CN202791129U - Metal acoustic enclosure for petrochemical device pipeline - Google Patents
Metal acoustic enclosure for petrochemical device pipeline Download PDFInfo
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- CN202791129U CN202791129U CN 201220027532 CN201220027532U CN202791129U CN 202791129 U CN202791129 U CN 202791129U CN 201220027532 CN201220027532 CN 201220027532 CN 201220027532 U CN201220027532 U CN 201220027532U CN 202791129 U CN202791129 U CN 202791129U
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Abstract
The utility model discloses a metal acoustic enclosure for a petrochemical device pipeline, relates to the treatment field of industrial noise, and particularly provides a metal acoustic enclosure for noise treatment of a conveyer pipeline in the petrochemical industry. The metal acoustic enclosure mainly comprises a metal acoustic insulation board, a metal fibrofelt, inorganic fibrous acoustic absorption cotton, a metal guard net, and a damping layer, the damping layer, the metal fibrofelt, and the inorganic fibrous acoustic absorption cotton are successively disposed at the inner wall of the metal acoustic insulation board, the metal guard net is disposed at the external of the metal acoustic insulation board, and the metal guard net and the metal acoustic insulation board are installed at the external of the petrochemical device pipeline. The acoustic enclosure is provided with fireproof and flame retardant explosion-proof performance, strong acoustic insulation capability, and facilitation of detachment during daily maintenance and shutdown maintenance in the petrochemical industry and reinstallation.
Description
Technical field
The utility model relates to man-made noise and administers the field, in particular for the noise abatement acoustic hood of petrochemical industry delivery pipe pipeline.
Background technique
The petrochemical industry pipeline is mainly for delivery of high speed and high pressure gas, liquid and high speed gas-solid mixing material, the on-the-spot noise of some conveying pipeline 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, the high workload time of every day only is 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 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, vibrate outside radiation formation aerodynamic noise.
(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 complexity and produces impact noise in the zone behind this moment valve.
(3) material friction impact noise in the pipeline, material is in course of conveying, and material and material, material and tube wall collision, friction produce mechanical radiated noise.
Existing oil refinerys etc. are equipped with the factory of petrochemical industry line equipment, usually the petrochemical industry pipeline are not taked soundproof measures, make in-plant noise become a large hidden danger.Head it off can be from two aspects, and the one, the petrochemical processing duct noise is improved, major control reduces pressure reduction, velocity of medium, reduces impact and the friction of medium and tube wall generation, thus the generation of reducing noise; On the other hand, then be to consider at pipeline outer wall noise insulation equipment to be installed, such as acoustic hood.
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 install again when requiring maintenance, have fire prevention, flame-proof explosion-proof gets advantage.
The model utility content
The purpose of this utility model is to provide a kind of metal acoustic hood that is applied in the petrochemical equipment pipeline, can reduce noise.
The further purpose of the utility model provides a kind of easy for installation and detachable metal silencing hood for pipeline of petrochemical device of installing again.
For achieving the above object, the utility model adopts following technological scheme:
A kind of metal silencing hood for pipeline of petrochemical device, mainly formed by metal sound insulationg board, metal fiber felt, inorganic fibrous sound absorption cotton, Chain Link Fence and damping layer, it is cotton to be disposed with damping layer, metal fiber felt and inorganic fibrous sound absorption 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 by bolton, and are provided with Stamping Steel Ribbon.
Aperture on the described 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 metal silencing hood for pipeline of petrochemical device, 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 and every methods such as noise reduction such as, interior suction, noise elimination, dampings device pipeline etc. to be carried out the comprehensive regulation outward, the noise of device is effectively controlled.Consider simultaneously petrochemical equipment simple to dismantling to attached configuration, 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 maintenance and install again.
1. the design of fire prevention sound insulationg board: petrochemical equipment requires the fixture shell nonflammable, and the utility model acoustic hood adopts stainless steel or other metallic material as the shell sound insulationg board.The noise insulation factor of sound insulationg board mainly is subjected to the surface density m of material and the impact 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, simultaneously metal sound insulationg board and Chain Link Fence welding forms integral module, 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 inhomogeneous passages or hole are contained in metal fiber felt inside, just being divided into many tiny flame flow after flame enters metal fiber felt inside is extinguished, in addition because metal fiber felt has absorbed a large amount of heats, because heat is inadequate, so that inflammable matter does not reach the needed temperature of burning (spontaneous combustion), the natural combustion process just can't be proceeded, and can only stop.Metal fiber felt adopts the Stainless Steel Fibre felt in the utility model, reaches the flame-proof explosion-proof performance by design porosity ratio and aperture.Metal fiber felt also has preferably sound absorbing capabilities 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: model utility is for adopting the sound absorption of inorganic non-metallic fiber cotton as sound-absorbing material, its Main Function is when sound wave enters 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 namely avoids occurring reverberation.Inorganic Non-metallic Materials has fireproof performance simultaneously, can satisfy fixture to the requirement of fireproof performance.The sound-absorbing material Specifeca tion speeification is 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. again installation module design: acoustic hood is comprised of secondary two lobe formula modules, make things convenient for petrochemical equipment dismounting and again installation when maintenance, install by 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%, and it is whole to improve the acoustic hood overall tightness.
Description of drawings
Fig. 1 is the utility model one secondary petrochemical equipment pipeline acoustic hood generalized section.
Fig. 2 is the utility model petrochemical equipment pipeline acoustic hood cross sectional representation.
Fig. 3 is connection diagram between the utility model petrochemical equipment pipeline acoustic hood.
1-sound insulationg board wherein; The 2-damping material; 3-Stainless Steel Fibre felt; The 4-Stamping Steel Ribbon; 5-fiber sound-absorbing material; The 6-metal protection draws in the net; 7-petrochemical industry pipeline, valve; The 8-O RunddichtringO; The 9-acoustic hood.
Specific implementation method
By reference to the accompanying drawings the utility model is further set forth:
Embodiment 1
As shown in Figure 1 to Figure 3, choose thick 316 stainless steels of 1.5mm as sound insulationg board 1, become the semicircle shell by 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.Then at the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 20 μ m, and porosity ratio is 85%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add glaze fiber sound-absorbing 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 soundproof tube casing.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 by 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
As shown in Figure 1 to Figure 3, choose the thick galvanized sheet iron of 2mm as sound insulationg board 1, become the semicircle shell by 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.Then at the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 20 μ m, and porosity ratio is 85%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add dress fiber sound-absorbing 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 soundproof tube casing, the metal protection punching net is struck out half bend pipe shell, form whole semi-circular tube module by welding method and sound insulationg board shell.Acoustic hood 9 when mounted up and down two secondary semi-circular tubes snugly fit on the petrochemical equipment pipeline by bolt, and in the junction Stamping Steel Ribbon 4 is installed, 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 by 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
As shown in Figure 1 to Figure 3, choose the thick galvanized sheet iron of 2mm as sound insulationg board 1, become semicircle bend pipe shell by 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.Then at the inner wall of tube shell 316 Stainless Steel Fibre felts 3 of mating formation, the aperture is 25 μ m, and porosity ratio is 80%, and flame retardant property is good.After Stainless Steel Fibre felt 3 installs, then add dress fiber sound-absorbing 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 soundproof tube casing, the metal protection punching net is struck out half bend pipe shell, form whole half bend pipe module by welding method and sound insulationg board shell.Acoustic hood 9 when mounted up and down two secondary semi-circular tubes snugly fit on the petrochemical equipment pipeline by bolt, and in the junction Stamping Steel Ribbon 4 is installed, 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 by 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. metal silencing hood for pipeline of petrochemical device, be characterised in that: described metal silencing hood for pipeline of petrochemical device mainly is comprised of metal sound insulationg board, metal fiber felt, inorganic fibrous sound absorption cotton, Chain Link Fence and damping layer, it is cotton to be disposed with damping layer, metal fiber felt and inorganic fibrous sound absorption 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. metal silencing hood for pipeline of petrochemical device according to claim 1, it is characterized in that: described metal acoustic hood is that two lobe acoustic hood fixed seal connections form.
3. metal silencing hood for pipeline of petrochemical device according to claim 2 is characterized in that: described two lobe acoustic hood fixed seal connections are to install by bolton, and are provided with Stamping Steel Ribbon.
4. metal silencing hood for pipeline of petrochemical device according to claim 1, it is characterized in that: the aperture on the described metal fiber felt is 20 ~ 25 μ m, porosity ratio is 80 % ~ 85 %.
5. the described metal silencing hood for pipeline of petrochemical device of any one according to 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 |
|---|---|---|---|
| CN 201220027532 CN202791129U (en) | 2012-01-20 | 2012-01-20 | Metal acoustic enclosure for petrochemical device pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220027532 CN202791129U (en) | 2012-01-20 | 2012-01-20 | Metal acoustic enclosure for petrochemical device pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202791129U true CN202791129U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220027532 Expired - Lifetime CN202791129U (en) | 2012-01-20 | 2012-01-20 | Metal acoustic enclosure for petrochemical device pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN202791129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299379A (en) * | 2014-06-10 | 2016-02-03 | 上海梅山钢铁股份有限公司 | Pipeline sound insulation device and method |
| GB2570511A (en) * | 2018-01-30 | 2019-07-31 | Industrial Noise & Vibration Centre Ltd | Pipeline noise control system |
-
2012
- 2012-01-20 CN CN 201220027532 patent/CN202791129U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299379A (en) * | 2014-06-10 | 2016-02-03 | 上海梅山钢铁股份有限公司 | Pipeline sound insulation device and method |
| GB2570511A (en) * | 2018-01-30 | 2019-07-31 | Industrial Noise & Vibration Centre Ltd | Pipeline noise control system |
| GB2570511B (en) * | 2018-01-30 | 2020-08-26 | Industrial Noise & Vibration Centre Ltd | Pipeline noise control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |