CN202073641U - Sound insulation cover for low-noise machine unit - Google Patents
Sound insulation cover for low-noise machine unit Download PDFInfo
- Publication number
- CN202073641U CN202073641U CN2011201700065U CN201120170006U CN202073641U CN 202073641 U CN202073641 U CN 202073641U CN 2011201700065 U CN2011201700065 U CN 2011201700065U CN 201120170006 U CN201120170006 U CN 201120170006U CN 202073641 U CN202073641 U CN 202073641U
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- sound insulation
- acoustic hood
- insulation cover
- cuboid
- noise
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model relates to a sound insulation cover for a low-noise machine unit, which comprises a cuboid sound insulation cover formed by a full metal sheet folding structure and is characterized in that an inner lateral wall of the cuboid sound insulation cover is provided with high-efficient sound-absorbing materials and metal micropunch acoustic board sequentially. Air inlet channels are arranged on circumferential side of the cuboid sound insulation cover, a side door is respectively arranged on two sides of the middle of the cuboid sound insulation cover, a partition board for dividing the sound insulation cover into a machine unit accommodating chamber and an exhausting chamber is arranged in the inner cavity of the rear portion of the sound insulation cover, a through hole for an exhausting pipe of the machine unit to penetrate through is arranged on the partition board, an exhausting through hole is arranged on top of the exhausting chamber, and an underframe assembly is arranged at the bottom of the cuboid sound insulation cover. The sound insulation cover is simple in structure and reasonable in design, has good sound insulation effects, is capable of effectively reducing air inlet noise, exhausting noise, burning noise and machinery noise, in accordance with national policies and wide in market prospects, and not only has good economic benefits, but also can obtain remarkable social benefits.
Description
Technical field
The utility model relates to power station sound insulation technical field, especially a kind of low noise unit acoustic hood.
Background technique
The noise of diesel engine unit mainly contains four parts: induction noise, exhaust sound, combustion noise and diesel oil mechanical noise, the noise of generator mainly contains mechanical noise and electromagnetic noise, because the noise of diesel generating set itself is up to 105dB(A), and almost be the full range band.The air inlet of diesel engine, exhaust sound are because the aerodynamic noise that the vibration of air-flow produces, its main frequency scope is 0.05-5kHz, based on the medium and low frequency composition, and combustion noise and mechanical noise, its intensity and air inlet, exhaust sound are suitable, but radio-frequency component is strong slightly, therefore diesel generating set being carried out sound insulation and noise reducing is a high-leveled and difficult job, traditional acoustic hood soundproof effect is poor, particularly on the air inlet system and exhaust system of sound-insulating cover, generally all the leakage sound can be arranged.
Summary of the invention
The utility model has been introduced a kind of low noise unit acoustic hood, and this acoustic hood not only has the dustproof and rainproof protective action, and has good soundproof effect, can carry out sound insulation and noise reducing to the noise of diesel generating set.
The technical solution of the utility model is: a kind of low noise unit acoustic hood, comprise the cuboid acoustic hood that adopts full-metallic thin plate flanging structure to make, it is characterized in that: the madial wall of described cuboid acoustic hood is disposed with efficient sound absorbing material and metal Micropunch Acoustic Board, the all sides of described cuboid acoustic hood are provided with gas-entered passageway, its both sides, middle part are respectively arranged with side door, its rear portion inner chamber is provided with acoustic hood is divided into the dividing plate that unit is laid chamber and exhaust chamber, described dividing plate is provided with the through hole that is used to wear the unit outlet pipe, described exhaust chamber top is provided with exhaust hole, and the bottom side of described cuboid acoustic hood is provided with the underframe assembly.
Be provided with fuel tank in the above-mentioned underframe assembly.
Above-mentioned side door installed inside has efficient sound absorbing material and metal Micropunch Acoustic Board, and described side door perimembranous is provided with rubber door envelope.
The impedance complex formula silencing apparatus that is connected with the generator set outlet pipe is installed in the above-mentioned exhaust chamber.
The both sides of above-mentioned cuboid acoustic hood are provided with the labyrinth type air intake road, and its front side portion is provided with efficient variable cross section formula air exhaust channel.
The inboard, one end of above-mentioned cuboid acoustic hood is provided with the unit electric appliance control box.
The utility model has reasonably designed the air inlet duct and the air exhaust channel of unit, the left and right side that is unit respectively is provided with the labyrinth type air intake road, the front portion of unit is provided with efficient variable cross section formula air exhaust channel, has both solved the ventilation and heat of unit, again the effusion of reducing noise effectively, has good noise elimination effect, can subdue electromagnetic noise and mechanical noise effectively, meet the national policy orientation, its market prospects are very wide, not only have considerable economic, and can obtain remarkable social benefit.
Description of drawings
Fig. 1 is an embodiment's of the present utility model main TV structure schematic representation.
Fig. 2 is an embodiment's of the present utility model left TV structure schematic representation.
Fig. 3 is that embodiment's of the present utility model master looks the sectional structure schematic representation.
Fig. 4 is that the sectional structure schematic representation is looked on an embodiment's of the present utility model left side.
Among the figure: 1 is efficient sound absorbing material, and 2 is the metal Micropunch Acoustic Board, and 3 is gas-entered passageway, and 4 is side door, 5 is that group is laid chamber, and 6 is exhaust chamber, and 7 is dividing plate, and 8 is through hole, 9 is exhaust hole, and 10 is the underframe assembly, and 11 is fuel tank, and 12 is the unit outlet pipe, 13 is impedance complex formula silencing apparatus, and 14 is the labyrinth type air intake road, and 15 is efficient variable cross section formula air exhaust channel, 16 is control box, and 17 is tank filler sleeve, and 18 is door-hinge, 19 is the control box form, and 20 is unit, and 21 is metal shell.
Embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, embodiment cited below particularly, and conjunction with figs. are described in detail below.
Please refer to accompanying drawing 1, low noise unit acoustic hood of the present utility model, comprise the cuboid acoustic hood that adopts full-metallic thin plate flanging structure to make, it is characterized in that: the madial wall of described cuboid acoustic hood is disposed with efficient sound absorbing material 1 and metal Micropunch Acoustic Board 2, the all sides of described cuboid acoustic hood are provided with gas-entered passageway 3, operation and regular maintenance for convenience of diesel generating set, each design has a fan side door 4 on the bi-side, power station, side door 4 is installed on the body side frame by door-hinge 18, body side frame adopts sheet metal flanging assembly welding to form, be stiffness and the intensity of guaranteeing it, also several stiffening ribs are gone up in welding, also designing on the side door 4 has rubber door envelope, to guarantee the sealing of side door 4 and framework, prevent the seepage of noise, efficient sound absorbing material 1 and metal Micropunch Acoustic Board 2 also are equipped with in side door 4 inboards, sound-absorbing and sound insulation effectively, its rear portion inner chamber is provided with acoustic hood is divided into the dividing plate 7 that unit is laid chamber 5 and exhaust chamber 6, described dividing plate 7 is provided with the through hole 8 that is used to wear generator set outlet pipe 12, described exhaust chamber top is provided with exhaust hole 9, the bottom side of described cuboid acoustic hood is provided with underframe assembly 10, is provided with fuel tank 11 in the described underframe assembly.
Exhaust sound is one of diesel engine unit main noise source, up to 105dB(A) therefore exhaust sound to be carried out sound-deadening and noise-reducing be a very important link.The impedance complex formula silencing apparatus 13 that is connected with generator set outlet pipe 12 is installed in the above-mentioned exhaust chamber 6, and it has concentrated the good medium-high frequency noise elimination advantage of dissipative muffler, taken into account again reactive muffler good in, the low frequency acoustic characteristics.Waste gas from diesel engine is discharged enters anti-formula silencing apparatus through exhaust elbow, carry out the dilatation step-down after, entering dissipative muffler more further eliminates the noise, and silencing apparatus is built in the acoustic hood air outlet flue, make that the exhaust sound in power station is effectively reduced, and make the power loss minimum.
