CN203035349U - Noise enclosure for internal combustion engine - Google Patents
Noise enclosure for internal combustion engine Download PDFInfo
- Publication number
- CN203035349U CN203035349U CN 201320011929 CN201320011929U CN203035349U CN 203035349 U CN203035349 U CN 203035349U CN 201320011929 CN201320011929 CN 201320011929 CN 201320011929 U CN201320011929 U CN 201320011929U CN 203035349 U CN203035349 U CN 203035349U
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- CN
- China
- Prior art keywords
- cover
- combustion engine
- noise
- cover body
- internal combustion
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- 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 - Fee Related
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- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A noise enclosure for an internal combustion engine comprises a cover with a rectangular bottom opening. An access door is arranged in the front of the cover, a handle and an observation window are arranged on the access door, through holes are arranged on the side surface and/or in the rear of the cover, and a silencer extending into the cover is arranged in the through holes. The cover sequentially comprises an aluminum fiber acoustic board layer, an inner wire mesh layer, a wool felt layer, an outer wire mesh layer, a sound-insulation rock wool layer, a wood board layer and an aluminum board layer from inside to outside. By the aid of the technical scheme, the noise enclosure is light in structure, convenient to disassemble and assemble, the cover with the bottom opening is arranged on the ground, the internal combustion engine is arranged in the cover, a chamber with a fine sound insulation performance is built in a local environmental space of the internal combustion engine with strong noise, a silent chamber or room is formed, the noise of the internal combustion engine is greatly reduced, hearing of workers is effectively protected, and a fine working environment is provided for the workers.
Description
Technical field
The utility model belongs to the green environmental protection technique field, relates in particular to a kind of internal-combustion engine sound-insulating cover.
Background technique
Growing along with China's inflammable gas power industry, the inflammable gas power station is as distributed energy, and big relatively unit, high-power station, big electrical network have irreplaceable advantage.But the noise problem as the power internal-combustion engine in power station also is puzzlement technician's problem, and the Modern Internal-Combustion Engine noise level is generally 85～110dB.The inlet and outlet noise is the strongest noise source of internal-combustion engine.The noise of naturally aspirated engine mainly is exhaust sound, can adopt silencing apparatus to be controlled.But to boosting internal combustion engine main be induction noise, the low-frequency noise that deacration produces in suction tude and produce when flowing through gas gate passageway outside the high-frequency vortex noise, cylinder internal cause pressure sharply raises and the dynamic load and the shock wave that produce can cause dither, and propagates into the external world by cylinder liner, body and cylinder head.Water-cooled engine intercepts because water jacket is arranged, and is low than the air-cooled engine noise usually.
The main structure of sound-insulating cover is cover body.When cover body has enough noise insulation factors, could intercept the unlikely unofficial biography of noise of sound source machinery equipment, thereby noise is reduced to below the permission sound level of defined.According to mass law, the structure of cover body should be heavy.Cover body should be considered sound insulation property, also considers to observe convenience, easy access, do not influence in the workshop power supply in normal transport and the room, ventilation etc.At present the sound-insulating cover exterior wall is with sound insulation property material or structure preferably, as brick, concrete, Paper-faced gyp board wall etc., observe part and use sound proof window, the turnover part is used soundproof door or sound absorption passage etc., isolation booth is general more use sound-absorbing material within the walls, as perforated acoustic board furred ceiling, Soft Roll metope and hang suspended absorber etc.
The model utility content
The utility model provides a kind of internal-combustion engine sound-insulating cover of less internal combustion engine operation noise significantly in order to solve deficiency of the prior art.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: the internal-combustion engine sound-insulating cover, comprise the uncovered cover body that is cuboid shape in bottom, the front of cover body is provided with inlet/outlet, inlet/outlet is provided with handle and viewing window, side and/or the back of cover body are provided with through hole, are provided with the silencing apparatus that stretches in the cover body in the through hole.
Described cover body is made of aluminum fiber sound-absorbing flaggy, interior iron wire stratum reticulare, wool carpet veneer, outer iron wire stratum reticulare, sound insulation rock wool layer, wood plies and aluminum layer from inside to outside successively.
Adopt technique scheme; the utility model structure is light and handy, easy accessibility; the cover body setting that the bottom is uncovered on the ground; internal-combustion engine is located in the cover body; in the strong internal-combustion engine local environment space of noise, build the good cell of sound insulation property, form quiet cell or room, reduced the noise of internal-combustion engine widely; protected staff's hearing effectively, for the staff provides a good working environment.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cross sectional representation of cover body in the middle of Fig. 1.
Embodiment
As depicted in figs. 1 and 2, internal-combustion engine sound-insulating cover of the present utility model, comprise the uncovered cover body 1 that is cuboid shape in bottom, the front of cover body 1 is provided with inlet/outlet 2, inlet/outlet 2 is provided with handle 3 and viewing window 4, the side of cover body 1 and/or back are provided with through hole 5, are provided with the silencing apparatus 6 that stretches in the cover body 1 in the through hole 5.
According to the spatial condition at scene, the maintenance of machine and the factors such as dismounting fortune of acoustic hood, cover body 1 structure is light and handy, easy accessibility, cover body 1 general thinner sheet metal, the certain thickness sound-absorbing material of interior trim of adopting of sound insulation.If when cover body 1 vibration is big, be coated with the bigger damping material of some internal loss coefficients at sheet metal outer surface or internal surface, as bituminous grout, asbestos bitumen slurry etc.For preventing its solid-borne sound transmission, vibration isolator can be installed below acoustic hood equipment or lay vibroisolating material.In handling noise process, because the heat dissipation problem of machinery equipment also needs to stay several through holes 5 at cover body 1.At through hole 5 silencing apparatus 6 of certain-lengths is installed, is made the noise insulation factor of the noise reduction of silencing apparatus 6 and cover body 1 suitable, so neither reduce noise reduction effect, can reach the ventilation cooling purpose again.
The utlity model has following characteristics:
(1), cover body 1 is made of the different material of multilayer, has enough noise insulation factors, to cut off the air sonic propagation, reduce reverberation sound in the cover body 1 simultaneously and prevent the transmission of solid-borne noise.
(2), reduce perforate on cover body 1 as far as possible; For wanting perforate, opening area is as far as possible little; Seal approach is taked in slit in the member connecting part of covering wall, to reduce leakage sound.The hole of cover body 1 and slit to its noise reduction particularly high-frequency noise have a significant effect, the maximum noise reduction that leakage area accounts for 10%, 1%, 0.1% cover body 1 is respectively 10,20,30dB.
(3), the heat radiation of sound source machinery equipment in the cover body 1, can cause that temperature raises in the cover body 1, take suitable ventilation and heat measure.
(4), consider the operation of sound source machine (internal-combustion engine) equipment, requirement easy to maintenance.By inlet/outlet 2, viewing window 4, hand hole, removable cover or cover body 1 removable, sectional are set, so that near machine, observe machine runnability go forward side by side line operate and maintenance.
Claims (2)
1. internal-combustion engine sound-insulating cover, it is characterized in that: comprise the uncovered cover body that is cuboid shape in bottom, the front of cover body is provided with inlet/outlet, and inlet/outlet is provided with handle and viewing window, side and/or the back of cover body are provided with through hole, are provided with the silencing apparatus that stretches in the cover body in the through hole.
2. internal-combustion engine sound-insulating cover according to claim 1, it is characterized in that: described cover body is made of aluminum fiber sound-absorbing flaggy, interior iron wire stratum reticulare, wool carpet veneer, outer iron wire stratum reticulare, sound insulation rock wool layer, wood plies and aluminum layer from inside to outside successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011929 CN203035349U (en) | 2013-01-10 | 2013-01-10 | Noise enclosure for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320011929 CN203035349U (en) | 2013-01-10 | 2013-01-10 | Noise enclosure for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035349U true CN203035349U (en) | 2013-07-03 |
Family
ID=48687481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320011929 Expired - Fee Related CN203035349U (en) | 2013-01-10 | 2013-01-10 | Noise enclosure for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065118A (en) * | 2015-07-15 | 2015-11-18 | 芜湖仅一机械有限公司 | Engine casing |
| CN110267510A (en) * | 2019-06-24 | 2019-09-20 | 山东天厚新材料科技有限公司 | A kind of electromagnetic shielding sealing strip |
| CN110561622A (en) * | 2018-06-06 | 2019-12-13 | 山东大学 | bridge type diamond circular saw separates dust suppression and noise reduction device of stone material |
-
2013
- 2013-01-10 CN CN 201320011929 patent/CN203035349U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065118A (en) * | 2015-07-15 | 2015-11-18 | 芜湖仅一机械有限公司 | Engine casing |
| CN110561622A (en) * | 2018-06-06 | 2019-12-13 | 山东大学 | bridge type diamond circular saw separates dust suppression and noise reduction device of stone material |
| CN110561622B (en) * | 2018-06-06 | 2024-04-05 | 山东大学 | Dust suppression and noise reduction device for sawing stone by bridge type diamond circular saw |
| CN110267510A (en) * | 2019-06-24 | 2019-09-20 | 山东天厚新材料科技有限公司 | A kind of electromagnetic shielding sealing strip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20140110 |