CN202747834U - Labyrinth type silencer - Google Patents
Labyrinth type silencer Download PDFInfo
- Publication number
- CN202747834U CN202747834U CN 201220318586 CN201220318586U CN202747834U CN 202747834 U CN202747834 U CN 202747834U CN 201220318586 CN201220318586 CN 201220318586 CN 201220318586 U CN201220318586 U CN 201220318586U CN 202747834 U CN202747834 U CN 202747834U
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- CN
- China
- Prior art keywords
- anechoic sheet
- silencer
- opening
- air inlet
- sheet
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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 - Lifetime
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Abstract
The utility model relates to a labyrinth type silencer which is characterized by comprising a metal pipe used as a shell, silencing plates arranged in the metal pipe, and a ventilating duct positioned between adjacent silencing plates; and 1-5 openings are formed at one end of each silencing plate, the length of each opening is greater than that of the center line of the length of the silencing plate, and the openings of the adjacent silencing plates are alternatively arranged facing the direction of an air inlet and an air outlet. According to the utility model, since the openings of adjacent silencing plates are alternatively arranged in the direction of the air inlet and the air outlet, and the lengths of the openings of the adjacent silencing plates are overlapped, when airflow enters a mechanical draft cooling tower from the outside through the silencer, the circulating area of the airflow in the whole silencer is enlarged, thereby effectively reducing pressure loss at the air inlet, and simultaneously, improving the silencing effect. The labyrinth type silencer is simple in structure, small in pressure loss, and good in silencing effect, and can be widely used in the process of treating noise at the air inlet of the mechanical draft cooling tower.
Description
Technical field
The utility model relates to a kind of silencer, particularly about a kind of labyrinth silencer that is applicable to the noise elimination of induced cooling tower air inlet.
Background technology
Induced cooling tower air inlet noise mainly comprises air power noise and the plant machinery noise that trickle noise, blower fan produce at present.Silencer be a kind of not only can make air-flow by but also low noise equipment can effectively fall, fixing a silencer at the induced cooling tower air inlet is a kind of effective noise-reduction method.At present, induced cooling tower air inlet silencer mostly is strip-type silencer.But for the less induced cooling tower of overbottom pressure, the pressure loss of traditional strip-type silencer can surpass the scope that overbottom pressure allows, and is difficult to guarantee the thermal characteristics of induced cooling tower, or thermal property is reduced.
Summary of the invention
For the problems referred to above, the purpose of this utility model provides and a kind ofly can effectively reduce the air inlet pressure loss when guaranteeing soundproof effect, and is applicable to the labyrinth silencer that the induced cooling tower air inlet is eliminated the noise.
For achieving the above object, the utility model is taked following technical scheme: a kind of labyrinth silencer is characterized in that: it comprises the metal tube as shell, is arranged on the anechoic sheet in the described metal tube, the ventilating duct between adjacent described anechoic sheet; One end of each described anechoic sheet is provided with 1～5 opening, and the length of each opening surpasses the center line of described anechoic sheet length, and the opening of adjacent described anechoic sheet is being crisscross arranged towards air inlet and air outlet direction.
The material of described metal tube is a kind of in steel plate, aluminium sheet and the galvanized sheet, and its thickness is 0.8～1.5mm.
The longitudinal section of adjacent described anechoic sheet superposition of end gap part is amassed 1.2～2.0 times that amass for open cross-section.
The bottom of the two ends of described anechoic sheet and described anechoic sheet opening is provided with guiding device, and the cross sectional shape of described guiding device is a kind of in triangle and the circular arc.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is owing to being provided with some openings at anechoic sheet, and the opening of adjacent anechoic sheet is crisscross arranged in the direction into and out of the air port, therefore making the airflow area that enters induced cooling tower by the utility model is the unidirectional aperture area sum of conventional muffler circulation area and the utility model anechoic sheet, thereby has effectively reduced the pressure loss of air inlet.2, the utility model is owing to the aperture area at adjacent anechoic sheet is provided with lap, after air-flow enters silencer by the opening of anechoic sheet air inlet one side and ventilating duct, can free flow between the lap of the opening of adjacent two anechoic sheets and ventilating duct, and then flow out silencer from the opening of anechoic sheet air outlet one side and ventilating duct, the entire area of airflow is increased, and the circulating direction generation labyrinth type of air-flow changes, the variation that particularly free air space can be expanded and dwindle in the airflow process, when reducing the pressure loss, effectively improved soundproof effect.3, the utility model is because with long-pending long-pending 1.2～2.0 times of open cross-section that are set in the longitudinal section of adjacent anechoic sheet superposition of end gap part, therefore can when reducing the air inlet pressure loss, guarantee soundproof effect, and owing to all being provided with opening on each anechoic sheet, make the weight saving of whole silencer.The utility model is simple in structure, and the pressure loss is little, and soundproof effect is good, and it can be widely used in the governance process of induced cooling tower air inlet noise.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the schematic top plan view of Fig. 1
Fig. 3 is the utility model anechoic sheet structural representation
Fig. 4 is B-B generalized section among Fig. 3
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, the utility model comprises the metal tube 1 as shell, is arranged on the some anechoic sheets 2 in the metal tube 1, the ventilating duct 3 between adjacent anechoic sheet 2.
