CN203963900U - A kind of low noise waste heat boiler structure - Google Patents
A kind of low noise waste heat boiler structure Download PDFInfo
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- CN203963900U CN203963900U CN201420242604.2U CN201420242604U CN203963900U CN 203963900 U CN203963900 U CN 203963900U CN 201420242604 U CN201420242604 U CN 201420242604U CN 203963900 U CN203963900 U CN 203963900U
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- flat part
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- waste heat
- heat boiler
- acoustic board
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Abstract
The utility model provides a kind of low noise waste heat boiler structure, comprise boiler body (4) and be arranged on boiler body (4) and boiler chimney (3) between noise cancellation apparatus, described noise cancellation apparatus comprises: flat part (1), is connected with described boiler body (4); Tapered portion (2), its big opening end is connected with described flat part (1), and osculum end is connected with described boiler chimney (3), and the inwall of the inwall of described tapered portion (2) and described flat part (1) can reflect the sound wave that flow of flue gas produces; Noise elimination structure, be arranged in the common cavity forming of flat part and tapered portion, this device can absorption boiler inside noise, reduce the propagation of noise at boiler internal, thereby the resonance of the operatic tunes in elimination boiler, substitute existing noise-reduction method simultaneously, reduced dramatically production and the maintenance cost of equipment.
Description
Technical field
The utility model relates to a kind of waste heat boiler, and particularly a kind of low noise waste heat boiler structure, belongs to Noise cancellation technology field.
Background technology
In thermal power generation field, waste heat boiler can utilize high-temperature flue gas waste heat as thermal source, produce steam for generating, thereby the waste heat producing after making to generate electricity obtains secondary utilization and can improve generating efficiency, therefore waste heat boiler is widely used at power field.
But waste heat boiler in use tends to produce a large amount of noises, has a strong impact on periphery resident living, tend to spend a large amount of man power and materials and go to solve noise problem.Owing to can not find the reason that produces noise, therefore in the prior art, be mainly by give waste heat boiler arranged outside noise-proof wall, noise is closed, adopt the object that can effectively reach in this way noise reduction, but this way not only cost of equipment is higher, and a large amount of noises can make the inner operatic tunes that forms of waste heat boiler resonate and cause device damage, and then increased the maintenance cost of equipment.Find through further investigation, cause that waste heat boiler noise pollution mainly contains the reason of two aspects, the first produces much noise because resonance occurs being flowing in the cavity between heat exchanger tube of flue gas, and it two is the noises that can propagate waste heat boiler generation at the acoustic radiating of waste heat boiler and chimney.
For the problems referred to above, there is arranging in a kind of conical region being connected with boiler chimney at boiler the waste heat boiler of silencing apparatus, the acoustic board of this device silencing apparatus is vertically positioned in conical region side by side, but this device is in practice, because flue gas rises, wherein subsidiary flue dust is easy to gather on conical region inwall, and the inwall of conical region tilts and has angle and be unfavorable for flowing of flue gas with vertical acoustic board shape, between silencing apparatus and inwall, there is a large amount of flue dust impurity to adhere to more, thereby easily cause the perforation of silencing apparatus to block, greatly reduce soundproof effect.
Therefore research and develop a kind of noise that can absorption boiler inside, reduce the propagation of noise at boiler internal, the waste heat boiler of eliminating the operatic tunes resonance in boiler is necessary very much.
Utility model content
Technical problem to be solved in the utility model is that existing low noise waste heat boiler easily causes the perforation of silencing apparatus to be blocked, the unconspicuous technical problem of soundproof effect, thus provide a kind of inwall that can utilize repeatedly to launch the low temperature exhaust heat boiler structure of the noise of absorption boiler inside effectively to sound wave.
For solving the problems of the technologies described above, the utility model provides a kind of low noise waste heat boiler structure, comprise boiler body and be arranged on boiler body and boiler chimney between noise cancellation apparatus, described noise cancellation apparatus comprises:
Flat part, is connected with described boiler body;
Tapered portion, its big opening end is connected with described flat part, and osculum end is connected with described boiler chimney, and the inwall of described tapered portion and the inwall of described flat part can reflect the sound wave that flow of flue gas produces;
Noise elimination structure, is arranged in the common cavity forming of flat part and tapered portion.
Described noise elimination structure comprises some one side sound absorption structures that are arranged on described tapered portion inwall and described flat part inwall, and is arranged on the double-sided perforated acoustic board of the multiple spaces in described flat part.
Multiple described double-sided perforated acoustic boards be arranged in parallel side by side, and the dual-side of described double-sided perforated acoustic board is removably connected with the inwall of flat part respectively.
On the relative inwall of described flat part, be respectively arranged with inserting groove, the side of double-sided perforated acoustic board can be pegged graft and is engaged in inserting groove.
Multiple described double-sided perforated acoustic boards connect successively, the structure that is " returning " font of arranging to form inside and outside multilayer.
Spacing between adjacent two double-sided perforated acoustic boards is 0.5～2m, and the height of double-sided perforated acoustic board is 1～5m.
Described double-sided perforated acoustic board comprises liner plate and is connected to the perforated plate of described liner plate two sides, between described perforated plate and described liner plate, be formed with sound absorption cavity, on described perforated plate, be provided with some perforates, described in there is the internal lining pipe extending towards described liner plate direction in opening.
On described double-sided perforated acoustic board, be formed with multiple sound absorption districts that can absorb different frequency of sound wave; Or,
Described double-sided perforated acoustic board is formed by multiple sound absorption plate stacks that can absorb different frequency of sound wave.
The thickness of described perforated plate is 0.5～5mm, and the piercing aperture on described perforated plate is 2～10mm, and the punching rate on described perforated plate is 0.1%～1%., longitudinal degree of depth of described sound absorption cavity is 150～300mm.
Described boiler body is upwards disposed with high-pressure superheater by bottom, high pressure evaporator, low-pressure superheater, high-pressure economizer, low pressure evaporator, except oxygen evaporator and condensation water heater, described flat part is arranged at the top of described condensation water heater, described high-pressure superheater, described high pressure evaporator, described low-pressure superheater, described high-pressure economizer, described low pressure evaporator and the described cavity that removes oxygen evaporator top are provided with described double-sided perforated acoustic board along its diagonal, and the punching rate of described double-sided perforated acoustic board, aperture, thickness of slab, the thickness of described sound absorption cavity and described internal lining pipe development length are all incomplete same.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) low noise waste heat boiler structure of the present utility model, comprise boiler body and be arranged on boiler body and boiler chimney between noise cancellation apparatus, described noise cancellation apparatus comprises: flat part, is connected with described boiler body, tapered portion, its big opening end is connected with described flat part, and osculum end is connected with described boiler chimney, and the inwall of described tapered portion and the inwall of described flat part can reflect the sound wave that flow of flue gas produces, noise elimination structure, is arranged in the common cavity forming of flat part and tapered portion, by flat part being set between described boiler body and described boiler chimney, make, between described flat part and described tapered portion, sound wave is formed to multipath reflection, more be conducive to the absorption of described noise elimination structure for sound wave, reduce significantly the noise that flow of flue gas produces, thereby strengthen noise reduction, reducing furnace chamber noise outwards propagates by chimney, and the flue gas that is arranged so that of described flat part has obtained the cushion space of in rising, be conducive to the circulation of flue gas, can effectively prevent that soot build-up from causing the obstruction of noise elimination structure in tapered portion inwall, ensure the soundproof effect of waste heat boiler, structure is more reliable.
(2) low noise waste heat boiler structure of the present utility model, described noise elimination structure comprises some one side sound absorption structures that are arranged on described tapered portion inwall and described flat part inwall, and be arranged on the double-sided perforated acoustic board of the multiple spaces in described flat part, described double-sided perforated acoustic board is arranged in described flat part, can make described double-sided perforated acoustic board and described tapered portion inwall maintain an intersegmental distance, the phenomenon that prevents flue gas impurity to be attached to bullet inwall and to block flue, is conducive to the circulation of flue gas.
(3) low noise waste heat boiler structure of the present utility model, multiple described double-sided perforated acoustic boards be arranged in parallel side by side, be convenient to sound wave reflection and absorption, noise reduction is good, and the dual-side of described double-sided perforated acoustic board is removably connected with the inwall of flat part respectively, on the relative inwall of described flat part, be respectively arranged with inserting groove, the side of double-sided perforated acoustic board can be pegged graft and is engaged in inserting groove, make the equipment installation of low noise waste heat boiler of the present utility model more simple, be convenient to maintenance and the replacing of silencing apparatus.
(4) low noise waste heat boiler structure of the present utility model, also can adopt multiple described double-sided perforated acoustic boards to connect successively, the set-up mode of the structure that is " returning " font of arranging with multilayer inside and outside forming, described double-sided perforated acoustic board is parallel with burner hearth wall to be set up in parallel, be conducive to form multiple reflections, be convenient to the absorption of noise elimination structure for sound wave.
(5) low noise waste heat boiler structure of the present utility model, described double-sided perforated acoustic board comprises liner plate and is connected to the perforated plate of described liner plate two sides, between described perforated plate and described liner plate, be formed with sound absorption cavity, on described perforated plate, be provided with some perforates, simultaneously in order to increase the effective depth of perforate, in described perforate, there is the internal lining pipe extending towards described liner plate direction, be chosen in tapping and increase internal lining pipe, be equivalent to increase the thickness of slab of perforated plate, and actual plate face just mainly works to support internal lining pipe, thereby not only ensure equivalent plate thickness but also controlled plate body quality.
(6) low noise waste heat boiler structure of the present utility model, is formed with multiple sound absorption districts that can absorb different frequency of sound wave on described double-sided perforated acoustic board; Or, described double-sided perforated acoustic board is formed by multiple sound absorption plate stacks that can absorb different frequency of sound wave, perforated plate is designed to slightly different structural parameters along channel direction, and then the resonant frequency of the each several part that suitably staggers, thereby make can widen noise elimination frequency band after described double-sided perforated acoustic board overlapped in series, be more conducive to the absorption of noise.
(7) low noise waste heat boiler structure of the present utility model, described boiler body is upwards disposed with high-pressure superheater by bottom, high pressure evaporator, low-pressure superheater, high-pressure economizer, low pressure evaporator, except oxygen evaporator and condensation water heater, described flat part is arranged at the top of described condensation water heater, described high-pressure superheater, described high pressure evaporator, described low-pressure superheater, described high-pressure economizer, described low pressure evaporator and the described cavity that removes oxygen evaporator top are provided with described double-sided perforated acoustic board along its diagonal, thereby be conducive to eliminate operatic tunes resonance, in the propagation of boiler internal noise decrease, and ensure the maximum sound absorption area of described double-sided perforated acoustic board, simultaneously the punching rate of described double-sided perforated acoustic board, aperture, thickness of slab, the thickness of described sound absorption cavity and described internal lining pipe development length are all incomplete same, can be better for described high-pressure superheater, described high pressure evaporator, described low-pressure superheater, described high-pressure economizer, described low pressure evaporator, the described different characteristic frequency except oxygen evaporator and described condensation water heater carries out described double-sided perforated acoustic board to carry out different design of Structural Parameters, thereby has better ensured acoustically effective.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail below, wherein:
Fig. 1 is the schematic diagram of noise cancellation apparatus of the present utility model;
Fig. 2 is the structural representation of double-sided perforated acoustic board of the present utility model;
Fig. 3 is the schematic diagram of waste heat boiler structure of the present utility model;
Fig. 4 is double-sided perforated acoustic board sound absorption of the present utility model district schematic diagram;
Fig. 5 is the schematic diagram of sound absorption plate stack of the present utility model.
Description of reference numerals: 1-flat part, 2-tapered portion, 3-boiler chimney, 4-boiler body, 41-high-pressure superheater, 42-high pressure evaporator, 43-low-pressure superheater, 44-high-pressure economizer, 45-low pressure evaporator, 46-is except oxygen evaporator, 47-condensation water heater, 5-one side sound absorption structure, 6-double-sided perforated acoustic board, 61-liner plate, 62-perforated plate, 62a-perforate, 62b-internal lining pipe, the 63-cavity that absorbs sound, the 64-district that absorbs sound, the 65-plate that absorbs sound.
Detailed description of the invention
Below in conjunction with accompanying drawing, low noise waste heat boiler structure of the present utility model is described further.
As shown in Figures 1 and 3, the low noise waste heat boiler structure of the present embodiment, comprise boiler body 4 and be arranged on boiler body 4 and boiler chimney 3 between noise cancellation apparatus, described noise cancellation apparatus comprises: the flat part 1 being connected with described boiler body 4, tapered portion 2, its big opening end is connected with described flat part 1, and osculum end is connected with described boiler chimney 3, and be arranged on the noise elimination structure in the common cavity forming of flat part and tapered portion, the inwall of the inwall of described tapered portion 2 and described flat part 1 can reflect the sound wave that flow of flue gas produces, like this, by flat part being set between described boiler body and described boiler chimney, make, between described flat part and described tapered portion, sound wave is formed to multipath reflection, more be conducive to the absorption of described noise elimination structure for sound wave, reduce significantly the noise that flow of flue gas produces, thereby strengthen noise reduction, reducing furnace chamber noise outwards propagates by chimney, and the flue gas that is arranged so that of described flat part has obtained the cushion space of in rising, be conducive to the circulation of flue gas, can effectively prevent that soot build-up from causing the obstruction of noise elimination structure in tapered portion inwall, ensure the soundproof effect of waste heat boiler, structure is more reliable.
In a kind of embodiment of noise elimination structure, described noise elimination structure comprises some one side sound absorption structures 5 that are arranged on described tapered portion 2 inwalls and described flat part 1 inwall, and be arranged on the double-sided perforated acoustic board 6 of the multiple spaces in described flat part 1, described double-sided perforated acoustic board 6 is arranged in described flat part 1, can make described double-sided perforated acoustic board 6 maintain an intersegmental distance with described tapered portion 2 inwalls, the phenomenon that prevents flue gas impurity to be attached to the inwall of described bullet 2 and to block flue, is conducive to the circulation of flue gas.
Simultaneously, in the present embodiment, multiple described double-sided perforated acoustic boards 6 are parallel to the inboard wall of burner hearth setting at boiler minor face place side by side, be that described double-sided perforated acoustic board 6 is identical with furnace width, and the dual-side of described double-sided perforated acoustic board 6 is removably connected with the inwall of flat part 1 respectively, on the relative inwall of described flat part 1, be respectively arranged with inserting groove, the side of double-sided perforated acoustic board 6 can be pegged graft and is engaged in inserting groove, make the equipment of low noise waste heat boiler of the present utility model install more simple, be convenient to maintenance and the replacing of silencing apparatus, in this enforcement, spacing between adjacent two double-sided perforated acoustic boards 6 is 0.5～2m, the height of double-sided perforated acoustic board 6 is 1～5m.
Simultaneously, described double-sided perforated acoustic board 6 also can adopt parallel with the burner hearth wall described double-sided perforated acoustic board mode that is set up in parallel, be that multiple described double-sided perforated acoustic boards 6 connect successively, the structure that is " returning " font of arranging to form inside and outside multilayer, thereby be conducive to form multiple reflections, be convenient to the absorption of noise elimination structure for sound wave.
As shown in Figure 2, described double-sided perforated acoustic board 6 comprises liner plate 61 and is connected to the perforated plate 62 of described liner plate 61 two sides, between described perforated plate 62 and described liner plate 61, be formed with sound absorption cavity 63, on described perforated plate 62, be provided with some perforate 62a, in described perforate 62a, there is the internal lining pipe 62b extending towards described liner plate 61 directions, be chosen in tapping and increase internal lining pipe, be equivalent to increase the thickness of slab of perforated plate, and actual plate face just mainly works to support internal lining pipe, thereby not only ensure equivalent plate thickness but also controlled plate body quality.
Two kinds of structures of described double-sided perforated acoustic board 6 are described respectively below in conjunction with Figure 4 and 5, but those skilled in the art it will be appreciated that, it is not limited to this structure of double-sided perforated acoustic board, selects as long as it can be realized according to different frequency of sound wave the function absorbing.
In a kind of version, as shown in Figure 4, on described double-sided perforated acoustic board 6, be formed with multiple sound absorption districts 64 that can absorb different frequency of sound wave, like this, by form the sound absorption district in different punching rates and aperture on a single overall acoustic board, thereby meet the effective absorption to different frequency of sound wave.In addition, this single acoustic board is also convenient to transport and assembling.
In another kind of version, as shown in Figure 5, described double-sided perforated acoustic board 6 is superposeed and is formed by multiple sound absorption plates 65 that can absorb different frequency of sound wave, as detailed above, double-sided perforated acoustic board 6 is identical with furnace width, and the dual-side of described double-sided perforated acoustic board 6 is removably connected with the inwall of flat part 1 respectively, on the relative inwall of described flat part 1, be respectively arranged with inserting groove, two sides of multiple sound absorption plates 65 can be pegged graft and are engaged in inserting groove, thereby form double-sided perforated acoustic board 6.
Like this, by perforated plate is designed to slightly different structural parameters along channel direction, and then the resonant frequency of the each several part that suitably staggers, thereby make can widen noise elimination frequency band after described double-sided perforated acoustic board overlapped in series, more be conducive to the absorption of noise, the noise that throat is discharged has the sound deadening capacity of 14dB (A) on the octave band of 63Hz, can eliminate the main frequency composition of original displacement noise, factory's circle noise reaches discharge standard substantially, and the drag losses increasing is less than 30 Pa, can not cause remarkable impact to unit.
Meanwhile, in the present embodiment, the thickness of described perforated plate 62 is 0.5～5mm, and the piercing aperture on described perforated plate 62 is 2～10mm, and the punching rate on described perforated plate 62 is 0.1%～1%., longitudinal degree of depth of described sound absorption cavity 63 is 150～300mm.
As shown in Figure 3, described boiler body 4 is upwards disposed with high-pressure superheater 41 by bottom, high pressure evaporator 42, low-pressure superheater 43, high-pressure economizer 44, low pressure evaporator 45, except oxygen evaporator 46 and condensation water heater 47, described flat part 1 is arranged at the top of described condensation water heater 47, described high-pressure superheater 41, described high pressure evaporator 42, described low-pressure superheater 43, described high-pressure economizer 44, described low pressure evaporator 45 and the described cavity 48 that removes oxygen evaporator 46 tops are provided with described double-sided perforated acoustic board 6 along its diagonal, and the punching rate of described double-sided perforated acoustic board 6, aperture, thickness of slab, the thickness of described sound absorption cavity 63 and described internal lining pipe 62b development length are all incomplete same, thereby be conducive to eliminate operatic tunes resonance, in the propagation of boiler internal noise decrease, ensure the maximum sound absorption area of described double-sided perforated acoustic board 6, for the different characteristic frequency of various heat exchange pipe layer, described double-sided perforated acoustic board is carried out to different design of Structural Parameters, better ensured acoustically effective simultaneously.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.
Claims (10)
1. a low noise waste heat boiler structure, comprise boiler body (4) and be arranged on boiler body (4) and boiler chimney (3) between noise cancellation apparatus, it is characterized in that, described noise cancellation apparatus comprises:
Flat part (1), is connected with described boiler body (4);
Tapered portion (2), its big opening end is connected with described flat part (1), and osculum end is connected with described boiler chimney (3), and the inwall of the inwall of described tapered portion (2) and described flat part (1) can reflect the sound wave that flow of flue gas produces;
Noise elimination structure, is arranged in the common cavity forming of flat part and tapered portion.
2. low noise waste heat boiler structure according to claim 1, it is characterized in that: described noise elimination structure comprises some one side sound absorption structures (5) that are arranged on described tapered portion (2) inwall and described flat part (1) inwall, and be arranged on the double-sided perforated acoustic board (6) of the multiple spaces in described flat part (1).
3. low noise waste heat boiler structure according to claim 2, it is characterized in that: multiple described double-sided perforated acoustic boards (6) be arranged in parallel side by side, and the dual-side of described double-sided perforated acoustic board (6) is removably connected with the inwall of flat part (1) respectively.
4. low noise waste heat boiler structure according to claim 3, is characterized in that, on the relative inwall of described flat part (1), is respectively arranged with inserting groove, and the side of double-sided perforated acoustic board (6) can be pegged graft and is engaged in inserting groove.
5. low noise waste heat boiler structure according to claim 2, is characterized in that: multiple described double-sided perforated acoustic boards (6) connect successively, the structure that is " returning " font of arranging to form inside and outside multilayer.
6. low noise waste heat boiler structure according to claim 3, is characterized in that: the spacing between adjacent two double-sided perforated acoustic boards (6) is 0.5～2m, the height of double-sided perforated acoustic board (6) is 1～5m.
7. according to the low noise waste heat boiler structure described in claim 2-6 any one, it is characterized in that: described double-sided perforated acoustic board (6) comprises liner plate (61) and is connected to the perforated plate (62) of described liner plate (61) two sides, between described perforated plate (62) and described liner plate (61), be formed with sound absorption cavity (63), on described perforated plate (62), be provided with some perforates (62a), in described perforate (62a), there is the internal lining pipe (62b) extending towards described liner plate (61) direction.
8. low noise waste heat boiler structure according to claim 7, is characterized in that: on described double-sided perforated acoustic board (6), be formed with multiple sound absorption districts (64) that can absorb different frequency of sound wave; Or,
Described double-sided perforated acoustic board (6) is formed by multiple sound absorption plate (65) stacks that can absorb different frequency of sound wave.
9. low noise waste heat boiler structure according to claim 7, it is characterized in that: the thickness of described perforated plate (62) is 0.5～5mm, piercing aperture on described perforated plate (62) is 2～10mm, punching rate on described perforated plate (62) is 0.1%～1%, and longitudinal degree of depth of described sound absorption cavity (63) is 150～300mm.
10. low noise waste heat boiler structure according to claim 1, it is characterized in that: described boiler body (4) is upwards disposed with high-pressure superheater (41) by bottom, high pressure evaporator (42), low-pressure superheater (43), high-pressure economizer (44), low pressure evaporator (45), except oxygen evaporator (46) and condensation water heater (47), described flat part (1) is arranged at the top of described condensation water heater (47), described high-pressure superheater (41), described high pressure evaporator (42), described low-pressure superheater (43), described high-pressure economizer (44), described low pressure evaporator (45) and the described cavity (48) that removes oxygen evaporator (46) top are provided with described double-sided perforated acoustic board (6) along its diagonal, and the punching rate of described double-sided perforated acoustic board (6), aperture, thickness of slab, the thickness of described sound absorption cavity (63) and described internal lining pipe (62b) development length are all incomplete same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242604.2U CN203963900U (en) | 2014-05-13 | 2014-05-13 | A kind of low noise waste heat boiler structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420242604.2U CN203963900U (en) | 2014-05-13 | 2014-05-13 | A kind of low noise waste heat boiler structure |
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| Publication Number | Publication Date |
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| CN203963900U true CN203963900U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420242604.2U Expired - Fee Related CN203963900U (en) | 2014-05-13 | 2014-05-13 | A kind of low noise waste heat boiler structure |
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| Country | Link |
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| CN (1) | CN203963900U (en) |
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2014
- 2014-05-13 CN CN201420242604.2U patent/CN203963900U/en not_active Expired - Fee Related
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Granted publication date: 20141126 Termination date: 20190513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |