CN102563283A - Metal silencing hood for pipeline of petrochemical device - Google Patents
Metal silencing hood for pipeline of petrochemical device Download PDFInfo
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- CN102563283A CN102563283A CN2012100188149A CN201210018814A CN102563283A CN 102563283 A CN102563283 A CN 102563283A CN 2012100188149 A CN2012100188149 A CN 2012100188149A CN 201210018814 A CN201210018814 A CN 201210018814A CN 102563283 A CN102563283 A CN 102563283A
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- petrochemical equipment
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Abstract
The invention discloses a metal silencing hood for a pipeline of a petrochemical device, which relates to the field of industrial noise abatement, in particular to a metal silencing hood for abating noise of delivery pipelines in the petrochemical industry. The metal silencing hood mainly comprises a metal sound insulating board, a metal fiber felt, inorganic fibrous sound-absorbing cotton, a metal protective net and a damping layer, wherein the damping layer, the metal fiber felt and the inorganic fibrous sound-absorbing cotton are sequentially arranged on the inner wall of the metal sound insulating board, and the metal protective net is arranged outside the metal sound insulating board and mounted outside the pipeline of the petrochemical device together with the metal sound insulating board. The metal silencing hood has fireproof, flame-retardant and explosion-proof performances and quite high sound insulation, can be conveniently detached in daily maintenance and outage for maintenance in the petrochemical industry, and can be conveniently reinstalled.
Description
Technical field
The present invention relates to man-made noise and administer the field, in particular for the noise abatement acoustic hood of petrochemical industry delivery pipe pipeline.
Background technique
The petrochemical industry pipeline is mainly used in carries high speed and high pressure gas, liquid and high speed gas-solid mixture material; The on-the-spot noise of some carrier pipe line can be up to more than the 125dB (A); And country's " industrial enterprise's noise sanitary standard " regulation; Existing newly-built, enlarging, reconstruction enterprise staff are under 94dB (A) environment, and the high workload time of every day is merely 1 hour, and the working zone level of noise is the highest must not be higher than 115dB (A).Therefore, healthy for the operator that keep the scene intact, be necessary the pipeline noise is administered.
Because the structure and the performance analysis of petrochemical equipment, the device pipeline can produce the noise of high sound intensity like this, main cause have following some:
Also can produce noise when (1) high-pressure liquid transmits in pipeline, be mainly the turbulent flow that fluid forms and make the tube wall vibration in flow process, vibration forms aerodynamic noise to external radiation.
(2) pipeline valve noise, when there is sizable pressure ratio the valve both sides, the Mach number of outlet port air-flow reaches 1, and turbulent flow interacts in the airflow field of complicacy and produces impact noise in the zone behind this moment valve.
(3) material friction impact noise in the pipeline, material are in course of conveying, and material and material, material and tube wall collide, friction-produced machinery radiated noise.
Existing oil refinerys etc. are equipped with the factory of petrochemical industry line equipment, the petrochemical industry pipeline are not taked soundproof measures usually, make in-plant noise become a big hidden danger.Head it off can be started with from two aspects, and the one, the petrochemical processing duct noise is improved, major control reduces pressure reduction, velocity of medium, reduces impact and friction that medium and tube wall take place, thus the generation of reducing noise; On the other hand, then be to consider noise insulation equipment to be installed, like acoustic hood at pipeline outer wall.
In addition; Because the petrochemical equipment pipeline exists daily and shuts down maintenance; And require attached match equipment to have fire prevention, flame-proof explosion-proof characteristics; Therefore petrochemical equipment pipeline acoustic hood not only has the anti-acoustic capability excellence, but also detachably installs when requiring maintenance again, has fire prevention, flame-proof explosion-proof gets advantage.
Summary of the invention
The object of the present invention is to provide a kind of metal acoustic hood that is applied in the petrochemical equipment pipeline, can reduce noise.
Further aim of the present invention provides a kind of easy for installation and detachable petrochemical equipment pipeline metal acoustic hood of installing again.
For achieving the above object, the present invention adopts following technological scheme:
A kind of petrochemical equipment pipeline metal acoustic hood; Mainly form by metal sound insulationg board, metal fiber felt, inorganic fibrous sound absorption cotton, Chain Link Fence and damping layer; Be disposed with damping layer, metal fiber felt and inorganic fibrous sound absorption cotton at metal sound insulationg board inwall; Chain Link Fence is arranged on outside the metal sound insulationg board, outside the metal sound insulationg board is installed in the petrochemical equipment pipeline.
Described metal acoustic hood is that two lobe acoustic hood fixed seal connections form.
Described two lobe acoustic hood fixed seal connections are to install through bolton, and are provided with Stamping Steel Ribbon.
Aperture on the said metal fiber felt is 20 ~ 25 μ m, and porosity ratio is 80% ~ 85%.
Described metal acoustic hood is straight tube, bend pipe or three-way pipe.
A kind of petrochemical equipment pipeline metal acoustic hood; According to Principles of Acoustics; Main Principles of Acoustics design and the making acoustic hoods such as sound insulation, sound absorption, resonance of adopting; Use methods such as noise reduction such as outer separated, interior suction, noise elimination, damping that device pipeline etc. is carried out the comprehensive regulation, the noise of device is effectively controlled.Consider simultaneously petrochemical equipment simple to attached configuration to dismantling, can be in the requirement of installation, fire prevention, flame-proof explosion-proof characteristics, the metal acoustic hood has following advantages: main material adopts metallic material during the sound insulationg board design, and it is nonflammable to prevent fires; In the acoustic hood metal fiber felt is installed in addition, this kind material has the advantage of sound absorption, fire prevention, flame-proof explosion-proof; Adopt the design of two valve structures, dismantle during convenient the maintenance and install again.
1. the design of fire prevention sound insulationg board: petrochemical equipment requires the fixture shell nonflammable, and acoustic hood of the present invention adopts stainless steel or other metallic material as the shell sound insulationg board.The noise insulation factor of sound insulationg board mainly receives the surface density m of material and the influence of sound wave frequency f (the engineering calculation frequency is 500Hz); Therefore; Adopt metallic material not only prevent fires as outer sound insulationg board and outward appearance firm, and the metallic material surface density is excellent than high sound insulation property, metal sound insulationg board and Chain Link Fence weld the formation integral module simultaneously; Sound-absorbing material between metal shell and the protective net is wrapped in inside, forms an integral module.
2. the design of flame-proof explosion-proof metal fiber felt: many tiny, even or uneven passages or hole are contained in metal fiber felt inside; After flame gets into metal fiber felt inside, just being divided into many tiny flame flow is extinguished; Because metal fiber felt has absorbed great amount of heat,, make inflammable matter not reach the needed temperature of burning (spontaneous combustion) in addition because heat is not enough; The natural combustion process just can't be proceeded, and can only stop.Metal fiber felt adopts the Stainless Steel Fibre felt among the present invention, reaches the flame-proof explosion-proof performance through design porosity ratio and aperture.Metal fiber felt also has sound absorbing capabilities preferably in addition, and particularly in the medium-high frequency section, the acoustic hood overall performance also can be improved after installing metal fiber felt additional in acoustic hood inside.
3. sound-absorbing material design: invent to adopting inorganic non-metallic fiber sound cotton as sound-absorbing material; It mainly acts on is when sound wave goes into to inject material internal; Acoustic energy is changed into heat energy by the internal loss of sound absorbing material and dissipates, and reduces reflection and promptly avoids occurring reverberation.Inorganic Non-metallic Materials has fireproof performance simultaneously, can satisfy the requirement of fixture to fireproof performance.The sound-absorbing material Specifeca tion speeification is an average sound absorption coefficient in the acoustic hood, during design consideration is comprised sound-absorbing material thickness, density kg/m
3With the material intrinsic performance, improve the sound-absorbing material average sound absorption coefficient.
4. installed module design again: acoustic hood is made up of secondary two lobe formula modules; Make things convenient for petrochemical equipment dismounting and installation again when maintenance; Install through bolton between two lobe acoustic hoods and two sections acoustic hoods during installation; And be furnished with Stamping Steel Ribbon and reduce cover body leakage sound rate, the whole leakage sound of acoustic hood rate is controlled at below 1%, it is whole to improve the acoustic hood overall tightness.
Description of drawings
Fig. 1 is the present invention's one secondary petrochemical equipment pipeline acoustic hood generalized section.
Fig. 2 is a petrochemical equipment pipeline acoustic hood cross sectional representation of the present invention.
Fig. 3 connects schematic representation between the petrochemical equipment pipeline acoustic hood of the present invention.
1-sound insulationg board wherein; The 2-damping material; 3-Stainless Steel Fibre felt; The 4-Stamping Steel Ribbon; 5-fiber sound material; The 6-metal protection draws in the net; 7-petrochemical industry pipeline, valve; The 8-O RunddichtringO; The 9-acoustic hood.
The practical implementation method
In conjunction with accompanying drawing the present invention is further set forth:
Embodiment 1
To shown in Figure 3, choose thick 316 stainless steels of 1.5mm as sound insulationg board 1 like Fig. 1, become the semicircle shell through punch process, the thick 316 surface stainless steel density of 1.5mm are 11.7g/cm
2, so its noise insulation factor is about 24.3dB (A).Then apply damping material 2 at stainless steel sound insulationg board 1 inwall, damping layer thickness is about 0.5mm.At the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 20 μ m then, and porosity ratio is 85%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add glaze fiber sound material 5, the about 50mm of glass fibre sound-absorbing material thickness, density is 200g/cm
3, average sound absorption coefficient is 0.75.For sound-absorbing material and fibrofelt are fixed in the sound insulation shell.Acoustic hood 9 is enclosed within on the petrochemical equipment pipeline when mounted, and in the junction Stamping Steel Ribbon 4 is installed, and guarantees that whole leakage sound rate is less than 1%.Because single hop acoustic hood limited length, for the multistage acoustic hood is formed an integral body, acoustic hood 9 and another section acoustic hood 9 closely are connected through bolt, and seam crossing is installed sound insulation Stamping Steel Ribbon O RunddichtringO 8, and acoustic hood integral body noise reduction is about 30 dB (A).
Embodiment 2
To shown in Figure 3, choose the thick galvanized sheet iron of 2mm as sound insulationg board 1 like Fig. 1, become the semicircle shell through punch process, the thick galvanized sheet iron surface density of 2mm is 15.6g/cm
2, so its noise insulation factor is about 30dB (A).Then apply damping material 2 at stainless steel sound insulationg board 1 inwall, damping layer thickness is about 1mm.At the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 20 μ m then, and porosity ratio is 85%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add dress fiber sound material 5 rock wools, the about 60mm of rock wool sound-absorbing material thickness, density is 240g/cm
3, average sound absorption coefficient is 0.80.For sound-absorbing material and fibrofelt are fixed in the sound insulation shell, metal protection punching net 6 is struck out half bend pipe shell, form whole semicircle tube module through welding method and sound insulationg board shell.Acoustic hood 9 when mounted up and down two secondary semicircle pipes snugly fit on the petrochemical equipment pipeline through bolt, and Stamping Steel Ribbon 4 is installed in the junction, guarantee that whole leakage sound rate is less than 1%.Because single hop acoustic hood limited length, for the multistage acoustic hood is formed an integral body, acoustic hood 9 and another section acoustic hood 9 closely are connected through bolt, and seam crossing is installed sound insulation Stamping Steel Ribbon O RunddichtringO 8, and acoustic hood integral body noise reduction is about 35dB (A).
Embodiment 3
To shown in Figure 3, choose the thick galvanized sheet iron of 2mm as sound insulationg board 1 like Fig. 1, become semicircle bend pipe shell through punch process, the thick galvanized sheet iron surface density of 2mm is 15.6g/cm
2, so its noise insulation factor is about 30dB (A).Then apply damping material 2 at stainless steel sound insulationg board 1 inwall, damping layer thickness is about 1mm.At the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 25 μ m then, and porosity ratio is 80%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add dress fiber sound material 5 rock wools, the about 60mm of rock wool sound-absorbing material thickness, density is 240g/cm
3, average sound absorption coefficient is 0.80.For sound-absorbing material and fibrofelt are fixed in the sound insulation shell, metal protection punching net 6 is struck out half bend pipe shell, form whole half bend pipe module through welding method and sound insulationg board shell.Acoustic hood 9 when mounted up and down two secondary semicircle pipes snugly fit on the petrochemical equipment pipeline through bolt, and Stamping Steel Ribbon 4 is installed in the junction, guarantee that whole leakage sound rate is less than 1%.Because single hop acoustic hood 9 limited length, for the multistage acoustic hood is formed an integral body, acoustic hood 9 and another section acoustic hood 9 closely are connected through bolt, and seam crossing is installed sound insulation Stamping Steel Ribbon O RunddichtringO 8, and acoustic hood integral body noise reduction is about 35dB (A).
Claims (5)
1. petrochemical equipment pipeline metal acoustic hood; Be characterised in that: described petrochemical equipment pipeline metal acoustic hood mainly is made up of metal sound insulationg board, metal fiber felt, inorganic fibrous sound absorption cotton, Chain Link Fence and damping layer; Be disposed with damping layer, metal fiber felt and inorganic fibrous sound absorption cotton at metal sound insulationg board inwall; Chain Link Fence is arranged on outside the metal sound insulationg board, outside the metal sound insulationg board is installed in the petrochemical equipment pipeline.
2. petrochemical equipment pipeline metal acoustic hood according to claim 1 is characterized in that: described metal acoustic hood is that two lobe acoustic hood fixed seal connections form.
3. petrochemical equipment pipeline metal acoustic hood according to claim 2 is characterized in that: described two lobe acoustic hood fixed seal connections are to install through bolton, and are provided with Stamping Steel Ribbon.
4. petrochemical equipment pipeline metal acoustic hood according to claim 1 is characterized in that: the aperture on the said metal fiber felt is 20 ~ 25 μ m, and porosity ratio is 80 % ~ 85 %.
5. according to any described petrochemical equipment pipeline metal acoustic hood of claim 1-4, it is characterized in that: described metal acoustic hood is straight tube, bend pipe or three-way pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100188149A CN102563283A (en) | 2012-01-20 | 2012-01-20 | Metal silencing hood for pipeline of petrochemical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100188149A CN102563283A (en) | 2012-01-20 | 2012-01-20 | Metal silencing hood for pipeline of petrochemical device |
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| Publication Number | Publication Date |
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| CN102563283A true CN102563283A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100188149A Pending CN102563283A (en) | 2012-01-20 | 2012-01-20 | Metal silencing hood for pipeline of petrochemical device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654753A (en) * | 2016-07-26 | 2018-02-02 | 福州鑫泉声学环保工程有限公司 | A kind of moistureproof fire resisting environmental protection sound insulation tube |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207029A1 (en) * | 1992-03-06 | 1993-09-16 | Motan Verfahrenstechnik | Conveyor pipe for loose bulk materials with sound damping - has twin-shelled body with interlining of plastics material for acoustic insulation. |
| CN2320408Y (en) * | 1997-06-09 | 1999-05-26 | 沈阳昌普科技发展有限公司 | Fibre metal felt |
| CN1759903A (en) * | 2004-09-17 | 2006-04-19 | H.Dservice株式会社 | Coverings for preventing flammabile fuel from flying apart |
| CN201106731Y (en) * | 2007-10-24 | 2008-08-27 | 濮阳市元光科技有限公司 | Pipeline silencer |
| CN201159360Y (en) * | 2008-02-25 | 2008-12-03 | 宝山钢铁股份有限公司 | Denoising pipe |
-
2012
- 2012-01-20 CN CN2012100188149A patent/CN102563283A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207029A1 (en) * | 1992-03-06 | 1993-09-16 | Motan Verfahrenstechnik | Conveyor pipe for loose bulk materials with sound damping - has twin-shelled body with interlining of plastics material for acoustic insulation. |
| CN2320408Y (en) * | 1997-06-09 | 1999-05-26 | 沈阳昌普科技发展有限公司 | Fibre metal felt |
| CN1759903A (en) * | 2004-09-17 | 2006-04-19 | H.Dservice株式会社 | Coverings for preventing flammabile fuel from flying apart |
| CN201106731Y (en) * | 2007-10-24 | 2008-08-27 | 濮阳市元光科技有限公司 | Pipeline silencer |
| CN201159360Y (en) * | 2008-02-25 | 2008-12-03 | 宝山钢铁股份有限公司 | Denoising pipe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654753A (en) * | 2016-07-26 | 2018-02-02 | 福州鑫泉声学环保工程有限公司 | A kind of moistureproof fire resisting environmental protection sound insulation tube |
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Application publication date: 20120711 |