CN202470088U - Chimney silencer of gas-fired boiler - Google Patents
Chimney silencer of gas-fired boiler Download PDFInfo
- Publication number
- CN202470088U CN202470088U CN 201220044312 CN201220044312U CN202470088U CN 202470088 U CN202470088 U CN 202470088U CN 201220044312 CN201220044312 CN 201220044312 CN 201220044312 U CN201220044312 U CN 201220044312U CN 202470088 U CN202470088 U CN 202470088U
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- sound insulation
- less
- sound
- silencer
- gas fired
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Abstract
The utility model relates to a chimney silencer of a gas-fired boiler. The chimney silencer is characterized by comprising a cylindrical shell; a sound insulation outer sleeve and a sound insulation inner sleeve are concentrically arranged on the inner wall of the shell; the shell and the sound insulation outer shell are spaced by multiple partition plates, and the sound insulation outer sleeve and the sound insulation inner sleeve are also spaced by multiple partition plates; a central sound absorption device is connected in the sound insulation inner sleeve; multiple water discharge holes are respectively formed in one end of the sound insulation inner sleeve and one end of the sound insulation outer sleeve; two ends of the sound insulation inner sleeve are respectively connected with a reducing frustum-shaped interface; a flange connected with a chimney is arranged on each interface; and multiple reinforcing rib plates connected with the flange and the shell are respectively arranged on the outer wall of each frustum-shaped interface. The silencer provided by the utility model can realize insertion loss within 14-18dB (A); and the air velocity is less than 7m/s, and the resistance loss of the silencer is less than 10Pa. The chimney silencer provided by the utility model can be widely applied to the sound attenuation and noise reduction of the chimney of a gas-fired boiler.
Description
Technical field
The utility model relates to a kind of noise silencing apparatus, particularly about a kind of gas fired-boiler chimney silencer.
Background technology
General gas fired-boiler chimney noise is mainly produced by combustion fan noise, burner injection noise and burner hearth combustion noise, and its noise A sound level can reach more than the 90dBA, and noise is main with the 200Hz-800Hz medium and low frequency mostly; Be broadband character; Because medium and low frequency noise transmission distance, transmission capacity is strong, thereby causes people's health effect serious; And at present not to the gas fired-boiler chimney silencer of 200Hz-800Hz medium and low frequency noise, country is to the also unrestricted standard of boiler noise.In order to reduce the influence that this noise produces, when the silencer that existing others are used is used for the gas fired-boiler chimney, can there be following problem, the one, it is effective to eliminate the noise to 63Hz, 125Hz low frequency, and noise elimination frequency band is narrow; The 2nd, it is effective to eliminate the noise to the 200Hz-800Hz medium and low frequency, and the noise elimination drag losses is big; Three are to use the relatively poor equipment of medium and low frequency noise elimination effect, can not satisfy the noise elimination requirement.
Summary of the invention
To the problems referred to above, it is little that the purpose of the utility model provides a kind of noise reducing apparatus drag losses, the gas fired-boiler chimney silencer that medium and low frequency noise elimination effect is good.
For realizing above-mentioned purpose; The utility model is taked following technical scheme: a kind of gas fired-boiler chimney silencer, and it is characterized in that: it comprises a cylindrical shell, said inner walls is provided with cover in a sound insulation overcoat and the sound insulation with one heart; Between said housing and the sound insulation overcoat; And be provided with at interval through some dividing plates between the cover in said sound insulation overcoat and the said sound insulation, being connected with a center sound absorber in the cover in the said sound insulation, an end of the inside and outside cover of said sound insulation is respectively arranged with some dewatering orifices; The two ends of cover connect one respectively and are convergent taper type interface in the said sound insulation, and the flange of a connection chimney is set respectively on each said interface, and the outer wall of each said taper type interface is respectively arranged with the reinforcement gusset of said flange of some connections and said housing.
Said center sound absorber is a center sound absorption post, and said center sound absorption post is conical near an end of the inside and outside cover of said sound insulation dewatering orifice, and the plurality of support that said center sound absorption post is provided with through two ends connects in the said sound insulation overlaps.
Said center sound absorption post adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 32kg/m to punching rate less than 30% orifice plate
3Centrifugally glass-wool.
Said center sound absorption post adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 48kg/m to punching rate less than 30% orifice plate
3Centrifugally glass-wool.
It is 3mm that said gripper shoe adopts thickness, and width is the steel plate of 50mm.
Said center sound absorber is the sound insulation backplate of a decussate, and the external part of each said sound insulation backplate connects the inwall of cover in the said sound insulation respectively.
It is the acoustical plate of 50mm that said sound insulation backplate adopts thickness, and said acoustical plate adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 32kg/m to punching rate less than 30% perforated plate
3Centrifugally glass-wool.
It is the acoustical plate of 50mm that said sound insulation backplate adopts thickness, and said acoustical plate adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 48kg/m to punching rate less than 30% perforated plate
3Centrifugally glass-wool.
Less than 1mm, punching rate is made less than 3% microwell plate the inside and outside cover employing of said sound insulation thickness less than 1mm, aperture.
The utility model is owing to take above technical scheme; It has the following advantages: 1, the utility model is according to microwell plate sound absorption principle and sound-absorbing porous material sound absorption principle; Be provided with an inside and outside cover of sound insulation and a housing, the inside and outside cover that wherein insulates against sound all adopts microperforated panel, because the micropore air has the viscosity resistance effect; Therefore the acoustic energy of a part of incident is consumed, thereby can reach the noise elimination effect effectively.2, the utility model is because to be provided with an end be cone shape center sound absorption post or cross sound insulation backplate at the center of cover in sound insulation, and in the center absorbs sound the mask of post or cross sound insulation backplate, to be filled with unit weight be 32kg/m
3Or 48kg/m
3Sound-absorbing materials such as centrifugally glass-wool; One side makes a part of acoustic energy that gets into sound-absorbing material be converted into heat energy and is dissipated; Can improve the high frequency failure frequency on the other hand; Therefore can reach the purpose of broadening noise elimination frequency band, the sound wave that the inside and outside cover of sound insulation is reflected is absorbed sound by the other side again, makes this silencer can realize inserting and is lost between 14～18dB (A); Air velocity is less than 7 meter per seconds, and the silencer drag losses is less than the acoustically effective of 10Pa.3, the utility model is owing to will insulate against sound inside and outside cover and housing all are arranged to cylinder barrel shaped, and the housing two ends connect as one through the chimney of flange and boiler, and it is simple in structure, and is with low cost, and it is effective to eliminate the noise.The utility model can be widely used in the noise elimination noise reduction of gas fired-boiler chimney.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is that sketch map is looked on the right side of Fig. 1
Fig. 3 is the cross-sectional schematic of Fig. 1
Fig. 4 is another example structure sketch map of the utility model
Fig. 5 is that sketch map is looked on the right side of Fig. 4
Fig. 6 is the cross-sectional schematic of Fig. 4
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is carried out detailed description.
Like Fig. 1, shown in Figure 4; The utility model comprises a cylindrical shell 1; Housing 1 inwall is provided with cover 3 in a sound insulation overcoat 2 and the sound insulation with one heart, between housing 1 and the sound insulation overcoat 2, and is provided with at interval through some dividing plates 4 between the cover 3 in sound insulation overcoat 2 and the sound insulation; Be connected with a center sound absorber in the cover 3 in the sound insulation, an end of the inside and outside cover 3,2 that insulates against sound is respectively arranged with some dewatering orifices 5,6; The two ends of cover 3 connect one respectively and are convergent taper type interface 7 in the sound insulation, and the flange 8 of a connection chimney is set respectively on each interface 7, and the outer wall of each taper type interface 7 is respectively arranged with the reinforcement gusset 9 of some adpting flanges 8 and housing 1.
Among above-mentioned each embodiment; Like Fig. 1～shown in Figure 3; The center sound absorber is a center sound absorption post 10, and sound absorption post 10 in center is taper shape 11 near an end of inside and outside cover 3,2 dewatering orifices 5,6 of insulating against sound, the inwall of cover 3 in plurality of support 12 connections that sound absorption post 10 in center is provided with through two ends are insulated against sound.
Among above-mentioned each embodiment, center sound absorption post 10 adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the mask is 32kg/m to punching rate less than 30% orifice plate
3Or 48kg/m
3Centrifugally glass-wool.
Among above-mentioned each embodiment, it is 3mm that gripper shoe 12 adopts thickness, and width is the steel plate of 50mm.
Among above-mentioned each embodiment, like Fig. 4～shown in Figure 6, the center sound absorber is the sound insulation backplate 13 of a decussate, and the external part of each sound insulation backplate 13 connects the inwall of cover 3 in the sound insulation respectively.
Among above-mentioned each embodiment, it is the acoustical plate of 50mm that sound insulation backplate 13 adopts thickness, and acoustical plate adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the mask is 32kg/m to punching rate less than 30% perforated plate
3Or 48kg/m
3Centrifugally glass-wool.
Among above-mentioned each embodiment, less than 1mm, punching rate is made less than 3% microwell plate the inside and outside cover employing thickness that insulates against sound less than 1mm, aperture.
When the utility model uses, adopt bolt to be fixedly connected on through flange 8 on the chimney of gas fired-boiler multi-form gas fired-boiler chimney silencer and get final product.
Above-mentioned each embodiment only is used to explain the utility model; Wherein the structure of each parts, connected mode etc. all can change to some extent; Every equivalents of on the basis of the utility model technical scheme, carrying out and improvement all should not got rid of outside the protection domain of the utility model.
Claims (10)
1. gas fired-boiler chimney silencer; It is characterized in that: it comprises a cylindrical shell; Said inner walls is provided with cover in a sound insulation overcoat and the sound insulation with one heart, between said housing and the sound insulation overcoat, and is provided with at interval through some dividing plates between the cover in said sound insulation overcoat and the said sound insulation; Be connected with a center sound absorber in the cover in the said sound insulation, an end of the inside and outside cover of said sound insulation is respectively arranged with some dewatering orifices; The two ends of cover connect one respectively and are convergent taper type interface in the said sound insulation, and the flange of a connection chimney is set respectively on each said interface, and the outer wall of each said taper type interface is respectively arranged with the reinforcement gusset of said flange of some connections and said housing.
2. a kind of gas fired-boiler chimney silencer as claimed in claim 1; It is characterized in that: said center sound absorber is a center sound absorption post; Said center sound absorption post is conical near an end of the inside and outside cover of said sound insulation dewatering orifice, and the plurality of support that said center sound absorption post is provided with through two ends connects in the said sound insulation overlaps.
3. a kind of gas fired-boiler chimney silencer as claimed in claim 2 is characterized in that: said center sound absorption post adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 32kg/m to punching rate less than 30% orifice plate
3Centrifugally glass-wool.
4. a kind of gas fired-boiler chimney silencer as claimed in claim 2 is characterized in that: said center sound absorption post adopts thickness less than 0.8mm, and the aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 48kg/m to punching rate less than 30% orifice plate
3Centrifugally glass-wool.
5. like claim 2 or 3 or 4 described a kind of gas fired-boiler chimney silencers, it is characterized in that: it is 3mm that said gripper shoe adopts thickness, and width is the steel plate of 50mm.
6. a kind of gas fired-boiler chimney silencer as claimed in claim 1 is characterized in that: said center sound absorber is the sound insulation backplate of a decussate, and the external part of each said sound insulation backplate connects the inwall of cover in the said sound insulation respectively.
7. a kind of gas fired-boiler chimney silencer as claimed in claim 6; It is characterized in that: it is the acoustical plate of 50mm that said sound insulation backplate adopts thickness; Said acoustical plate adopts thickness less than 0.8mm; The aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 32kg/m to punching rate less than 30% perforated plate
3Centrifugally glass-wool.
8. a kind of gas fired-boiler chimney silencer as claimed in claim 6; It is characterized in that: it is the acoustical plate of 50mm that said sound insulation backplate adopts thickness; Said acoustical plate adopts thickness less than 0.8mm; The aperture is less than 3mm, and as mask, be filled with unit weight in the said mask is 48kg/m to punching rate less than 30% perforated plate
3Centrifugally glass-wool.
9. like claim 1 or 2 or 3 or 4 or 6 or 7 or 8 described a kind of gas fired-boiler chimney silencers, it is characterized in that: less than 1mm, punching rate is made less than 3% microwell plate the inside and outside cover employing of said sound insulation thickness less than 1mm, aperture.
10. a kind of gas fired-boiler chimney silencer as claimed in claim 5 is characterized in that: less than 1mm, punching rate is made less than 3% microwell plate the inside and outside cover employing of said sound insulation thickness less than 1mm, aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220044312 CN202470088U (en) | 2012-02-10 | 2012-02-10 | Chimney silencer of gas-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220044312 CN202470088U (en) | 2012-02-10 | 2012-02-10 | Chimney silencer of gas-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202470088U true CN202470088U (en) | 2012-10-03 |
Family
ID=46918243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220044312 Expired - Lifetime CN202470088U (en) | 2012-02-10 | 2012-02-10 | Chimney silencer of gas-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202470088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
-
2012
- 2012-02-10 CN CN 201220044312 patent/CN202470088U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064173A (en) * | 2014-05-08 | 2014-09-24 | 浙江浙能嘉兴发电有限公司 | Noise reduction device for boiler plant of power station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160603 Address after: 100070, room 101, No. 619 West Fourth Ring Road, Beijing, Fengtai District Patentee after: Beijing Municipal Institute of Labour Protection Technology Development Co., Ltd. Address before: 100054 Beijing Taoranting Park Road, Xicheng District, No. 55 Patentee before: Beijing Research Inst. of Labour Protection Science |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |