CN2865115Y - Noise reduction sound-deadening type generating set - Google Patents
Noise reduction sound-deadening type generating set Download PDFInfo
- Publication number
- CN2865115Y CN2865115Y CNU2006200542542U CN200620054254U CN2865115Y CN 2865115 Y CN2865115 Y CN 2865115Y CN U2006200542542 U CNU2006200542542 U CN U2006200542542U CN 200620054254 U CN200620054254 U CN 200620054254U CN 2865115 Y CN2865115 Y CN 2865115Y
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- China
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- noise reduction
- generating set
- noise
- plate
- silencer box
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model discloses a noise damping generator set, comprising a generator; a rain hood arranged outside of the generator set; a first noise damping box, arranged in the rain hood, with an air inlet and an air outlet, wherein, the air inlet is butt jointed to the air outlet of the generator; the utility model ensures the noisy air-flow exhaust from the generator set is damped completely through the noise damping box before it is drafted out of the hood, without noise leakage, and therefore delivers good noise reduction effect.
Description
[technical field]
The utility model relates to a kind of bell-type generating set.
[background technology]
Along with the development of society, environmental problem more and more is subject to people's attention, and at present to be known as by international community be the key issue that influences the 21 century sustainable development to environmental problem, and noise pollution one of 21 century mankind environmental problem of primarily capturing especially.Noise control technique commonly used in the world at present mainly contains noise elimination, sound absorption, sound insulation, vibration isolation damping etc.Air draft noise reduction for soundproof bell-type generating set, the noise elimination structure that adopts mainly contains at present: air-exhaust type is eliminated the noise on 1, exhaust outlet upwards is set on its outer cover, reduce noise by shielding propagation of noise direction, this mode noise reduction is limited, and is unfavorable for the rainproof and antirust of bell-type generating set; 2 down air-exhaust types are eliminated the noise, downward exhaust outlet is set on its outer cover, also is to reduce noise by shielding propagation of noise direction, and the noise elimination effect is undesirable, and following air draft is unfavorable for the air discharging and radiating of bell-type generating set, and exhaust resistance increase simultaneously causes generating set power to reduce; Common muffler plate is set in 3 outer covers eliminates the noise, owing to reasons such as the structure of muffler plate and mounting meanss, the noise elimination effect of common muffler plate is unsatisfactory.
[summary of the invention]
The purpose of this utility model is exactly in order to overcome above the deficiencies in the prior art, and a kind of simple in structure, effect is remarkable, cost is low generating set air draft noise elimination structure is provided.
For achieving the above object, the present invention proposes a kind of noise reduction noise elimination formula generating set, comprise generator, rain cover, described rain cover covers at outside the described generator, also comprise the first noise reduction silencer box, the described first noise reduction silencer box is arranged in the described rain cover, and it offers air inlet and air outlet, and the exhaust outlet of its air inlet and described generator connects.
Above-mentioned noise reduction noise elimination formula generating set, described noise reduction silencer box air inlet docks with the exhaust outlet sealing of described generator.
Above-mentioned noise reduction noise elimination formula generating set also comprises the second noise reduction silencer box, and its air inlet and the described first noise reduction Sound Attenuator air outlet join.The described second noise reduction silencer box is identical with the described first noise reduction Sound Attenuator structure, and mirror image is symmetrical arranged.
The above-mentioned first or second noise reduction silencer box comprises casing, muffler plate, and described muffler plate is installed in the described casing at interval.Described muffler plate installation interval level angle identical, that install is identical, even and parallel being distributed in the described casing.Described muffler plate comprises framework, metal perforated plate, sound-absorbing material layer, and described sound-absorbing material layer is located between the described metal perforated plate, and described metal perforated plate is fixed on the described framework.Described muffler plate also comprises armour layer, is located between described metal perforated plate and the sound-absorbing material layer.Described muffler plate also comprises the orifice plate fixed strip, is located between the described metal perforated plate.
Owing to adopted above scheme, the utility model is set up the noise reduction silencer box in the generating hood, dock with its exhaust outlet sealing, after having guaranteed that noise air stream that generating set is discharged carries out noise elimination noise reduction through silencer box fully, just discharge outside the cover, guaranteed that noise does not have leakage before the silencer box of flowing through, noise reduction is remarkable.
Because the design feature of the utility model noise reduction silencer box, when the noise sound wave is flowed through muffler plate, the double-sided perforated plate of muffler plate forms the double resonance sound absorption structure, the low frequency and the mid-frequency noise that discharge by exhaust outlet during the generating set running are absorbed, and the high-frequency noise of release is then absorbed by glass fibre cotton.So silencer box of the present utility model can absorb generating set when running by exhausting duct discharged by the wideband noise of low frequency to high frequency, so this silencer box noise reduction is obvious, excellent noise reduction effect.
The utility model is owing to adopt special noise reduction silencer box, and the acoustical panel special structure design makes air draft smooth and easy, and windage is little, improves the efficient of generating set.Noise reduction Sound Attenuator of the present utility model is easy to processing, and is easy for installation, durable in use.
[description of drawings]
Fig. 1 is the sectional structure schematic diagram of the utility model embodiment one;
Fig. 2 is the sectional structure schematic diagram of the utility model embodiment four;
Fig. 3 is a noise reduction Sound Attenuator general illustration of the present utility model;
Fig. 4 is that schematic diagram is looked on the left side of Fig. 3;
Fig. 5 is the structural representation of facing of noise reduction Sound Attenuator acoustical panel of the present utility model;
Fig. 6 is that cutaway view is looked on the left side of the acoustical panel of Fig. 5;
Fig. 7 is the partial enlarged drawing of the acoustical panel of Fig. 6.
[embodiment]
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment one: as shown in Figure 1, this routine noise reduction noise elimination formula generating set power is 68kw, comprises generating set 4, rain cover 3, the first noise reduction silencer box 1; The first noise reduction silencer box is installed in the rain cover, and its air inlet docks with the exhaust outlet sealing of generator.Please refer to Fig. 1, shown in Figure 3, the noise reduction silencer box is assembled by casing 11 and muffler plate 12, and muffler plate is pressed 30 ° of horizontal sextant angles, 200mm is provided with at interval, is fixedly welded in the casing.Every muffler plate is the unit of independently eliminating the noise.Casing is welded by steel plate processing, has abundant strength and stiffness.Muffler plate thickness of slab 40mm, its structure please refer to Fig. 5, Fig. 6, shown in Figure 7, muffler plate is assembled by framework 121 and sound-absorbing material, the muffler plate framework is welded for the grooved steel part, sound-absorbing material layer 123 adopts glass fibre cotton, the surface of glass fibre cotton also adopts glass cloth as armour layer 124, outer surface is a double-sided metal orifice plate 122, sound-absorbing material layer 123, armour layer 124 are located in wherein, be the intensity of reinforcement metal orifice plate simultaneously, in the middle of two metal perforated plates, add an orifice plate fixed strip 125.The air inlet of silencer box and the exhaust outlet of generating set butt joint and airtight have so just guaranteed that the noise air stream of generating set discharge is discharged outside the cover through silencer box fully, have guaranteed that the air draft noise does not have leakage before the silencer box of flowing through.When the noise sound wave was flowed through muffler plate, the double-sided perforated plate of muffler plate formed the double resonance sound absorption structure, and the low frequency and the mid-frequency noise that discharge by exhaust outlet during the generating set running are absorbed, and the high-frequency noise of release is then absorbed by glass fibre cotton.That is to say that this silencer box can absorb generating set when running by exhaust outlet discharged by the wideband noise of low frequency to high frequency.Therefore this silencer box noise reduction is obvious.Through actual detected, the noise reduction of this device is between 20-40dB (A).
In the practical application, can be by the angle of change muffler plate and the thickness of slab of density and muffler plate etc. to adapt to the generating set of different capacity.
Embodiment two: this routine noise reduction noise elimination formula generating set is the 160kw unit, the muffler plate thickness of slab 80mm that the noise reduction silencer box adopts, muffler plate spacing 240mm, 25 ° of the horizontal sextant angles that muffler plate is installed.
Embodiment three: this routine noise reduction noise elimination formula generating set is the 400kw unit, the muffler plate thickness of slab 80mm that the noise reduction silencer box adopts, and muffler plate spacing 280mm, the horizontal sextant angle of installation are 25 °.
Embodiment four: as shown in Figure 2, this routine noise reduction noise elimination formula generating set is the 800kw unit, because this routine generator power is bigger, the air draft noise is also bigger, this example adopts the first noise reduction silencer box 1 and the second noise reduction silencer box 2, and two noise reduction Sound Attenuators are arranged in opposite directions, and mirror image is symmetrical arranged, by the secondary noise elimination noise reduction, effect is remarkable.The muffler plate thickness of slab 80mm that the noise reduction silencer box adopts, it is spacing 300mm that muffler plate is provided with density, the horizontal sextant angle of installation is 30 °.
Claims (10)
1, a kind of noise reduction noise elimination formula generating set, comprise generating set, rain cover, described rain cover covers at outside the described generating set, it is characterized in that: also comprise the first noise reduction silencer box, the described first noise reduction silencer box is arranged in the described rain cover, it offers air inlet and air outlet, and the exhaust outlet of its air inlet and described generating set connects.
2, noise reduction noise elimination formula generating set as claimed in claim 1 is characterized in that: described noise reduction silencer box air inlet docks with the exhaust outlet sealing of described generating set.
3, noise reduction noise elimination formula generating set as claimed in claim 1 or 2 is characterized in that: also comprise the second noise reduction silencer box, its air inlet and the described first noise reduction Sound Attenuator air outlet join.
4, noise reduction noise elimination formula generating set as claimed in claim 3 is characterized in that: the described second noise reduction silencer box is identical with the described first noise reduction Sound Attenuator structure, and mirror image is symmetrical arranged.
5, noise reduction noise elimination formula generating set as claimed in claim 3, it is characterized in that: the described first or second noise reduction silencer box comprises casing, muffler plate, and described muffler plate is installed in the described casing at interval.
6, noise reduction noise elimination formula generating set as claimed in claim 5 is characterized in that: described muffler plate installation interval level angle identical, that install is identical, even and parallel being distributed in the described casing.
7, noise reduction noise elimination formula generating set as claimed in claim 6, it is characterized in that: described muffler plate comprises framework, metal perforated plate, sound-absorbing material layer, and described sound-absorbing material layer is located between the described metal perforated plate, and described metal perforated plate is fixed in the described framework.
8, noise reduction noise elimination formula generating set as claimed in claim 7, it is characterized in that: described muffler plate also comprises armour layer, is located between described metal perforated plate and the sound-absorbing material layer.
9, noise reduction noise elimination formula generating set as claimed in claim 7, it is characterized in that: described muffler plate also comprises the orifice plate fixed strip, is located between the described metal perforated plate.
10, noise reduction noise elimination formula generating set as claimed in claim 8, it is characterized in that: described muffler plate also comprises the orifice plate fixed strip, is located between the described metal perforated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200542542U CN2865115Y (en) | 2006-01-21 | 2006-01-21 | Noise reduction sound-deadening type generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200542542U CN2865115Y (en) | 2006-01-21 | 2006-01-21 | Noise reduction sound-deadening type generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865115Y true CN2865115Y (en) | 2007-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200542542U Expired - Fee Related CN2865115Y (en) | 2006-01-21 | 2006-01-21 | Noise reduction sound-deadening type generating set |
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| Country | Link |
|---|---|
| CN (1) | CN2865115Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361365A (en) * | 2011-10-26 | 2012-02-22 | 中电电机股份有限公司 | Silencing top cover for motor |
| CN109309431A (en) * | 2018-08-21 | 2019-02-05 | 西门子电气传动有限公司 | Air outlet silencing means, denoising device and the electric system of aerodynamic noise in motor |
| CN112922723A (en) * | 2021-03-22 | 2021-06-08 | 广西玉林卓越动力发电设备有限公司 | Novel high-efficient generator room air intake amortization device |
-
2006
- 2006-01-21 CN CNU2006200542542U patent/CN2865115Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361365A (en) * | 2011-10-26 | 2012-02-22 | 中电电机股份有限公司 | Silencing top cover for motor |
| CN109309431A (en) * | 2018-08-21 | 2019-02-05 | 西门子电气传动有限公司 | Air outlet silencing means, denoising device and the electric system of aerodynamic noise in motor |
| CN109309431B (en) * | 2018-08-21 | 2021-06-29 | 西门子电气传动有限公司 | Air outlet silencing device and noise reduction device for pneumatic noise in motor and motor system |
| CN112922723A (en) * | 2021-03-22 | 2021-06-08 | 广西玉林卓越动力发电设备有限公司 | Novel high-efficient generator room air intake amortization device |
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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: 20070131 Termination date: 20140121 |