CN201199132Y - Mechanical-draft cooling tower muffler - Google Patents
Mechanical-draft cooling tower muffler Download PDFInfo
- Publication number
- CN201199132Y CN201199132Y CNU2008200791953U CN200820079195U CN201199132Y CN 201199132 Y CN201199132 Y CN 201199132Y CN U2008200791953 U CNU2008200791953 U CN U2008200791953U CN 200820079195 U CN200820079195 U CN 200820079195U CN 201199132 Y CN201199132 Y CN 201199132Y
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- China
- Prior art keywords
- cooling tower
- silencing apparatus
- air
- air draft
- metal
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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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- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 230000030279 gene silencing Effects 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 36
- 240000005528 Arctium lappa Species 0.000 claims description 13
- 238000003379 elimination reaction Methods 0.000 claims description 13
- 239000011358 absorbing material Substances 0.000 claims description 12
- 230000008030 elimination Effects 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000011946 reduction process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 229910000939 field's metal Inorganic materials 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a muffler device for a mechanical draft cooling tower, which comprises an air intake muffler device, an air intake guide device, an air exhaust guide device, an air exhaust muffler device and air exhaust sound absorption and insulation screens. The air intake muffler device is arranged outside an air intake of the cooling tower and comprises a plurality of resistive muffler units facing the air intake and in vertical and horizontal arrangement and a plurality of reactive muffler units horizontally positioned between every adjacent ones of the two rows of resistive muffler units. The air intake guide device is formed by smooth guide plates which shrink gradually from the air intake muffler device towards the air intake of the cooling tower; the air exhaust guide device is formed by smooth guide plates which expand gradually from an air outlet of the cooling tower towards the air exhaust muffler device; the air exhaust muffler device is arranged over the air outlet of the cooling tower and formed by a plurality of resistive and reactive muffler units in horizontal arrangement. The air exhaust sound absorption and insulation screens are positioned over the air exhaust muffler device. The muffler device can effectively reduce the noise of the mechanical draft cooling tower and be widely applied to the draft noise reduction process of various mechanical draft cooling towers.
Description
Technical field
The utility model relates to a kind of silencing apparatus, particularly about a kind of induced cooling tower silencing apparatus.
Background technology
Noise during the induced cooling tower operation is quite big, generally can reach more than 90 decibel, generally all it is not taked noise reduction measure in the prior art, only is with its place away from people's activity, and this just causes induced cooling tower facility floor space big especially.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of can and the elimination within the specific limits noise limit, and the noise reduction wide frequency range, the induced cooling tower silencing apparatus of excellent noise reduction effect.
For achieving the above object, the utility model is taked following technical scheme: a kind of induced cooling tower silencing apparatus, it is characterized in that: it comprises wind inlet silencing device, air intake guide device, the air draft guiding device, air draft silencing apparatus and some air draft sound absorbing-insulatings, described wind inlet silencing device is arranged on the air inlet outside of described cooling tower, described wind inlet silencing device comprises that several resistance noise reduction unit and several horizontally disposed reactive muffling unit form, described resistance noise reduction elemental area to the air intake direction, be divided into up and down and arrange; Described resistance unit horizontal is arranged between each the adjacent described resistance noise reduction of two rows unit; Described air intake guide device is made of the smooth deflector that shrinks gradually to the air inlet of described cooling tower around the described wind inlet silencing device; Described air draft guiding device is made of the smooth deflector of expanding gradually to described air draft silencing apparatus around the air outlet of described cooling tower, described air draft silencing apparatus is arranged on the air outlet top of described cooling tower, and described air draft silencing apparatus is made up of some horizontal impedance complex noise elimination unit; Described some air drafts are obliquely installed above described air draft silencing apparatus every gobo, describedly are made up of a side metal blind plate and a side perforated metal panel and the sound-absorbing material that is enclosed between the two every the gobo unit.
Sidewall is provided with the reactive muffling sheet around the air inlet of described wind inlet silencing device.
Described reactive muffling unit is made up of the perforated metal panel in front, the metal blind plate at the back side and the cavity that forms between the two.
Each described resistance noise reduction unit comprises frame and the some slice resistance noise reduction sheets of arranged vertical in described frame at interval, and the described resistance noise reduction sheet of each sheet is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the described double layer of metal orifice plate.
Each described impedance complex unit is made up of resistance frame and plurality of resistive anechoic sheet, described plurality of resistive anechoic sheet is vertical being plugged in the described resistance frame in interval in a row, described resistance frame is made up of the metal blind plate of outer surface, the metal perforated plate of inner surface and the cavity that forms between the two, and the described resistance noise reduction sheet of each sheet is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the described double layer of metal orifice plate.
Angle of inclination between each described air draft sound absorbing-insulating and the described air draft silencing apparatus is 30～150 °.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to be provided with the wind inlet silencing device of being made up of resistance noise reduction unit and reactive muffling unit respectively at cooling tower into and out of the air port, be provided with the air-out muffler device of forming by impedance complex noise elimination unit at the cooling tower air outlet, the noise limit that therefore the cooling tower inlet and outlet can be spread out of in a small range, thereby solved the insoluble cooling tower buzz of the prior art problem bigger effectively to surrounding environment influence.2, the utility model is owing to be provided with the air intake guide device of convergent between the air inlet of cooling tower and wind inlet silencing device, between the air outlet of cooling tower and air-out muffler device, be provided with the air-out guiding device of flaring, therefore both can play the quickening air velocity at the air inlet of cooling tower, make static pressure be converted into dynamic pressure, reduce the effect of circulation of air resistance, can play the speed that reduces air-flow again at the air outlet of cooling tower, make dynamic pressure be converted into static pressure, steady pressure reduces the effect of drag losses.3, the utility model is taked the silencing apparatus of resistance noise reduction unit and reactive muffling unit combination in the air intake silencer, especially can solve the medium and low frequency noise problem, and advantage is an anechoic frequency bandwidth, and sound deadening capacity is big, and flowing resistance is little.Characteristics such as 4, therefore the utility model can realize anechoic frequency bandwidth owing to adopt impedance complex noise elimination unit in the air-out silencer, especially can solve the medium and low frequency noise problem, and sound deadening capacity is big, and flowing resistance is little.5, the utility model is owing to adopt some air draft sound absorbing-insulatings that are obliquely installed above the air draft silencing apparatus, and insulating against sound in its inboard sound absorption, the outside, can improve the directive property of sound source effectively, have tangible noise reduction, and do not influence exhaust resistance.The utility model is rational in infrastructure, and the noise elimination effect is remarkable, and noise reduction can reach more than the 30dB (A), can be widely used in the ventilation noise elimination process of various mechanical force cooling columns.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model structural representation
Fig. 3 is the utility model resistance noise reduction chip architecture schematic diagram
Fig. 4 is the top cross-sectional view of Fig. 3
Fig. 5 is the utility model reactive muffler structural representation
Fig. 6 is the schematic top plan view of Fig. 5
Fig. 7 is the utility model impedance complex noise elimination cellular construction schematic diagram
Fig. 8 is the schematic side view of Fig. 7
Fig. 9 is the top cross-sectional view of Fig. 7
Figure 10 is that the utility model air draft is every the gobo structural representation
Figure 11 is that the side of Figure 10 is shown profile
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 is mainly by wind inlet silencing device 10, air intake guide device 20, and air draft guiding device 30, air draft silencing apparatus 40, air draft is formed every gobo 50.
Wind inlet silencing device 10 of the present utility model is arranged on the outside of cooling tower 1 air inlet 2, and the noise at air inlet 2 places is played the noise elimination effect.Wind inlet silencing device 10 comprises several resistance noise reduction unit 11 and several horizontally disposed reactive muffling unit 12.As shown in Figure 2, resistance noise reduction unit 11 integral body are square or rectangle, are divided into up and down towards the air intake direction and arrange, and are arranged with some vertically disposed resistance noise reduction sheets 111 in each resistance noise reduction unit 11.As shown in Figure 3, Figure 4, each sheet resistance noise reduction sheet 111 is made up of double layer of metal orifice plate 112 and the sound-absorbing material 113 that is enclosed between the double layer of metal orifice plate 112.As Fig. 5, shown in Figure 6, reactive muffling unit 12 integral body also are square or rectangle, as shown in Figure 2, horizontally between each adjacent two exclusion noise elimination unit 11, reactive muffling unit 12 can also be provided with a circle at the housing of whole wind inlet silencing device 10 in reactive muffling unit 12.As shown in Figure 5, frame 121 around each reactive muffling unit 12 comprises, the metal perforated plate 122 and the metal blind plate 123 that are arranged on the frame two ends are formed.
Air intake guide device 20 of the present utility model is to be made of the smooth deflector that shrinks gradually to cooling tower 1 air inlet 2 around wind inlet silencing device 10.The contraction section of air intake guide device 20 smooth gradual changes can play the quickening air velocity, makes static pressure be converted into dynamic pressure, reduces the effect of circulation of air resistance.
Air draft guiding device 30 of the present utility model is to be made of the smooth deflector of expanding gradually to air draft silencing apparatus 40 around cooling tower 1 air outlet 3.The expansion segment of air draft guiding device 30 smooth gradual changes can play the speed that reduces air-flow, makes dynamic pressure be converted into static pressure, and steady pressure reduces the effect of drag losses.
Shown in Fig. 1, Fig. 7～9, air draft silencing apparatus 40 is arranged on the top of cooling tower 1 top exhaust outlet 3, and the noise of air outlet 3 is played the noise elimination effect.Air draft silencing apparatus 40 is made up of some impedance complex noise eliminations unit.Each impedance complex unit comprises resistance frame 41 and plurality of resistive anechoic sheet 42 compositions.Resistance frame 41 is to adopt the metal blind plate at the outer surface of frame, adopts metal perforated plate to be made at the frame inner surface, and resistance noise reduction sheet 42 is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the double layer of metal orifice plate.Plurality of resistive anechoic sheet 42 is vertical being plugged in the resistance frame 41 in interval in a row.Some impedance complex whole units all are arranged in cooling tower 1 exhaust outlet 3 tops in horizontal direction.
Shown in Fig. 1, Figure 10～11, some air drafts that are obliquely installed are arranged on the top of air draft silencing apparatus 40 on the cooling tower 1 top exhaust outlet 3 every gobo 50, its inboard sound absorption, outside sound insulation, can play the effect that reduces the exhaust outlet noise, can improve the directive property of sound effectively, tangible noise reduction is arranged, and do not influence exhaust resistance.Each air draft every gobo 50 by outer field metal blind plate 51, the metal perforated plate 53 of internal layer and be enclosed in metal blind plate 51 and orifice plate 53 between sound-absorbing material 52 form.Each air draft is 30～150 ° every the angle of inclination of the horizontally disposed relatively air draft silencing apparatus 40 of gobo 50.Air draft in the utility model can reach 5～8dB (A) every the noise reduction of inhaling screen.
Above-mentioned sound-absorbing material can be selected the various sound-absorbing materials of prior aries such as mineral wool.
The utility model can guarantee on the basis that does not influence induced cooling tower 1 key property by above measure, induced cooling tower 1 is carried out noise elimination noise reduction handle, and noise reduction can reach more than the 30dB (A).
Claims (10)
1. induced cooling tower silencing apparatus, it is characterized in that: it comprises wind inlet silencing device, air intake guide device, the air draft guiding device, air draft silencing apparatus and some air drafts are every gobo, described wind inlet silencing device is arranged on the air inlet outside of described cooling tower, and described wind inlet silencing device comprises that several resistance noise reduction unit and several horizontally disposed reactive muffling unit form, described resistance noise reduction elemental area to the air intake direction, be divided into up and down and arrange; Described resistance unit horizontal is arranged between each the adjacent described resistance noise reduction of two rows unit; Described air intake guide device is made of the smooth deflector that shrinks gradually to the air inlet of described cooling tower around the described wind inlet silencing device; Described air draft guiding device is made of the smooth deflector of expanding gradually to described air draft silencing apparatus around the air outlet of described cooling tower, described air draft silencing apparatus is arranged on the air outlet top of described cooling tower, and described air draft silencing apparatus is made up of some horizontal impedance complex noise elimination unit; Described some air drafts are obliquely installed above described air draft silencing apparatus every gobo, describedly are made up of a side metal blind plate and a side metal perforated plate and the sound-absorbing material that is enclosed between the two every the gobo unit.
2. a kind of induced cooling tower silencing apparatus as claimed in claim 1 is characterized in that: sidewall is provided with the reactive muffling sheet around the air inlet of described wind inlet silencing device.
3. a kind of induced cooling tower silencing apparatus as claimed in claim 1 is characterized in that: described reactive muffling unit is made up of the metal perforated plate in front, the metal blind plate at the back side and the cavity that forms between the two.
4. a kind of induced cooling tower silencing apparatus as claimed in claim 2 is characterized in that: described reactive muffling unit is made up of the metal perforated plate in front, the metal blind plate at the back side and the cavity that forms between the two.
5. as claim 1 or 2 or 3 or 4 described a kind of induced cooling tower silencing apparatus, it is characterized in that: each described resistance noise reduction unit comprises frame and the some slice resistance noise reduction sheets of arranged vertical in described frame at interval, and the described resistance noise reduction sheet of each sheet is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the described double layer of metal orifice plate.
6. as claim 1 or 2 or 3 or 4 described a kind of induced cooling tower silencing apparatus, it is characterized in that: each described impedance complex unit is made up of resistance frame and plurality of resistive anechoic sheet, described plurality of resistive anechoic sheet is vertical being plugged in the described resistance frame in interval in a row, described resistance frame is made up of the metal blind plate of outer surface, the metal perforated plate of inner surface and the cavity that forms between the two, and the described resistance noise reduction sheet of each sheet is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the described double layer of metal orifice plate.
7. a kind of induced cooling tower silencing apparatus as claimed in claim 5, it is characterized in that: each described impedance complex unit is made up of resistance frame and plurality of resistive anechoic sheet, described plurality of resistive anechoic sheet is vertical being plugged in the described resistance frame in interval in a row, described resistance frame is made up of the metal blind plate of outer surface, the metal perforated plate of inner surface and the cavity that forms between the two, and the described resistance noise reduction sheet of each sheet is made up of double layer of metal orifice plate and the sound-absorbing material that is enclosed between the described double layer of metal orifice plate.
8. as claim 1 or 2 or 3 or 4 or 7 described a kind of induced cooling tower silencing apparatus, it is characterized in that: the angle of inclination of each described air draft between gobo and described air draft silencing apparatus is 30～150 °.
9. a kind of induced cooling tower silencing apparatus as claimed in claim 5 is characterized in that: the angle of inclination of each described air draft between gobo and described air draft silencing apparatus is 30～150 °.
10. a kind of induced cooling tower silencing apparatus as claimed in claim 6 is characterized in that: the angle of inclination of each described air draft between gobo and described air draft silencing apparatus is 30～150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791953U CN201199132Y (en) | 2008-02-26 | 2008-02-26 | Mechanical-draft cooling tower muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200791953U CN201199132Y (en) | 2008-02-26 | 2008-02-26 | Mechanical-draft cooling tower muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199132Y true CN201199132Y (en) | 2009-02-25 |
Family
ID=40450287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200791953U Expired - Lifetime CN201199132Y (en) | 2008-02-26 | 2008-02-26 | Mechanical-draft cooling tower muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199132Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607294A (en) * | 2011-09-16 | 2012-07-25 | 厦门嘉达环保建造工程有限公司 | Cooling tower silencing structure |
| CN102679761A (en) * | 2012-05-10 | 2012-09-19 | 上海交通大学 | Ventilation and sound reduction combined system of sound barrier of power plant cooling tower |
| CN102900708A (en) * | 2012-11-15 | 2013-01-30 | 江苏中联风能机械有限公司 | Large air-cooling fan sheet muffling device |
| CN103471420A (en) * | 2013-09-23 | 2013-12-25 | 北京中亚康源环保工程有限公司 | Noise control device for air inlet of large machine ventilation cooling tower |
| CN105571345A (en) * | 2014-10-14 | 2016-05-11 | 厦门嘉达环保建造工程有限公司 | Noise eliminating structure of natural ventilation cooling tower |
| CN107202501A (en) * | 2016-03-18 | 2017-09-26 | 厦门嘉达环保建造工程有限公司 | Centralized cooling tower ventilation noise reduction system |
-
2008
- 2008-02-26 CN CNU2008200791953U patent/CN201199132Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607294A (en) * | 2011-09-16 | 2012-07-25 | 厦门嘉达环保建造工程有限公司 | Cooling tower silencing structure |
| CN102679761A (en) * | 2012-05-10 | 2012-09-19 | 上海交通大学 | Ventilation and sound reduction combined system of sound barrier of power plant cooling tower |
| CN102900708A (en) * | 2012-11-15 | 2013-01-30 | 江苏中联风能机械有限公司 | Large air-cooling fan sheet muffling device |
| CN103471420A (en) * | 2013-09-23 | 2013-12-25 | 北京中亚康源环保工程有限公司 | Noise control device for air inlet of large machine ventilation cooling tower |
| CN103471420B (en) * | 2013-09-23 | 2015-03-18 | 北京中亚康源环保工程有限公司 | Noise control device for air inlet of large machine ventilation cooling tower |
| CN105571345A (en) * | 2014-10-14 | 2016-05-11 | 厦门嘉达环保建造工程有限公司 | Noise eliminating structure of natural ventilation cooling tower |
| CN105571345B (en) * | 2014-10-14 | 2018-04-20 | 厦门嘉达环保建造工程有限公司 | Cooling stack noise elimination structure |
| CN107202501A (en) * | 2016-03-18 | 2017-09-26 | 厦门嘉达环保建造工程有限公司 | Centralized cooling tower ventilation noise reduction system |
| CN107202501B (en) * | 2016-03-18 | 2023-04-14 | 厦门嘉达环保科技有限公司 | Centralized cooling tower ventilation noise reduction system |
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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: 20090225 |
|
| CX01 | Expiry of patent term |