CN203442408U - Damping and sound-insulating compound device for draught fan pipeline of power plant - Google Patents
Damping and sound-insulating compound device for draught fan pipeline of power plant Download PDFInfo
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- CN203442408U CN203442408U CN201320433823.4U CN201320433823U CN203442408U CN 203442408 U CN203442408 U CN 203442408U CN 201320433823 U CN201320433823 U CN 201320433823U CN 203442408 U CN203442408 U CN 203442408U
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- sound
- damping
- insulating
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- plate
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Abstract
The utility model relates to a damping and sound-insulating compound device for a draught fan pipeline of a power plant. The damping and sound-insulating compound device for the draught fan pipeline of the power plant comprises a damping and sound-insulating compound plate (1) and the draught fan pipeline (2), and is characterized in that the damping and sound-insulating compound plate (1) comprises sound-insulating cotton (3), an air cavity (4), a main keel (5), a damping sound-insulating plate (6), a metal sound-insulating plate (7), a secondary keel (8) and a surface-protecting colored steel plate (9); the sound-insulating cotton (3) is arranged on the innermost side; the damping sound-insulating plate (6) is supported and fixed by the main keel (5); the air cavity (4) is formed between the sound-insulating cotton (3) and the damping sound-insulating plate (6); the metal sound-insulating plate (7) is tightly glued to the outer side of the damping sound-insulating plate (6); the sound-insulating cotton (3) is filled between the metal sound-insulating plate (7) and the surface-protecting colored steel plate (9); the metal sound-insulating plate (7) and the surface-protecting colored steel plate (9) are supported by the secondary keel (8). The damping and sound-insulating compound device for the draught fan pipeline of the power plant has the advantages of simple structure, strong pertinence, excellent sound-insulating effect and convenience in mounting.
Description
Technical field
The utility model designs the compound sound absorption device of a kind of power plant fans pipeline damping, belongs to power plant fans noise control in duct field.
Background technique
At pipeline outer wall, Felt being set is to solve the conventional equipment of duct noise, and it in actual production, for worker provides good working environment, has played very important effect as a kind of sound insulation and noise reducing equipment.
Felt be mainly by sound source is absorbed sound simultaneously and insulate against sound to reach fall low noise.By sound-absorbing material and the sound insulating material composition plank frame of arranging in certain sequence, noise waves is entered wherein, part acoustic energy rubs and is converted to thermal dissipation point in the hole of the sound-absorbing material of porous, a part is gone back by the little sound insulating material blocking reflected of entrant sound amount, only having seldom a part of acoustic energy to spread out of impact by sound absorption structure is being subject to, thereby greatly reduce noise waves, affect to external world, reach noise reduction object.
Power plant fans is all large-scale high pressure flow-mixing blower fan, and air quantity is large, and installed power is large, and its ventilation duct is under such Wind Volume situation, and the aerodynamic noise causing due to internal gas flow turbulence is huge, and noise forms complicated.Traditional Felt complex structure, install and be subject to a lot of restrictions early stage, and undesirable to the defening effect of complicated sound source, and noise reduction cost is relatively high.
The utility model, for solving the above-mentioned deficiency of traditional Felt, provides a kind of defening effect good for power plant fans ventilation duct, the compound Felt of power plant fans ventilation duct damping simple in structure, easy for installation.
Summary of the invention
The utility model is mainly for the compound sound absorption device of a kind of power plant fans pipeline damping of power plant fans ventilation duct Noise Design.The compound sound absorption device of this power plant fans pipeline damping, comprise the compound Felt 1 of damping and Fan pipeline 2, it is characterized in that: the compound Felt 1 of described damping comprises acoustical cotton 3, air cavity 4, main joist 5, damping sound-insulation board 6, metal sound insulationg board 7, false keel 8 and mask color steel 9; Wherein inner side is acoustical cotton 3, main joist 5 supports fixedly damping sound-insulation board 6, and forms air cavity 4 between acoustical cotton 3 and damping sound-insulation board 6, and metal sound insulationg board 7 fits tightly outside damping sound-insulation board 6, between metal sound insulationg board 7 and mask color steel 9, fill acoustical cotton 3, by false keel 8, support fixing.
Wherein damping sound-insulation board 6 one sides, with sticky glutinous agent, fit tightly with metal sound insulationg board 7.
Accompanying drawing explanation
Accompanying drawing 1 is the compound Felt scheme of installation of damping
Accompanying drawing 2 is the compound Felt sectional drawing of damping
Accompanying drawing 3 is damping, metal sound insulationg board schematic diagram
Wherein:
1 is the compound Felt of damping
2 is Fan pipeline
3 is acoustical cotton
4 is air cavity
5 is main joist
6 is damping sound-insulation board
7 is metal sound insulationg board
8 is false keel
9 is mask color steel
10 is self threading pin
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described
As shown in Figure 1, the compound sound absorption device of this power plant fans pipeline damping, comprises the compound Felt 1 of damping and Fan pipeline 2;
As shown in Figure 2, the compound Felt 1 of this damping comprises acoustical cotton 3, air cavity 4, main joist 5, damping sound-insulation board 6, metal sound insulationg board 7, false keel 8 and mask color steel 9; Wherein inner side is acoustical cotton 3, main joist 5 supports fixedly damping sound-insulation board 6, and forms air cavity 4 between acoustical cotton 3 and damping sound-insulation board 6, and metal sound insulationg board 7 fits tightly outside damping sound-insulation board 6, between metal sound insulationg board 7 and mask color steel 9, fill acoustical cotton 3, by false keel 8, support fixing;
As shown in Figure 3, damping sound-insulation board 6 one sides, with sticky glutinous agent, fit tightly with metal sound insulationg board 7;
With time according to the requirement of primary air fan ventilation duct size, air quantity and sound deadening capacity, design compound Felt 1 each layer of structural thickness of damping, to meet actual noise reduction requirement.
Technique effect
The compound sound absorption apparatus structure of power plant fans pipeline damping that the utility model is asked for protection is simple, with strong points, defening effect is good, easy for installation.The compound Felt of damping is compound in scene, is transported to on-the-spot compound installation according to on-site actual situations after factory's blanking machines.This structure is for the design of power plant fans ventilation duct noise waves spectral characteristic, and the sound insulation property reasonable arrangement with unlike material to different frequency range, makes every effort to, with most economical method, reach best noise reduction.
The foregoing is only a kind of mode of execution of the present utility model, it not whole or unique mode of execution, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading specification of the present invention, is claim of the present utility model and contains.
Claims (2)
1. the compound sound absorption device of power plant fans pipeline damping, comprises the compound Felt of damping (1) and Fan pipeline (2); It is characterized in that the compound Felt of described damping (1) comprises acoustical cotton (3), air cavity (4), main joist (5), damping sound-insulation board (6), metal sound insulationg board (7), false keel (8) and mask color steel (9); Wherein inner side is acoustical cotton (3), main joist (5) supports fixedly damping sound-insulation board (6), and form air cavity (4) between acoustical cotton (3) and damping sound-insulation board (6), metal sound insulationg board (7) fits tightly outside damping sound-insulation board (6), between metal sound insulationg board (7) and mask color steel (9), fill acoustical cotton (3), by false keel (8), supported fixing.
2. the compound sound absorption device of a kind of power plant fans pipeline according to claim 1 damping, is characterized in that described damping sound-insulation board (6) one side, with sticky glutinous agent, fits tightly with metal sound insulationg board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433823.4U CN203442408U (en) | 2013-07-22 | 2013-07-22 | Damping and sound-insulating compound device for draught fan pipeline of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320433823.4U CN203442408U (en) | 2013-07-22 | 2013-07-22 | Damping and sound-insulating compound device for draught fan pipeline of power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442408U true CN203442408U (en) | 2014-02-19 |
Family
ID=50093464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320433823.4U Expired - Fee Related CN203442408U (en) | 2013-07-22 | 2013-07-22 | Damping and sound-insulating compound device for draught fan pipeline of power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736478A (en) * | 2016-03-30 | 2016-07-06 | 王刚 | Sound insulation and noise reduction device of draught fan |
-
2013
- 2013-07-22 CN CN201320433823.4U patent/CN203442408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736478A (en) * | 2016-03-30 | 2016-07-06 | 王刚 | Sound insulation and noise reduction device of draught fan |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20210722 |