CN108231052A - A kind of silencer for large-sized boiler air-introduced machine steel chimney - Google Patents
A kind of silencer for large-sized boiler air-introduced machine steel chimney Download PDFInfo
- Publication number
- CN108231052A CN108231052A CN201711406081.5A CN201711406081A CN108231052A CN 108231052 A CN108231052 A CN 108231052A CN 201711406081 A CN201711406081 A CN 201711406081A CN 108231052 A CN108231052 A CN 108231052A
- Authority
- CN
- China
- Prior art keywords
- porous plate
- silencer
- introduced machine
- sized boiler
- steel chimney
- Prior art date
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 230000003584 silencer Effects 0.000 title claims abstract description 31
- 229920000742 Cotton Polymers 0.000 claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011449 brick Substances 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000008030 elimination Effects 0.000 abstract description 5
- 238000003379 elimination reaction Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000012814 acoustic material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000031852 maintenance of location in cell Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
- Building Environments (AREA)
Abstract
The present invention relates to a kind of silencers for large-sized boiler air-introduced machine steel chimney,The silencer is mounted in large-sized boiler air-introduced machine steel chimney,The silencer includes common brick wall,Store up tone chamber and sound absorbing layer,The common brick wall surrounds the storage tone chamber,The storage tone chamber is honeycomb,The storage tone chamber surrounds the sound absorbing layer,The sound absorbing layer includes outer layer porous plate,Internal layer porous plate,Acoustical cotton and tinfoil sound wave reflectance coating,The acoustical cotton is equipped between the outer layer porous plate and the internal layer porous plate,The tinfoil sound wave reflectance coating is equipped between the acoustical cotton and the internal layer porous plate,The tinfoil sound wave reflectance coating is equipped with the matched through-hole in hole with the internal layer porous plate,The internal layer porous plate fits with the storage tone chamber,The silencer of the present invention,Construction cost is very low,It is simple in structure,It is corrosion-resistant,Long lifespan,Without maintenance cost,Noise elimination effect is good,Most suitable large-sized boiler steel chimney uses.
Description
Technical field
The present invention relates to a kind of silencers, and in particular to a kind of silencer for large-sized boiler air-introduced machine steel chimney.
Background technology
The throughput of large-sized boiler air-introduced machine chimney is very big, generally in 5~20 ten thousand steres per hour, and gas flow temperature
Height, gas attack are strong.
In order to which chimney is easily installed, most of producers replace original common brick smoke exhaust pipe, steel chimney using steel chimney
It not only being acted on without noise elimination, there is enhancing amplification to noise instead, not only cost is high for silencing equipment currently on the market, but also
Do not have corrosion resistant characteristic.
Invention content
It is an object of the present invention to disclose a kind of silencer for large-sized boiler air-introduced machine steel chimney, construction cost is non-
Normal low, simple in structure, corrosion-resistant, long lifespan, good without maintenance cost, noise elimination effect, most suitable large-sized boiler steel chimney makes
With.
Realizing the technical solution of the silencer of the present invention for large-sized boiler air-introduced machine steel chimney is：
A kind of silencer for large-sized boiler air-introduced machine steel chimney, the silencer are mounted on large-sized boiler air-introduced machine
In steel chimney, the silencer includes soundproof wall, storage tone chamber and sound absorbing layer, the common brick wall and surrounds the storage tone chamber, institute
Shu Chu tone chambers are honeycomb, and the storage tone chamber surrounds the sound absorbing layer, and it is more that the sound absorbing layer includes outer layer porous plate, internal layer
Orifice plate, acoustical cotton harmony wave reflection film are equipped with the acoustical cotton between the outer layer porous plate and the internal layer porous plate, described
The tinfoil sound wave reflectance coating is equipped between acoustical cotton and the internal layer porous plate, the tinfoil sound wave reflectance coating is equipped with and institute
The matched through-hole in hole of internal layer porous plate is stated, the internal layer porous plate fits with the storage tone chamber.
Further, the soundproof wall is common brick wall, and common brick wall is cheap, and is easily worked.
Further, the sound wave reflectance coating is tinfoil sound wave reflectance coating.
Further, the acoustical cotton is glass fibre acoustical cotton, and glass fibre acoustical cotton has good insulating, heat resistance
By force, the advantages that corrosion resistance is good, high mechanical strength, glass fibre acoustical cotton can buffer large-sized boiler air-introduced machine chimney well
The impact of air-flow and corrosivity.
Further, the material of the outer layer porous plate be stainless steel, the diameter of the outer layer porous plate mesoporous be less than or
Person is equal to 3 millimeters, and the material of the internal layer porous plate is stainless steel, and the diameter of the internal layer porous plate mesoporous is less than or equal to
2 millimeters, stainless steel has etch-proof characteristic, and stainless steel is acoustic material, can absorb a large amount of noise and enter and disappears
In sound device, being relatively large in diameter for outer layer porous plate mesoporous can be more prone to absorb noise, and the diameter of internal layer porous plate mesoporous is smaller
It is to cut down noise in order to which noise is allowed constantly to rebound in tone chamber is stored up.
A kind of large-sized boiler air-introduced machine steel chimney using silencer described in claim 1, including large-sized boiler air inducing
Machine steel chimney and silencer, the large-sized boiler air-introduced machine steel chimney lower section are the chamber of cuboid, and the chamber surrounds
The silencer, the chamber is equipped with air inlet, is smoke exhaust pipe, the row above the large-sized boiler air-introduced machine steel chimney
Smoke pipe is equipped with air outlet, and the material of the large-sized boiler air-introduced machine steel chimney is steel.
Beneficial effects of the present invention are：The present invention is eliminated the noise using common brick, acoustical cotton and cellular storage tone chamber's structure building
Device, noise are entered by acoustical cotton in storage tone chamber, are constantly collided in storage tone chamber, are then gone out by acoustical cotton, subtracted significantly again
The weak energy of noise, this silencer construction cost is very low, simple in structure, corrosion-resistant, long lifespan, without maintenance cost, eliminate the noise
Effect is good, and most suitable large-sized boiler steel chimney uses.
Description of the drawings
Fig. 1 is the schematic diagram using the large-sized boiler air-introduced machine steel chimney of the application silencer；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the partial view A of Fig. 2；
The title that each component is marked in figure is as follows：
1st, chamber；11st, air inlet；2nd, smoke exhaust pipe；21st, air outlet；3rd, soundproof wall；4th, tone chamber is stored up；5th, sound absorbing layer；51st, it is outer
Layer porous plate；52nd, internal layer porous plate；53rd, acoustical cotton；54th, sound wave reflectance coating.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's all other embodiments obtained without making creative work, all
Belong to the scope of protection of the invention.
Embodiment：A kind of silencer for large-sized boiler air-introduced machine steel chimney, the silencer are mounted on large-scale pot
In stove air-introduced machine steel chimney, the silencer includes common brick wall 3, storage tone chamber 4 and sound absorbing layer 5, and the chamber 1 surrounds described
Common brick wall 3, the soundproof wall 3 surround the storage tone chamber 4, and the storage tone chamber 4 is honeycomb, and the storage tone chamber 4 surrounds
The sound absorbing layer 5, the sound absorbing layer 5 include outer layer porous plate 51, internal layer porous plate 52,53 harmony wave reflection film 54 of acoustical cotton,
The acoustical cotton 53, the acoustical cotton 53 and the internal layer are equipped between the outer layer porous plate 51 and the internal layer porous plate 52
The tinfoil sound wave reflectance coating 54 is equipped between porous plate 52, the tinfoil sound wave reflectance coating 54 is equipped with porous with the internal layer
The matched through-hole in hole of plate 52, the internal layer porous plate 52 fit with the storage tone chamber 4.
The soundproof wall 3 is common brick wall, and common brick wall is cheap, and is easily worked.
The sound wave reflectance coating 54 is tinfoil sound wave reflectance coating.
It is the chamber 1 of cuboid below the large-sized boiler air-introduced machine steel chimney, the chamber 1 surrounds the noise elimination
Device, the chamber 1 are equipped with air inlet 11, are smoke exhaust pipe 2, the smoke exhaust pipe 2 above the large-sized boiler air-introduced machine steel chimney
Equipped with air outlet 21, the material of the large-sized boiler air-introduced machine steel chimney is steel.
The acoustical cotton 53 is glass fibre acoustical cotton, and glass fibre acoustical cotton has that good insulating, heat resistance be strong, anti-corruption
The advantages that corrosion is good, high mechanical strength, glass fibre acoustical cotton can buffer the air-flow of large-sized boiler air-introduced machine chimney well
Impact and corrosivity.
The material of the outer layer porous plate 51 is stainless steel, and the diameter of 51 mesoporous of outer layer porous plate is less than or equal to
3 millimeters, the material of the internal layer porous plate 52 is stainless steel, and the diameter of 52 mesoporous of internal layer porous plate is less than or equal to 2
Millimeter, stainless steel has etch-proof characteristic, and stainless steel is acoustic material, can absorb a large amount of noise and enter noise elimination
In device, being relatively large in diameter of 51 mesoporous of outer layer porous plate can be more prone to absorb noise, the diameter of 52 mesoporous of internal layer porous plate compared with
Small is to cut down noise energy in order to which noise is allowed constantly to rebound in tone chamber 4 is stored up.
The operation principle of the present embodiment：Wind is sent at the air inlet 11 of chimney by large-sized boiler air-introduced machine, due to wind speed compared with
Greatly, constantly friction generates a large amount of noises, and noise is entered in the chamber 1 of chimney, silencer is equipped in chamber 1, noise passes through outer
Layer porous plate 51 is entered in acoustical cotton 53, is carried out a sound-absorbing by acoustical cotton 53, is then entered by internal layer porous plate 52
Into storage tone chamber 4, since storage 4 one end of tone chamber is common brick wall 3, the other end is the tinfoil sound wave reflectance coating 54 with through-hole, so
Noise is constantly collided in storage tone chamber 4, and the energy of noise reduces, and then has small part noise to pass through tinfoil sound wave reflectance coating 54
Through-hole spilling is re-introduced into acoustical cotton 53, and acoustical cotton 53 carries out secondary sound-absorbing, and whole process largely reduced the energy of noise
Amount reduces noise emissions.
Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
Claims (7)
1. a kind of silencer for large-sized boiler air-introduced machine steel chimney, which is characterized in that the silencer is mounted on large size
In boiler induced-draft fan steel chimney, the silencer includes soundproof wall, storage tone chamber and sound absorbing layer, and the common brick wall surrounds described
Tone chamber is stored up, the storage tone chamber is honeycomb, and the storage tone chamber surrounds the sound absorbing layer, and it is porous that the sound absorbing layer includes outer layer
Plate, internal layer porous plate, acoustical cotton harmony wave reflection film are equipped with the suction between the outer layer porous plate and the internal layer porous plate
Sound cotton is equipped with the tinfoil sound wave reflectance coating, the tinfoil sound wave reflectance coating between the acoustical cotton and the internal layer porous plate
The matched through-hole in hole with the internal layer porous plate is equipped with, the internal layer porous plate fits with the storage tone chamber.
2. it to be used for the silencer of large-sized boiler air-introduced machine steel chimney according to claim 1, which is characterized in that the sound insulation
Wall is common brick wall.
3. it to be used for the silencer of large-sized boiler air-introduced machine steel chimney according to claim 1, which is characterized in that the sound wave
Reflectance coating is tinfoil sound wave reflectance coating.
4. it to be used for the silencer of large-sized boiler air-introduced machine steel chimney according to claim 1, which is characterized in that the sound-absorbing
Cotton is glass fibre acoustical cotton.
5. it to be used for the silencer of large-sized boiler air-introduced machine steel chimney according to claim 1, which is characterized in that the outer layer
The material of porous plate is stainless steel, and the diameter of the outer layer porous plate mesoporous is less than or equal to 3 millimeters.
6. it to be used for the silencer of large-sized boiler air-introduced machine steel chimney according to claim 1, which is characterized in that the internal layer
The material of porous plate is stainless steel, and the diameter of the internal layer porous plate mesoporous is less than or equal to 2 millimeters.
7. a kind of large-sized boiler air-introduced machine steel chimney using silencer described in claim 1, including large-sized boiler air-introduced machine
Steel chimney and silencer, the large-sized boiler air-introduced machine steel chimney lower section are the chamber of cuboid, and the chamber surrounds
The silencer, the chamber are equipped with air inlet, are smoke exhaust pipe, the smoke evacuation above the large-sized boiler air-introduced machine steel chimney
Pipe is equipped with air outlet, and the material of the large-sized boiler air-introduced machine steel chimney is steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406081.5A CN108231052B (en) | 2017-12-22 | 2017-12-22 | Silencer for steel chimney of large boiler induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711406081.5A CN108231052B (en) | 2017-12-22 | 2017-12-22 | Silencer for steel chimney of large boiler induced draft fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108231052A true CN108231052A (en) | 2018-06-29 |
| CN108231052B CN108231052B (en) | 2021-08-13 |
Family
ID=62647784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711406081.5A Active CN108231052B (en) | 2017-12-22 | 2017-12-22 | Silencer for steel chimney of large boiler induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108231052B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001653A1 (en) * | 1981-11-05 | 1983-05-11 | Tanaka, Hideharu | Exhaust silencer for internal combustion engine |
| WO1998033170A1 (en) * | 1997-01-28 | 1998-07-30 | Owens Corning | Acoustically insulated apparatus |
| JP2001350477A (en) * | 2000-06-07 | 2001-12-21 | Kyokuto Corp | Precast sound absorbing board having sound insulation effect |
| US20090045009A1 (en) * | 2007-08-15 | 2009-02-19 | Rohr, Inc. | Linear acoustic liner |
| CN202917165U (en) * | 2012-12-03 | 2013-05-01 | 哈尔滨工业大学 | A micro perforated plate cell composite noise-reducing structure |
| CN203546931U (en) * | 2013-09-05 | 2014-04-16 | 马鞍山创宁新材料科技有限公司 | Composite sound-absorbing board capable of decoupling, eliminating vibration and insulating sound |
| WO2014201558A1 (en) * | 2013-06-17 | 2014-12-24 | Gestion Soprema Canada Inc. | Sound-insulating material and method of manufacturing same |
| CN205178284U (en) * | 2015-11-09 | 2016-04-20 | 国网吉林省电力有限公司电力科学研究院 | Structure of making an uproar is fallen based on foamed aluminium metal reduces city transformer substation low -frequency noise |
| CN205185430U (en) * | 2015-11-20 | 2016-04-27 | 力尔铝业股份有限公司 | Green energy -conserving for vehicle aluminium lamina membranacea |
| CN206711599U (en) * | 2017-03-29 | 2017-12-05 | 南京理工大学 | A kind of cycle born of the same parents structure composite sound panel |
-
2017
- 2017-12-22 CN CN201711406081.5A patent/CN108231052B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983001653A1 (en) * | 1981-11-05 | 1983-05-11 | Tanaka, Hideharu | Exhaust silencer for internal combustion engine |
| WO1998033170A1 (en) * | 1997-01-28 | 1998-07-30 | Owens Corning | Acoustically insulated apparatus |
| JP2001350477A (en) * | 2000-06-07 | 2001-12-21 | Kyokuto Corp | Precast sound absorbing board having sound insulation effect |
| US20090045009A1 (en) * | 2007-08-15 | 2009-02-19 | Rohr, Inc. | Linear acoustic liner |
| CN202917165U (en) * | 2012-12-03 | 2013-05-01 | 哈尔滨工业大学 | A micro perforated plate cell composite noise-reducing structure |
| WO2014201558A1 (en) * | 2013-06-17 | 2014-12-24 | Gestion Soprema Canada Inc. | Sound-insulating material and method of manufacturing same |
| CN203546931U (en) * | 2013-09-05 | 2014-04-16 | 马鞍山创宁新材料科技有限公司 | Composite sound-absorbing board capable of decoupling, eliminating vibration and insulating sound |
| CN205178284U (en) * | 2015-11-09 | 2016-04-20 | 国网吉林省电力有限公司电力科学研究院 | Structure of making an uproar is fallen based on foamed aluminium metal reduces city transformer substation low -frequency noise |
| CN205185430U (en) * | 2015-11-20 | 2016-04-27 | 力尔铝业股份有限公司 | Green energy -conserving for vehicle aluminium lamina membranacea |
| CN206711599U (en) * | 2017-03-29 | 2017-12-05 | 南京理工大学 | A kind of cycle born of the same parents structure composite sound panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108231052B (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102607294B (en) | Cooling tower silencing structure | |
| CN209354254U (en) | For the inlet and outlet ventilation denoising device in vehicular Gas Turbine Generating Units | |
| CN203847446U (en) | Composite silencer | |
| CN204614441U (en) | Noise treatment system | |
| CN108231052A (en) | A kind of silencer for large-sized boiler air-introduced machine steel chimney | |
| CN103711338B (en) | A kind of super-silent diesel generating set machine room noise control method | |
| CN211202430U (en) | Broadband silencer for centrifugal fan | |
| CN109441593B (en) | Silicon carbide silencer | |
| CN208474122U (en) | The silencing means of Roots blower | |
| CN203242331U (en) | Low-noise boiler chimney | |
| CN209744688U (en) | High sound insulation volume sound insulation cover | |
| CN202327404U (en) | Noise reduction air pipe | |
| CN202254198U (en) | Novel micropunch plate muffler | |
| CN204139358U (en) | A kind of detachable one sound insulating house | |
| WO2021258416A1 (en) | Noise reduction silencer for fan | |
| CN204345874U (en) | Anechoic room ventilation sound-attenuating system | |
| CN207702017U (en) | A kind of ventilation shaft muffler | |
| CN109737582B (en) | Composite armoured louvered ventilating silencer | |
| CN206847037U (en) | A kind of coal exhaust blower noise reduction system | |
| CN203517840U (en) | Vibration isolation and noise reduction pulse tank | |
| CN201730657U (en) | Environment-friendly purification muffler | |
| CN203384008U (en) | Compound vacuum exhaust silencer | |
| CN205917900U (en) | A high -efficient acoustic celotex board for students' dormitory | |
| CN220581981U (en) | High-temperature high-pressure gas emission silencing device | |
| CN211116828U (en) | double-R type ventilation silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A muffler for steel chimney of induced draft fan of large boiler Effective date of registration: 20211229 Granted publication date: 20210813 Pledgee: China Construction Bank Corporation Gaozhou sub branch Pledgor: GAOZHOU CHUANGJIAN CASTING CO.,LTD. Registration number: Y2021980017020 |