CN1563799A - Hot sound wave ash disposal means for boiler hearth - Google Patents
Hot sound wave ash disposal means for boiler hearth Download PDFInfo
- Publication number
- CN1563799A CN1563799A CN 200410017629 CN200410017629A CN1563799A CN 1563799 A CN1563799 A CN 1563799A CN 200410017629 CN200410017629 CN 200410017629 CN 200410017629 A CN200410017629 A CN 200410017629A CN 1563799 A CN1563799 A CN 1563799A
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- Prior art keywords
- sound wave
- thermoacoustic
- boiler
- boiler furnace
- heat
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- 239000004071 soot Substances 0.000 claims description 17
- 241001503991 Consolida Species 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000011214 refractory ceramic Substances 0.000 claims 1
- 239000003517 fume Substances 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013517 stratification Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001755 vocal effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Incineration Of Waste (AREA)
Abstract
The thermoacoustic sound wave ash remover for boiler hearth consists of thermoacoustic sounder and sound wave amplifier. The thermoacoustic sounder includes sucdessively resonant tube, cold end heat exchanger, thermoacoustic sheet lamination and high temperature end; and the sound wave amplifier is exponential horn. Unlike available sound wave ash remover, which has high pressure air to drive certain sounding structure and has air compressor needing outer energy source and increased structural complexity, the thermoacoustic sounder of the present invention utilizes the fume in the boiler hearth as driving source, outputs sound wave by means of simple thermoacoustic structure and amplifies the sound wave from the resonant tube to higher sound pressure level for eliminating ash. The ash remover is integrated inside the boiler system and has no outer sound wave generator.
Description
Technical field
The present invention relates to a kind of hot several ripple soot blowers that are used for boiler furnace.
Background technology
Boiler heating surface is under the situation of slight dust stratification, and the additional thermal resistance that the dust stratification layer brings also can have a strong impact on the inside and outside heat transmission of boiler heating surface.In addition, dust stratification also can further cause heating surface to reduce service life, and the quick-fried leakage phenomenon of boiler tubes is frequent, the safety and economic operation of serious harm boiler and heat exchanger.Conventional ash-blowing method comprises that steam (or compressed air) blows ash, rapping and steel ball and method such as scrubs, and facts have proved that these methods all exist some problems to some extent in actual motion.
The mechanism of sonic soot cleaning is not to rely on medium (steam or air) directly to contact heating surface to purge dust, but the sound wave that acoustic wave ash ejector produces is sent into the area of space of dust stratification, by the acoustic energy effect, making air molecule and powder dust particle produce vibration destroys, stop powder dust particle at the heating surface surface deposition, also stop combination between the particle simultaneously, make it to be in suspended state, so that flue gas taken away it or by the self gravitation sedimentation, reach the purpose of deashing.Sound wave has isotropic directivity, can evenly be covered with whole space, carries out comprehensive deashing and prevents grey fouling.Compare with traditional ash-blowing method, it is low, effective that sonic soot blowing has investment, can influence the deposit formation mechanism, prevents from and delay deposit to form, and boiler component produces the advantages such as effect of thermal stress hardly.The common form of sound wave ash remover has siren formula and whistle formula etc.Yet the common feature of these sound wave ash removers is to need a source of high pressure air drive vocal structure, and the additional air compressor that is equipped with needs external energy, and also more complicated of system architecture.Hot several wave producer then is to utilize thermal source to drive an appropriate thermal acoustic driver structure just can realize sound wave output, is amplified to certain intensity through gathering again and just can be used for ash disposal.
Summary of the invention
The purpose of this invention is to provide a kind of hot several ripple soot blowers that are used for boiler furnace.
It has heat sound acoustical generator and acoustic amplifier, heat sound acoustical generator has resonatron, cool end heat exchanger, folded, the temperature end of heat sound plate successively, be provided with thermal insulation layer in the folded outside of heat sound plate, acoustic amplifier is exponential type loudspeaker bugles, is provided with the sound wave inlet between the temperature end of heat sound acoustical generator and the exponential type loudspeaker bugle.
Present sound wave ash remover has forms such as siren formula and whistle formula, and they drive certain vocal structure by source of high pressure air, and source of the gas is then provided by air compressor, thereby needs external energy and increased the complexity of system architecture.Hot several wave producers that the present invention adopts then are to utilize thermal source (this is hands-down in boiler) as drive source, just can realize sound wave output by certain structure (i.e. the heat sound nuclear that is made of the cold and hot end heat exchanger of heat sound plate superimposition).After sound wave produces, in order to obtain higher sound pressure level, consider the sound wave of drawing from resonatron is passed through exponential type loudspeaker bugle structure, assemble amplification to reach the level that can remove dust.
Description of drawings
Accompanying drawing is the hot several ripple soot blower structural representations that are used for boiler furnace.
The specific embodiment
The hot several ripple soot blowers that are used for boiler furnace have heat sound acoustical generator and acoustic amplifier, heat sound acoustical generator has folded 3, the temperature end 4 of resonatron 1 cool end heat exchanger 2, heat sound plate successively, be provided with thermal insulation layer 5 in folded 3 outsides of heat sound plate, acoustic amplifier is an exponential type loudspeaker bugle 7, is provided with sound wave inlet 6 between the temperature end 4 of heat sound acoustical generator and the exponential type loudspeaker bugle 7.
Heat sound plate folded 3 is the boiler furnace wall with temperature end 4 junctions.The thermal source of temperature end is a boiler smoke, promptly in direct " submergence " high-temperature flue gas in burner hearth of temperature end resonatron, adds the hot end heat exchanger that heat is provided with so save in the conventional heat sound acoustical generator for input.Heat sound plate folded 3 is a ceramic porous material, has high temperature resistant and not oxidized characteristics.Exponential type loudspeaker bugle 7 is foldable type exponential type loudspeaker bugles, has dwindled its monnolithic case length, and bugle is also made with the high temperature in the anti-burner hearth by high-temperature ceramic materials.
Cool end heat exchanger (being water cooler) is arranged on the normal temperature district, cooling water is by water inlet pipe 8 and outlet pipe 9, form a relatively low temperature herein, and then form a very big temperature difference (can up to 1000 ℃) at the folded two ends of plate, be provided with that the plate of appropriate length is folded will to make the critical-temperature gradient of the thermograde at its two ends far above thermal acoustic oscillation, because of thermoacoustic effect thermal acoustic oscillation takes place and exports significantly sound wave.
The outlet of the sound wave that produces in resonatron by temperature end is incorporated in the exponential type loudspeaker bugle that is close to temperature end goes, sound wave thereby assembled amplification.Like this, just can export large amplitude sound wave at the port of export of bugle with certain frequency.According to the characteristic of sonic soot cleaning, the frequency that system's design will guarantee sound wave has reasonable dedusting effect greatly in lower frequency when the 200Hz left and right sides.In addition, the sound wave of infrasonic sound scope also has good effect to ash disposal.In view of thermoacoustic system as a resonator system, its operating frequency is directly related with physical dimension, low frequency just mean need be bigger physical dimension, so also can adopt in large-scale application scenario, and, then should not adopt time acoustic form for middle-size and small-size application scenario.
When being installed to hot several ripple soot blowers on the boiler furnace, whole high temperature distolateral (comprising partial resonance pipe and exponential type loudspeaker bugle) is placed near the boiler furnace internal protecting wall, utilizes the high-temperature flue gas mixture in the burner hearth to provide drive source for thermoacoustic system.Plate is folded all or part of position that then just is in the furnace wall of section, can directly utilize the heat-blocking action of furnace wall, for reducing scattering and disappearing of heat, can take certain reinforcement provision for thermal insulation to this furnace wall, part.After the installation, in cool end heat exchanger, lead to cooling water, just can start the work of thermoacoustic system.It should be noted that, before logical cooling water, high temperature heat in the burner hearth can be by tube wall and the folded normal temperature end that is transmitted to of plate, make cool end heat exchanger and resonatron all be in the condition of high temperature, therefore the part in burner hearth should not taked provision for thermal insulation (when system's operate as normal, thermal insulation layer is inoperative) yet.For the same reason, when design and making cool end heat exchanger, to guarantee on the technology that this heat exchanger can bear high temperature.
According to the scale of boiler, at the different parts of boiler the identical hot several ripple soot blowers of a plurality of structures are set, after each system starts working, just can in burner hearth, form an even sound field, and realize the function of online ash disposal.The output frequency of sound wave that also should guarantee each soot blower is identical or close, and the stack that helps sound wave is like this amplified, and improves sound pressure.
Claims (6)
1. hot several ripple soot blowers that are used for boiler furnace, it is characterized in that: it has heat sound acoustical generator and acoustic amplifier, heat sound acoustical generator has resonatron (1), cool end heat exchanger (2), heat sound plate folded (3), temperature end (4) successively, be provided with thermal insulation layer (5) in heat sound plate folded (3) outside, acoustic amplifier is an exponential type loudspeaker bugle (7), is provided with sound wave inlet (6) between the temperature end (4) of heat sound acoustical generator and the exponential type loudspeaker bugle (7).
2. a kind of hot several ripple soot blowers that are used for boiler furnace according to claim 1 it is characterized in that said heat sound plate folded (3) is the boiler furnace inwall with temperature end (4) junction, and thermal insulation layer (5) replace with the burner hearth wall thickness.
3. a kind of hot several ripple soot blowers that are used for boiler furnace according to claim 1, the thermal source that it is characterized in that said temperature end is a boiler smoke.
4. a kind of hot several ripple soot blowers that are used for boiler furnace according to claim 1 is characterized in that said heat sound plate folded (3) is the refractory ceramics porous material.
5. a kind of hot several ripple soot blowers that are used for boiler furnace according to claim 1 is characterized in that said exponential type loudspeaker bugle (7) is a foldable type exponential type loudspeaker bugle.
6. a kind of hot several ripple soot blowers that are used for boiler furnace according to claim 1, the material that it is characterized in that said exponential type loudspeaker bugle (7) is a high-temperature ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017629 CN1267680C (en) | 2004-04-09 | 2004-04-09 | Hot sound wave ash disposal means for boiler hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017629 CN1267680C (en) | 2004-04-09 | 2004-04-09 | Hot sound wave ash disposal means for boiler hearth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563799A true CN1563799A (en) | 2005-01-12 |
| CN1267680C CN1267680C (en) | 2006-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410017629 Expired - Fee Related CN1267680C (en) | 2004-04-09 | 2004-04-09 | Hot sound wave ash disposal means for boiler hearth |
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| Country | Link |
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| CN (1) | CN1267680C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187047A (en) * | 2011-10-04 | 2013-07-03 | 通用电气公司 | Method and systems for acoustic cleaning |
| CN105107334A (en) * | 2015-09-22 | 2015-12-02 | 东南大学 | Thermoacoustically-driven suspended particle migration and removal device |
| CN113701394A (en) * | 2020-10-23 | 2021-11-26 | 中国科学院理化技术研究所 | Thermoacoustic driving refrigerating device |
-
2004
- 2004-04-09 CN CN 200410017629 patent/CN1267680C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187047A (en) * | 2011-10-04 | 2013-07-03 | 通用电气公司 | Method and systems for acoustic cleaning |
| CN108393311A (en) * | 2011-10-04 | 2018-08-14 | Bha阿尔泰尔有限责任公司 | For the clean method and system of acoustics |
| CN105107334A (en) * | 2015-09-22 | 2015-12-02 | 东南大学 | Thermoacoustically-driven suspended particle migration and removal device |
| CN113701394A (en) * | 2020-10-23 | 2021-11-26 | 中国科学院理化技术研究所 | Thermoacoustic driving refrigerating device |
| CN113701394B (en) * | 2020-10-23 | 2022-10-28 | 中国科学院理化技术研究所 | Thermoacoustic driving refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1267680C (en) | 2006-08-02 |
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Granted publication date: 20060802 Termination date: 20120409 |