed in the shell through a support. The effect is as follows: the noise frequency of the frequency shift silencer is shifted to a range beneficial to the absorption of the resistive silencer, and the noise reduction effect is improved. The sound trap silencer can meet the silencing requirement of a natural gas pipeline with high pressure, high flow speed and high flow, and has large silencing quantity.
Description
Technical field
The utility model relates to a kind of silencing apparatus, particularly a kind of natural gas line under high pressure, high flow rate, high flow capacity operating mode device of mute, and it also is applicable to other high-pressure gas medium conveyance conduit simultaneously.
Background technique
The exploitation of current silencing apparatus has obtained more satisfactory effect with application, and the silencing apparatus that uses mainly contains two types at present: a kind of is exhaust silencer, and its principle is to subtract interference noise from sound generating mechanism.Jet noise crest frequency and nozzle diameter are inversely proportional to, i.e. the noise energy of spout radiation will reduce along with diminishing of nozzle diameter, and aperture can be shifted to high frequency from low frequency with the frequency spectrum of exhaust sound.Not only good acoustically effective can be arranged if the aperture is little to a certain degree, jet noise can also be moved on in the insensitive frequency range of people's ear.According to this principle, to use a big spout instead many apertures and replace, the aperture of general aperture is not less than the sixth of macropore diameter, under the condition that keeps same row tolerance, just can reach the purpose that reduces audible sound.The structure difference of silencing apparatus, it is also variant that it subdues volume, and general sound deadening capacity is at 20～30dB (A), but this exhaust silencer all is used for pipe end exhausting silencer noise reduction.
Another kind is an impedance absorption-type silencing apparatus, when it has utilized sound wave to propagate in porous sound-absorbing material, because of friction is converted into heat energy with acoustic energy, thereby reaches the purpose of noise elimination.The acoustic attenuation performance of porous sound-absorbing material is similar to the resistance consume electric power in the circuit, and dissipative muffler has good medium-high frequency acoustic attenuation performance, and is relatively poor to the low frequency acoustic attenuation performance.The structure difference of resistance absorption-type silencing apparatus, its sound deadening capacity differs greatly, and general resistance silencing apparatus can reduce pneumatic noise 10～15dB (A).
At present, above traditional silencing apparatus is mainly used in the end of exhaust duct, can't be applied in natural-gas transfer pipeline, mainly be that traditional material, acoustic wave filter structure and noise reduction problem under the situation of high pressure, high flow rate, high flow capacity do not solve.We study satisfying the silencing apparatus that is suitable on the natural-gas transfer pipeline at this situation.
The model utility content
The purpose of this utility model provides a kind of sound trap silencing apparatus, change acoustic wave filter structure, formation shift frequency silencing apparatus and dissipative muffler behind the silencing apparatus micropore jet are combined, by calculating shift frequency silencing apparatus noise frequency is moved in the scope that helps the dissipative muffler absorption, improve noise reduction.Satisfy the natural gas line noise elimination noise reduction of high pressure, high flow rate, high flow capacity, also can be applicable to the duct attenuation needs that other gas medium is carried simultaneously.Overcome existing silencing apparatus and be not suitable for the deficiency that natural-gas transfer pipeline is eliminated the noise.
The purpose of this utility model is achieved through the following technical solutions: a kind of sound trap silencing apparatus comprises shell, shift frequency inner core and impedance inner core.Shell is cylindric.It is characterized in that: the shell two ends are fixed with suction flange and outlet(discharge) flange, can utilize two end flange that the sound trap silencing apparatus is connected on the pipeline of gas delivery.On the inwall of shell, be fixed with liner.One end of circular shift frequency inner core is connected on the suction flange.Be distributed with a plurality of apertures on the shift frequency inner tube wall.The shift frequency inner core is arranged in the sound trap silencing apparatus as the shift frequency silencing apparatus.The top of shift frequency inner core is connected with the impedance inner core, and the impedance inner core is fixing in the enclosure by support.
Described shift frequency inner core is to connect three columnar shift frequency inner cores by a main shift frequency inner core, and three columnar shift frequency inner cores are communicated with main shift frequency inner core.There is bending shift frequency inner core to be connected between promptly main shift frequency inner core and three the columnar shift frequency inner cores.High-pressure gas medium is divided into three personal shares after by main shift frequency inner core, enters three columnar shift frequency inner cores respectively.
Described three columnar shift frequency inner core tops are fixed with inwardly outstanding taper and rush to summit.Taper is rushed to summit and is welded on the top of three columnar shift frequency inner cores, and taper is rushed to summit and is cone shape, is distributed with a plurality of apertures on the cone, and tapering is between the 90-120 degree.
Described impedance inner core external diameter is identical with three columnar shift frequency inner core external diameters, and impedance inner core one end is fixed on three columnar shift frequency inner core tops, and an end is fixed with taper and keeps away and revolve tail.
During use, suction flange and outlet(discharge) flange are connected on the natural gas line, the gas in the pipeline enters into the shift frequency inner core by suction flange, and the aperture by the shift frequency inner core carries out entering dissipative muffler after shift frequency eliminates the noise.In dissipative muffler, the aperture of liner, resistive big inner core, the little inner core of resistance and sound wave produce friction, subdue acoustic wave energy.
The beneficial effects of the utility model: this sound trap silencing apparatus combines shift frequency inner core, resistance silencing apparatus, shift frequency silencing apparatus noise frequency is moved in the scope that helps the absorption of resistance silencing apparatus, improves noise reduction.This sound trap silencing apparatus internal structure can satisfy the natural gas line noise elimination needs of high pressure, high flow rate, high flow capacity, and sound deadening capacity is big, and when pipeline pressure during at 0.4Mpa, the transmission loss of silencing apparatus upstream and downstream noise can reach 45.2dB; When pipeline pressure during at 0.6Mpa, the transmission loss of silencing apparatus upstream and downstream noise can reach 59.6dB.Overcome existing silencing apparatus and be not suitable for the deficiency that natural-gas transfer pipeline is eliminated the noise.
Description of drawings
Fig. 1 is the utility model sound trap acoustic wave filter structure generalized section.
The cross-sectional structure schematic representation of Fig. 2 Fig. 1.
Among the figure, 1. suction flange, 2. shell, 3. liner, 4. shift frequency inner core, 5. taper 6. supports of rushing to summit, 7. the impedance inner core is 8. kept away and is revolved tail, 9. outlet(discharge) flange.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Embodiment 1: consult accompanying drawing 1.The utility model sound trap silencing apparatus comprises 150 millimeters of shell 2 internal diameters, 1500 millimeters of length, and shell 2 is cylindric.Shell 2 two ends are welded with suction flange 1 and outlet(discharge) flange 9,80 millimeters of the internal diameters of suction flange 1 and outlet(discharge) flange 9.Can utilize two end flange the sound trap silencing apparatus to be connected on the pipeline of gas delivery of 80 millimeters on diameter tail.
The foraminate corrosion resistant plate of distribution that is fixed with thickness and is 5 millimeters on the inwall of shell 2 is made liner 3, and liner 3 is streamlined at the inner wall section of outlet end.Be welded with a circular shift frequency inner core 4 of master at suction flange 1 center.One end of circular main shift frequency inner core 4 is connected on the suction flange 1.Main shift frequency inner core 4 connects 4, three columnar shift frequency inner cores 4 of three columnar shift frequency inner cores and is communicated with main shift frequency inner core 4.There is bending shift frequency inner core to be connected between three columnar shift frequency inner cores 4 and the main shift frequency inner core 4.The center line of three columnar shift frequency inner cores 4 is parallel, is evenly distributed on the same circle.Three columnar shift frequency inner cores 4 are 80 millimeters with the distance of liner 3.High-pressure gas medium is divided into three personal shares after by main shift frequency inner core 4, enters three columnar shift frequency inner cores 4 respectively.Main shift frequency inner core 4 external diameters are 80 millimeters.The external diameter of three columnar shift frequency inner cores 4 is 45 millimeters, and length is 300 millimeters.Main shift frequency inner core 4 and three columnar shift frequency inner cores 4 are to make with the corrosion resistant plate of 2 millimeters thick, are evenly distributed with a plurality of apertures on the wall.The top of three columnar shift frequency inner cores 4 is connected with impedance inner core 7, and impedance inner core 7 is fixed in the shell 2 by support 6.
Impedance inner core 7 external diameters are identical with three columnar shift frequency inner core 4 external diameters, and impedance inner core 7 one ends are fixed on three columnar shift frequency inner core 4 tops, and the other end is fixed with taper and keeps away and revolve tail 8.Impedance inner core 7 connects an end of columnar shift frequency inner core 4, is fixed with taper and rushes to summit 5.Rushing to summit and 5 are cone shape in taper 5 tops that are welded on three columnar shift frequency inner cores 4 of rushing to summit, taper, is distributed with a plurality of apertures on the cone, and tapering is 90 degree.
Carried out field experiment at the Southwest Oil branch company China old station of sun, at gas pressure 0.65MPa, every day, flow was under the identical operating mode of 16 ten thousand steres, after the sound trap silencing apparatus has been installed in the pressure regulator valve back, and its noise decline 17.1dB; Header place noise behind the pressure regulator valve 15.6dB that descended.
Claims (5)
1, a kind of sound trap silencing apparatus, comprise shell (2), shift frequency inner core (4) and impedance inner core (7), shell (2) is cylindric, it is characterized in that: shell (2) two ends are fixed with suction flange (1) and outlet(discharge) flange (9), can utilize two end flange the sound trap silencing apparatus to be connected on the pipeline of gas delivery, on the inwall of shell (2), be fixed with liner (3), one end of circular shift frequency inner core (4) is connected on the suction flange (1), be distributed with a plurality of apertures on shift frequency inner core (4) wall, shift frequency inner core (4) is arranged in the sound trap silencing apparatus as the shift frequency silencing apparatus, the top of shift frequency inner core (4) is connected with impedance inner core (7), and impedance inner core (7) is fixed in the shell (2) by support (6).
2, sound trap silencing apparatus according to claim 1, it is characterized in that: described shift frequency inner core (4) is to connect three columnar shift frequency inner cores (4) by a main shift frequency inner core (4), three columnar shift frequency inner cores (4) are communicated with main shift frequency inner core (4), there is bending shift frequency inner core to be connected between promptly main shift frequency inner core (4) and three the columnar shift frequency inner cores (4), high-pressure gas medium is divided into three personal shares after by main shift frequency inner core (4), enters three columnar shift frequency inner cores (4) respectively.
3, sound trap silencing apparatus according to claim 2, it is characterized in that: described three columnar shift frequency inner cores (4) top is fixed with inwardly outstanding taper rush to summit (5), taper rush to summit (5) be welded on the top of three columnar shift frequency inner cores (4), taper is rushed to summit (5) for cone shape, be distributed with a plurality of apertures on the cone, thereby form resonant cavity with the shift frequency silencing apparatus, tapering is between the 90-120 degree.
4, sound trap silencing apparatus according to claim 2, it is characterized in that: described impedance inner core (7) external diameter is identical with three columnar shift frequency inner cores (4) external diameter, impedance inner core (7) one ends are fixed on three columnar shift frequency inner cores (4) top, and an end is fixed with taper and keeps away and revolve tail (8).
5, according to claim 2 or 3 or 4 described sound trap silencing apparatuss, it is characterized in that: the center line of three columnar shift frequency inner cores (4) is parallel, is evenly distributed on the same circle, and three columnar shift frequency inner cores (4) are 80 millimeters with the distance of liner (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200784911U CN201149145Y (en) | 2008-01-11 | 2008-01-11 | Sound trap silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200784911U CN201149145Y (en) | 2008-01-11 | 2008-01-11 | Sound trap silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149145Y true CN201149145Y (en) | 2008-11-12 |
Family
ID=40116914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200784911U Expired - Lifetime CN201149145Y (en) | 2008-01-11 | 2008-01-11 | Sound trap silencer |
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| Country | Link |
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| CN (1) | CN201149145Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216702A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Built-in general type noise eliminator of natural gas line |
| CN103635234A (en) * | 2011-05-12 | 2014-03-12 | 法克有限公司 | Inert gas suppression system nozzle |
| CN107725902A (en) * | 2018-01-11 | 2018-02-23 | 镇江市星耀智能装备有限公司 | A kind of natural gas line with shockproof inner lining layer |
-
2008
- 2008-01-11 CN CNU2008200784911U patent/CN201149145Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103635234A (en) * | 2011-05-12 | 2014-03-12 | 法克有限公司 | Inert gas suppression system nozzle |
| CN103216702A (en) * | 2012-01-18 | 2013-07-24 | 中国石油天然气股份有限公司 | Built-in general type noise eliminator of natural gas line |
| CN107725902A (en) * | 2018-01-11 | 2018-02-23 | 镇江市星耀智能装备有限公司 | A kind of natural gas line with shockproof inner lining layer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |
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| CX01 | Expiry of patent term |