CN2615515Y - Large fuel & gas boiler chimney noise supressor - Google Patents
Large fuel & gas boiler chimney noise supressor Download PDFInfo
- Publication number
- CN2615515Y CN2615515Y CN 03206896 CN03206896U CN2615515Y CN 2615515 Y CN2615515 Y CN 2615515Y CN 03206896 CN03206896 CN 03206896 CN 03206896 U CN03206896 U CN 03206896U CN 2615515 Y CN2615515 Y CN 2615515Y
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- CN
- China
- Prior art keywords
- tube wall
- inner tube
- sound
- barrel wall
- sound absorption
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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 large scale fuel gas boiler chimney muffler, which is characterized in that muffler comprises an outer barrel wall and an inner barrel wall. The two ends of the outer barrel wall are respectively provided with a flange that is connected with the chimney, the inner barrel wall is supported in the outer barrel wall by a muscle board, a plurality of muffling holes are arranged on the inner barrel wall. The utility model is provided with an inner and an outer barrel wall according to Helmholz resonance cavity sound absorption theory and the multi-holes sound absorption theory and a plurality of sound absorption holes are provided on the inner barrel wall of a segment of gas current channel. Because the sound absorption holes communicate with the empty cavity whose outside is sealed, the hole diameter of the sound absorption has a certain qualitative air column, the gas molecule in the hole diameter reciprocates like a piston when excited by the sound wave and generating vibration, because of the effect of the friction and the damp, a part of the incident sound can be consumed, thereby achieving the effect of sound absorption effectively. The utility model can be widely used for the sound absorption and noise reduction of the large scale fuel gas boiler chimney.
Description
Technical field
The utility model relates to a kind of noise reducing apparatus, particularly about a kind of large-scale oil-burning gas-fired boiler chimney silencer.
Background technology
Large-scale oil-burning gas-fired boiler chimney noise is mainly produced by combustion fan noise, burner injection noise and burner hearth combustion noise, its noise A sound level can reach more than the 90dBA, noise is based on medium and low frequency, be broadband character, because medium and low frequency noise transmission distance, transmission capacity is strong, and is serious to people's influence, and not having special-purpose large-scale oil-burning gas-fired boiler chimney silencer at present, country is to boiler noise also infinitary value standard.In order to reduce the influence that this noise produces, the silencer that existing others are used is used for large-scale oil-burning gas-fired boiler chimney, has the problem of two aspects, and the one, medium and low frequency is eliminated the noise effective, and drag losses is big; The 2nd, medium and low frequency noise elimination weak effect, can not satisfy the noise elimination requirement.
Summary of the invention
At the problems referred to above, it is very little that the purpose of this utility model provides a kind of noise reducing apparatus drag losses, the large-scale oil-burning gas-fired boiler chimney silencer that medium and low frequency noise elimination effect is splendid.
For achieving the above object, the utility model is taked following technical scheme: a kind of large-scale oil-burning gas-fired boiler chimney silencer, it is characterized in that: it comprises outer tube wall and inner tube wall, the two ends of described outer tube wall are respectively arranged with and chimney flange connecting dish, described inner tube wall is supported in the described outer tube wall by gusset, and described inner tube wall is provided with some sound attenuation holes.
Described outer tube wall middle part is cylindrical, two ends are the taper type that shrinks gradually, described ring flange is arranged on the end of described two frustums, described inner tube wall is cylindrical, be provided with one " ten " font gripper shoe in it, the surface of described " ten " font gripper shoe is the mask that zinc-plated orifice plate is made, and folder is provided with sound-absorbing material in the described mask.
The gusset that is arranged between the described inside and outside barrel is four, and it is extending axially at radial equipartition.
Sound attenuation hole on the described inner tube wall is arranged in 1/3 scope of described inner tube wall middle part.
The radial section of described inside and outside barrel all is square, described outer tube wall and inner tube wall two ends link into an integrated entity, and two ends connect the square end of a hemispherical dome interface respectively, the round nose of described two interfaces connects described ring flange respectively, the bottom of described inner tube wall and a side are extended a perforation wallboard respectively to outer tube wall, cavity between the described inside and outside barrel is divided into two absorption chambers, in the absorption chamber therein sound-absorbing material is set.
Sound attenuation hole on the described inner tube wall of another absorption chamber is arranged in 1/3 scope of described inner tube wall middle part.
The utility model is owing to take above design, it has the following advantages: 1, the utility model is according to helmholtz resonance chamber sound absorption principle and sound-absorbing porous material sound absorption principle, be provided with in one, outer tube wall, and on the inner tube wall of one section gas channel, offer some sound attenuation holes, because sound attenuation hole communicates with the outside sealed hollow, the air column that has certain mass in the sound attenuation hole aperture, when being subjected to sound wave to excite the generation vibration, the gas molecule in the aperture moves back and forth just as piston, because the effect of friction and damping, the acoustic energy of part incident is consumed, thereby can reach erasure effect effectively.2, the utility model is owing to be provided with axially extended gusset between columniform inside and outside barrel, space between two barrels is divided into some independently cavitys, therefore can reduce interference, the noise elimination effect is more better than a big cavity, can also play the effect of supporting barrel simultaneously.3, the utility model is owing to be provided with one " ten " font gripper shoe in inner tube wall, and the mask of " ten " font gripper shoe is provided with perforation, sound-absorbing material is set in mask, therefore the acoustic energy that enters sound-absorbing material on the one hand can be converted into heat energy and dissipate, can improve the high frequency failure frequency on the other hand, reach the purpose of broadening noise elimination frequency band, can also further absorb the sound wave that inside and outside barrel reflects simultaneously, make whole device acoustically effective good especially.4, the utility model is owing to a bottom and a side tube-wall at square inner tube wall have all stretched out a perforation wallboard to outer tube wall, therefore make and form two absorption chambers between the whole inside and outside barrel, in one of them absorption chamber sound-absorbing material is set, another absorption chamber is the cavity that gusset supports, so both can pass through the sound-absorbing material absorption of noise, again can be by the resonating cativty absorption of noise that forms between the inside and outside barrel, two kinds of form of sound absorption complementations, it is fine in the less local result of use of stack cross section size.The utility model is simple in structure, and it is effective to eliminate the noise, and cost is low, be connected with the chimney of boiler by ring flange very convenient, during the chimney that it can be widely used in various large-scale oil-burning gas-fired boilers is eliminated the noise.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the schematic side view of Fig. 1
Fig. 3 is that inner tube wall launches schematic diagram among Fig. 1
Fig. 4 is the A-A cross-sectional schematic of Fig. 1
Fig. 5 is the utility model embodiment two structural representations
Fig. 6 is the schematic side view of Fig. 5
Fig. 7 is the A-A cross-sectional schematic of Fig. 5
Fig. 8 is that the inner tube wall that is positioned at cavity one side among Fig. 5 launches schematic diagram
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises an outer tube wall 1, and its middle part is cylindrical, and two ends are the taper type that shrinks gradually, connect a ring flange 2 respectively in the end of two taper types, so that be connected with chimney.Support an inner tube wall 4 by four uniform vertical gussets 3 in outer tube wall 1, inner tube wall 4 is also cylindrical, has been covered with sound attenuation hole 5 on it.The scope that is provided with, density of such perforation and the sound deadening capacity of sound attenuation hole 5 are relevant, and the utility model is arranged on 1/3 place (as shown in Figure 3), inner tube wall middle part sound deadening capacity maximum with sound attenuation hole 5.Be provided with one " ten " font gripper shoe 6 (as shown in Figure 4) in inner tube wall 4, the surface of " ten " font gripper shoe 6 is the mask 7 that zinc-plated orifice plate is made, and is folded with sound-absorbing material 8 between mask 7.The noise that enters inner tube wall 4 is segmented in four cavitys by " ten " font gripper shoe 6, and the perforation 5 by inner tube wall 4 enters four cavitys between the inside and outside barrel of being cut apart by four gussets 34,1.Noise can be absorbed by sound-absorbing material 8, also can be absorbed when passing the sound attenuation hole 5 of inner tube wall 4, can also be attenuated in the resonating cativty between the inside and outside barrel 4,1, so the utility model noise elimination effect is good especially.
Shown in Fig. 5～8, the utility model can also adopt other version, such as: less for the stack cross section size, can adopt square noise elimination structure, the radial section that is inside and outside barrel 9,10 all is square, and the two ends of inside and outside simple wall 9,10 link into an integrated entity, and connects the interface 12 of a hemispherical dome respectively in two junctions, on the circular port of two interfaces 12, connect a ring flange 13 respectively, so that be connected with chimney.On inner tube wall 9 bottoms and a side tube-wall, all stretch out a wallboard to outer tube wall 10, make and form two absorption chambers between the whole inside and outside barrel 9,10, the wall of one of them absorption chamber adopts zinc-plated orifice plate 14, and between zinc-plated orifice plate 14 and outer tube wall 10, sound-absorbing material 15 is set, mainly be to absorb sound in this absorption chamber by sound-absorbing material.In another absorption chamber, be provided with gusset 16, inner tube wall 9 is supported in the outer tube wall 10, being covered with sound attenuation hole 11 on middle part 1/3 wall of this a part of inner tube wall 9, is the resonating cativty absorption of noise that forms by between the sound attenuation hole 11 that is provided with on the inner tube wall 9 and the inside and outside barrel 9,10 in this absorption chamber.
Claims (6)
1, a kind of large-scale oil-burning gas-fired boiler chimney silencer, it is characterized in that: it comprises outer tube wall and inner tube wall, the two ends of described outer tube wall are respectively arranged with and chimney flange connecting dish, and described inner tube wall is supported in the described outer tube wall by gusset, and described inner tube wall is provided with some sound attenuation holes.
2, large-scale oil-burning gas-fired boiler chimney silencer as claimed in claim 1, it is characterized in that: described outer tube wall middle part is cylindrical, two ends are the taper type that shrinks gradually, described ring flange is arranged on the end of described two frustums, described inner tube wall is cylindrical, be provided with one " ten " font gripper shoe in it, the surface of described " ten " font gripper shoe is the mask that zinc-plated orifice plate is made, and folder is provided with sound-absorbing material in the described mask.
3, large-scale oil-burning gas-fired boiler chimney silencer as claimed in claim 2, it is characterized in that: the gusset that is arranged between the described inside and outside barrel is four, and it is extending axially at radial equipartition.
4, large-scale oil-burning gas-fired boiler chimney silencer as claimed in claim 2 is characterized in that: the sound attenuation hole on the described inner tube wall is arranged in 1/3 scope of described inner tube wall middle part.
5, large-scale oil-burning gas-fired boiler chimney silencer as claimed in claim 1, it is characterized in that: the radial section of described inside and outside barrel all is square, described outer tube wall and inner tube wall two ends link into an integrated entity, and two ends connect the square end of a hemispherical dome interface respectively, the round nose of described two interfaces connects described ring flange respectively, the bottom of described inner tube wall and a side are extended a perforation wallboard respectively to outer tube wall, cavity between the described inside and outside barrel is divided into two absorption chambers, in the absorption chamber therein sound-absorbing material is set.
6, large-scale oil-burning gas-fired boiler chimney silencer as claimed in claim 5 is characterized in that: the sound attenuation hole on the described inner tube wall of another absorption chamber is arranged in 1/3 scope of described inner tube wall middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206896 CN2615515Y (en) | 2003-08-06 | 2003-08-06 | Large fuel & gas boiler chimney noise supressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03206896 CN2615515Y (en) | 2003-08-06 | 2003-08-06 | Large fuel & gas boiler chimney noise supressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615515Y true CN2615515Y (en) | 2004-05-12 |
Family
ID=34241576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03206896 Expired - Lifetime CN2615515Y (en) | 2003-08-06 | 2003-08-06 | Large fuel & gas boiler chimney noise supressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615515Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742888A (en) * | 2013-12-24 | 2014-04-23 | 华电重工股份有限公司 | Low-noise waste heat boiler |
| CN106368366A (en) * | 2016-10-26 | 2017-02-01 | 北京市劳动保护科学研究所 | Flexible stretch ceiling sound absorption structure |
| CN106703414A (en) * | 2015-09-30 | 2017-05-24 | 中建四局第建筑工程有限公司 | Noise reduction concrete vibrating bar and manufacturing method thereof |
| CN109899822A (en) * | 2016-08-31 | 2019-06-18 | 芜湖美的厨卫电器制造有限公司 | The flue component and water heater of water heater |
-
2003
- 2003-08-06 CN CN 03206896 patent/CN2615515Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742888A (en) * | 2013-12-24 | 2014-04-23 | 华电重工股份有限公司 | Low-noise waste heat boiler |
| CN103742888B (en) * | 2013-12-24 | 2016-06-29 | 华电重工股份有限公司 | A kind of Low-noise waste heat boiler |
| CN106703414A (en) * | 2015-09-30 | 2017-05-24 | 中建四局第建筑工程有限公司 | Noise reduction concrete vibrating bar and manufacturing method thereof |
| CN109899822A (en) * | 2016-08-31 | 2019-06-18 | 芜湖美的厨卫电器制造有限公司 | The flue component and water heater of water heater |
| CN106368366A (en) * | 2016-10-26 | 2017-02-01 | 北京市劳动保护科学研究所 | Flexible stretch ceiling sound absorption structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING LVCHUANG ACOUSTIC ENGINEERING CORP Free format text: FORMER OWNER: LUCHUANG ENVIRONMENT PROTECTION SUENCE AND TECHNOLOGY CO., LTD. Effective date: 20050204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050204 Address after: 102200 No. 28 Zhenxing Road, Changping County, Beijing Patentee after: Beijing Luchuang Acoustic Engineering Co., Ltd. Address before: 100080 Beijing city Haidian District No. 1 Suzhou Street Lvchuang Building 5 Patentee before: Luchuang Environmental Protection Science & Tech. Co., Ltd., Beijing |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING LVCHUANG ACOUSTIC ENGINEERING DESIGN RESEA Free format text: FORMER OWNER: BEIJING LUCHUANG ACOUSTIC ENGINEERING CO., LTD. Effective date: 20090821 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090821 Address after: No. 28, Zhenxing Road, Changping Park, Zhongguancun science and technology zone, Changping County, Beijing, China: 102200 Patentee after: Beijing Lvchuang Acoustic Engineering Design Research Institute Co., Ltd Address before: No. 28 Zhenxing Road, Changping County, Beijing, China: 102200 Patentee before: Beijing Luchuang Acoustic Engineering Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130806 Granted publication date: 20040512 |