For acoustic hood, be totally enclosed acoustic hood in theory, its defening effect is best, but, for diesel generating set, air inlet system and exhaust system must be arranged, to satisfy the requirement of diesel generator heat radiation, could not influence unit like this works normally, so must leave enough vented exhaust mouths on acoustic hood, and efficient dissipative muffler is installed, the sound-insulation value of its noise elimination value and acoustic hood is complementary, the both sides of above-mentioned cuboid acoustic hood are provided with labyrinth type air intake road 14, and its front side portion is provided with efficient variable cross section formula air exhaust channel 15.
The inboard, one end of above-mentioned cuboid acoustic hood is provided with unit electric appliance control box 16.
The utility model does not limit to above-mentioned preferred forms, and anyone can draw other various forms of a kind of low noise unit acoustic hoods under enlightenment of the present utility model.All equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. low noise unit acoustic hood, comprise the cuboid acoustic hood that adopts full-metallic thin plate flanging structure to make, it is characterized in that: the madial wall of described cuboid acoustic hood is disposed with efficient sound absorbing material and metal Micropunch Acoustic Board, the all sides of described cuboid acoustic hood are provided with gas-entered passageway, its both sides, middle part are respectively arranged with side door, its rear portion inner chamber is provided with acoustic hood is divided into the dividing plate that unit is laid chamber and exhaust chamber, described dividing plate is provided with the through hole that is used to wear the unit outlet pipe, described exhaust chamber top is provided with exhaust hole, and the bottom side of described cuboid acoustic hood is provided with the underframe assembly.
2. low noise unit acoustic hood according to claim 1 is characterized in that: be provided with fuel tank in the described underframe assembly.
3. low noise unit acoustic hood according to claim 1 is characterized in that: described side door installed inside has efficient sound absorbing material and metal Micropunch Acoustic Board, and described side door perimembranous is provided with rubber door envelope.
4. low noise unit acoustic hood according to claim 1 is characterized in that: the impedance complex formula silencing apparatus that is connected with the generator set outlet pipe is installed in the described exhaust chamber.
5. low noise unit acoustic hood according to claim 1, it is characterized in that: the both sides of described cuboid acoustic hood are provided with the labyrinth type air intake road, and its front side portion is provided with efficient variable cross section formula air exhaust channel.
6. low noise unit acoustic hood according to claim 1 is characterized in that: the inboard, an end of described cuboid acoustic hood is provided with the unit electric appliance control box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201700065U CN202073641U (en) | 2011-05-25 | 2011-05-25 | Sound insulation cover for low-noise machine unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201700065U CN202073641U (en) | 2011-05-25 | 2011-05-25 | Sound insulation cover for low-noise machine unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073641U true CN202073641U (en) | 2011-12-14 |
Family
ID=45111748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201700065U Expired - Fee Related CN202073641U (en) | 2011-05-25 | 2011-05-25 | Sound insulation cover for low-noise machine unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073641U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767670A (en) * | 2012-07-19 | 2012-11-07 | 浙江幸福机电科技有限公司 | Square cabin, manufacturing method of square cabin and generator set using square cabin |
| CN105715375A (en) * | 2016-03-30 | 2016-06-29 | 无锡美羊动力科技有限公司 | Silencing diesel engine shell |
| US10557402B2 (en) * | 2013-03-15 | 2020-02-11 | Kohler Co. | Noise suppression systems |
| CN112343713A (en) * | 2020-11-26 | 2021-02-09 | 江苏英思达科技有限公司 | Sound insulation device for marine engine unit |
-
2011
- 2011-05-25 CN CN2011201700065U patent/CN202073641U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767670A (en) * | 2012-07-19 | 2012-11-07 | 浙江幸福机电科技有限公司 | Square cabin, manufacturing method of square cabin and generator set using square cabin |
| US10557402B2 (en) * | 2013-03-15 | 2020-02-11 | Kohler Co. | Noise suppression systems |
| CN105715375A (en) * | 2016-03-30 | 2016-06-29 | 无锡美羊动力科技有限公司 | Silencing diesel engine shell |
| CN112343713A (en) * | 2020-11-26 | 2021-02-09 | 江苏英思达科技有限公司 | Sound insulation device for marine engine unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20180525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |