CN101672479B - Sweeping device for dust deposit in flue - Google Patents
Sweeping device for dust deposit in flue Download PDFInfo
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- CN101672479B CN101672479B CN2009103049273A CN200910304927A CN101672479B CN 101672479 B CN101672479 B CN 101672479B CN 2009103049273 A CN2009103049273 A CN 2009103049273A CN 200910304927 A CN200910304927 A CN 200910304927A CN 101672479 B CN101672479 B CN 101672479B
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- flue
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- dust
- horizontal flue
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Abstract
The invention discloses a sweeping device for dust deposit in a flue, which comprises a horizontal flue and is characterized in that a nozzle is arranged at the bottom surface of the horizontal flue; the sweeping medium inlet end of the nozzle is communicated to the sweeping distribution main pipe outside the horizontal flue; and the direction of the media jet out from the nozzle opening is nearly parallel to the bottom surface of the horizontal flue. The sweeping position of the sweeping device for dust deposit in a flue of the invention is directly arranged at the bottom of the dust accumulating area, and high-speed sweeping media are used for disturbing the inside of dust deposit so that the dust deposit can be carried away by smoke after being lifted, thus the problem of serious dust accumulation can be completely solved. The direction for jetting out the sweeping media is parallel to the bottom surface of the horizontal flue so as to reduce friction. The invention completely solves the problem of serious dust deposit in horizontal flue so as to provide good condition for safe and stable operation of boilers.
Description
Technical field
The present invention relates to the soot blower of boiler rinsing, especially a kind of blow device that cleans the dust deposit in flue of dust deposit in flue.
Background technology
Along with the maximization of boiler, the problem of the dust deposit in flue particularly problem of horizontal flue dust stratification generally all responds in that coal-powder boiler is in service.Existing soot blower is to be used for that the heating surface in the large-sized boiler is sprayed one to blow grey MEDIA FLOW, and as water, air or steam, to remove the ash that removes slag, the impact of blowing grey medium produces mechanical shock and temperature vibration, and its mendelevium is removed these adhesion layers.Known a kind of general soot blower type is the elongated retractable soot blower, described in Chinese invention patent CN1036071A, this class device has a blowpipe that can stretch. and they periodically are advanced in the boiler and therefrom withdraw from. and produce rotation simultaneously, make one or more of the happy end of blowpipe place blow grey medium nozzle and penetrate the jet that forms spirality path.This class soot blower can purge this regional heating surface, but because of its purpose mainly is the dust stratification that purges main heating surface, far away apart from the flue bottom, the dust stratification that reduces flue there is not positive effect.The most of boiler flue dust stratifications that put into operation at present all can not thoroughly effectively be removed.If dust deposit in flue is serious, the ash that collapses of might being in operation causes the combustion chamber draft big ups and downs, even causes flame-out blowing out.Big Capacity Power Plant Boilers will be in case urgent blowing out will produce impact to electrical network, and influence is dispatched.
Summary of the invention
The blow device that the purpose of this invention is to provide a dust deposit in flue can carry out disturbance to the bottom of dust stratification, and dust stratification is kicked up, and is taken away by flue gas then, can thoroughly solve the dust deposit in flue problem.
Technical scheme of the present invention is as follows:
A kind of blow device of dust deposit in flue, comprise flue, it is characterized in that: be furnished with nozzle on the bottom surface of flue, the purging that the blowing medium arrival end of nozzle is communicated to the flue outside distributes female pipe, and the medium of nozzle opening ejection and the angle of flue bottom surface parallel direction are between-10 °～0 °.
The preferred technical solution of the present invention is as follows:
Preferably, nozzle opening apart from the distance of flue bottom surface smaller or equal to 500mm.
Preferably, arrangement of nozzles is in the zone of flue bottom near the boiler center.
Preferably, the direction of the medium of nozzle opening ejection is parallel with the flue bottom surface.
Preferably, the blowing medium arrival end of each nozzle correspondence is to be connected to by connecting pipe to distribute female pipe, and female pipe is provided with control valve and shutoff type valve.
Preferably, the arranged direction of nozzle is vertical with the flue bottom surface.
Preferably, nozzle passes the position employing welded seal of flue.
Preferably, described flue is a horizontal flue.
The invention has the beneficial effects as follows: the position of purging is set directly at the bottom in dust stratification zone, with blowing medium at a high speed disturbance is carried out in the inside of dust stratification deposit, and its back of kicking up is taken away by flue gas, just can thoroughly solve the serious problem of dust stratification.The blowing medium emission direction is parallel with the flue bottom surface to reduce wearing and tearing.The present invention can thoroughly solve the serious dust stratification problem of flue, for good condition is created in boiler safety stable operation.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
The pipeline connecting figure of the blow device embodiment of Fig. 1 dust deposit in flue of the present invention.
Fig. 2 be dust deposit in flue of the present invention blow device embodiment blow grey arrangement of nozzles figure.
Fig. 3 is the grey nozzle scheme of installation that blows shown in Figure 2.
Fig. 4 is the pipeline connecting figure of one embodiment of the invention.
The specific embodiment
Specific embodiments of the invention 1, as Fig. 1, Fig. 2 and shown in Figure 3, a kind of blow device of dust deposit in flue, be different from the long soot blower that is arranged on the flue both walls usually, be by a plurality of blowing medium nozzles 2 being set in the zone 1 of the easy dust stratification in flue bottom (generally being zone) near the boiler center, nozzle 2 is provided with opening 3, the opening 3 of nozzle 2 is on the flue bottom surface, the blowing medium of ejection is parallel or approximate with the flue bottom surface parallel in the nozzle 2, for example the angle of Pen Chu medium and flue bottom surface parallel direction is between-10 °～0 °, the blowing medium arrival end of nozzle 2 distributes female pipe at the external communications of flue to the purging of flue outside, utilization is carried out disturbance by the high speed blowing medium of ejection in the opening 3 to dust stratification, its back of kicking up is taken away by flue gas, thereby thoroughly solved the serious problem of dust stratification.The line arrangement of present embodiment as shown in Figure 1, the blowing medium arrival end of each nozzle 2 correspondence is to be connected to the distribution header by connecting pipe, distributes header to be connected with distributing female the pipe, female pipe is provided with control valve and shutoff type valve.Pressure behind the aperture adjustable valve of control and regulation valve makes it to satisfy and purges needs, and stop valve is closed when purging system need overhaul, and is in open mode during the purging system operation.
Can the arranged direction of nozzle 2 is vertical with the flue bottom surface on the basis of the foregoing description, the blowing medium emission direction is parallel with the flue bottom surface, utilize the swiftly flowing flow field of blowing medium to drive dust stratification, avoid blowing medium directly to impact the flue bottom, to reduce wearing and tearing.
In order to reach better disturbance effect, and reduce wearing and tearing to flue, nozzle 2 openings 3 apart from the distance of flue bottom surface smaller or equal to 500mm.
Medium in flue is leaked out by the position that nozzle 2 passes flue, and nozzle 2 passes the position of flue can adopt welded seal, and the sealing mode is simple and reliable.
Another embodiment of the present invention, as shown in Figure 4, the blow device of dust deposit in flue is installed in the horizontal flue, description scheme is approximate identical among its structure and the embodiment 1, difference just is installed in nozzle on the bottom surface of horizontal flue, utilization is carried out disturbance by the high speed blowing medium of ejection in the device to dust stratification, its back of kicking up is taken away by flue gas, thereby thoroughly solved the serious problem of horizontal flue dust stratification.
In the foregoing description and improved procedure, blowing medium pipeline and allocation set case can by suspension and support with load transfer to miscellaneous equipment.
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (1)
1. the blow device of a dust deposit in flue, comprise horizontal flue, it is characterized in that: on the bottom surface of horizontal flue, be furnished with nozzle, the purging that the blowing medium arrival end of nozzle is communicated to the flue outside distributes female pipe, the medium of nozzle opening ejection is parallel with the horizontal flue bottom surface, nozzle opening apart from the distance of horizontal flue bottom surface smaller or equal to 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103049273A CN101672479B (en) | 2009-07-29 | 2009-07-29 | Sweeping device for dust deposit in flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103049273A CN101672479B (en) | 2009-07-29 | 2009-07-29 | Sweeping device for dust deposit in flue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672479A CN101672479A (en) | 2010-03-17 |
| CN101672479B true CN101672479B (en) | 2011-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103049273A Active CN101672479B (en) | 2009-07-29 | 2009-07-29 | Sweeping device for dust deposit in flue |
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| Country | Link |
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| CN (1) | CN101672479B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899446A (en) * | 2012-11-16 | 2013-01-30 | 重庆赛迪工业炉有限公司 | Purging device |
| CN102974582B (en) * | 2012-11-28 | 2015-06-24 | 中冶焦耐工程技术有限公司 | Pulsed nozzle for cleaning high temperature coke oven raw gas pipeline |
| CN104566412A (en) * | 2015-01-07 | 2015-04-29 | 哈尔滨锅炉厂有限责任公司 | Steam soot blowing device and method for extending bottom wrapped wall of water cooling wall of pulverized coal fired boiler |
| CN105299667A (en) * | 2015-10-22 | 2016-02-03 | 南京信息工程大学 | Soot blowing device used for circular flue of coal-fired power plant |
| CN107202334B (en) * | 2017-07-14 | 2024-01-26 | 山东省环能设计院股份有限公司 | Boiler horizontal flue bottom deposition clearance system |
| CN107883388A (en) * | 2017-10-25 | 2018-04-06 | 华电电力科学研究院 | A kind of soot blower system and ash-blowing method for π type boiler furnace arch, furnace noses |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009085498A (en) * | 2007-09-28 | 2009-04-23 | Mitsubishi Heavy Ind Ltd | Burned ash deposition prevention device and duct having the same |
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2009
- 2009-07-29 CN CN2009103049273A patent/CN101672479B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009085498A (en) * | 2007-09-28 | 2009-04-23 | Mitsubishi Heavy Ind Ltd | Burned ash deposition prevention device and duct having the same |
Non-Patent Citations (1)
| Title |
|---|
| 程新华、孟详德、陈东亚.吹扫法清除烟道积灰实践.《山东建材信息网》.2004,(第6期), * |
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|---|---|
| CN101672479A (en) | 2010-03-17 |
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