Such as Fig. 1, Fig. 3, shown in Figure 4, the design parameter of anechoic sheet is basic identical in the parameter such as the sheet of anechoic sheet 2 of the present utility model is thick, the width of length of a film and ventilating duct 3 and the prior art, can require adjust accordingly according to actual acoustic.One end of each anechoic sheet 2 is provided with two openings 4 that stretch to the other end, and the length of each opening 4 surpasses the center line of anechoic sheet 2.
When metal tube 1 interior installation anechoic sheet 2, the opening 4 of adjacent anechoic sheet 2 is being crisscross arranged towards air inlet and air outlet direction, that is, when the opening 4 of an anechoic sheet 2 during towards the air inlet direction, the opening 4 of another adjacent anechoic sheet 2 is towards the air outlet direction.Simultaneously because the length of each anechoic sheet opening 4 all surpasses the center line of anechoic sheet 2, thus opening 4 bottoms of adjacent anechoic sheet 2 some be overlapping.
In above-described embodiment, long-pending 1.2～2.0 times of should be opening 4 cross-sectional areas in the longitudinal section of opening 4 laps of adjacent two anechoic sheets 2.That is, the length of adjacent apertures 4 laps should be 1.2～2.0 times with the ratio of the thickness of anechoic sheet 2.
In above-described embodiment, metal tube 1 can adopt the materials such as steel plate, aluminium sheet and galvanized sheet, and the thickness of metal tube 1 is in 0.8～1.5mm scope.
In above-described embodiment, the air inlet of anechoic sheet 2 and the end face of air outlet are respectively arranged with guiding device 5, and simultaneously opening 4 bottoms of anechoic sheet 2 are provided with guiding device 6, and guiding device 5,6 cross sectional shape can be the shapes such as triangle or circular arc.
In the various embodiments described above, the quantity that opening 4 is set on each anechoic sheet 2 can be adjusted according to actual needs, such as changing in 1～5 scope.
During use, mounted the utility model can be arranged in order and up and down Xiang Lei be arranged on need to the eliminate the noise air inlet place in orientation of induced cooling tower, form " body of wall " of certain altitude.Air-flow enters silencer by opening 4 and the ventilating duct 3 of anechoic sheet 2 air inlets one side, air-flow free flow between opening 4 laps of adjacent two anechoic sheets 2 and ventilating duct 3, and then opening 4 and the ventilating duct 3 by anechoic sheet 2 air outlets one side flows out silencers.Like this air-flow not only circulating direction generation labyrinth type variation in silencer, and the entire area of airflow increases, and the variation that free air space also can be expanded and dwindle in the process of circulation has realized reducing the pressure loss effectively, improves the purpose of soundproof effect.
The various embodiments described above only are used for explanation the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents and improvement of carrying out on the basis of technical solutions of the utility model all should do not got rid of outside protection domain of the present utility model.
Claims (5)
1. labyrinth silencer, it is characterized in that: it comprises the metal tube as shell, is arranged on the anechoic sheet in the described metal tube, the ventilating duct between adjacent described anechoic sheet; One end of each described anechoic sheet is provided with 1～5 opening, and the length of each opening surpasses the center line of described anechoic sheet length, and the opening of adjacent described anechoic sheet is being crisscross arranged towards air inlet and air outlet direction.
2. a kind of labyrinth silencer as claimed in claim 1 is characterized in that: the material of described metal tube is a kind of in steel plate, aluminium sheet and the galvanized sheet, and its thickness is 0.8～1.5mm.
3. a kind of labyrinth silencer as claimed in claim 1 is characterized in that: long-pending 1.2～2.0 times of amassing for open cross-section in the longitudinal section of adjacent described anechoic sheet superposition of end gap part.
4. a kind of labyrinth silencer as claimed in claim 2 is characterized in that: long-pending 1.2～2.0 times of amassing for open cross-section in the longitudinal section of adjacent described anechoic sheet superposition of end gap part.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of labyrinth silencer, it is characterized in that: the bottom of the two ends of described anechoic sheet and described anechoic sheet opening is provided with guiding device, and the cross sectional shape of described guiding device is a kind of in triangle and the circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318586 CN202747834U (en) | 2012-07-02 | 2012-07-02 | Labyrinth type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318586 CN202747834U (en) | 2012-07-02 | 2012-07-02 | Labyrinth type silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202747834U true CN202747834U (en) | 2013-02-20 |
Family
ID=47707214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220318586 Expired - Lifetime CN202747834U (en) | 2012-07-02 | 2012-07-02 | Labyrinth type silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202747834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022814A (en) * | 2019-12-17 | 2020-04-17 | 华电重工股份有限公司 | Matrix type silencer |
-
2012
- 2012-07-02 CN CN 201220318586 patent/CN202747834U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022814A (en) * | 2019-12-17 | 2020-04-17 | 华电重工股份有限公司 | Matrix type silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |