CN203116049U - Soot blowing system of boiler hot air box - Google Patents
Soot blowing system of boiler hot air box Download PDFInfo
- Publication number
- CN203116049U CN203116049U CN 201320033422 CN201320033422U CN203116049U CN 203116049 U CN203116049 U CN 203116049U CN 201320033422 CN201320033422 CN 201320033422 CN 201320033422 U CN201320033422 U CN 201320033422U CN 203116049 U CN203116049 U CN 203116049U
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- boiler
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- soot
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Abstract
The utility model relates to a soot blowing system of a boiler hot air box. The soot blowing system of the boiler hot air box comprises a plurality of combustors which are arranged on the boiler wall of a boiler in a layered mode. Each layer of combustors is provided with air boxes which correspond to the layer of combustors. Soot blowing tubes, material level detecting tubes, and pressure transmitters which are connected with analog quantity cables are arranged in each layer of air boxes. A plurality of soot blowing tubes which belong to the same layer of air boxes are connected on a same compressed air branch tube. The compressed air branch tubes of each layer of air boxes are connected with a compressed air primary tube simultaneously. According to the soot blowing system of the boiler hot air box, compressed air inside an original boiler system is used for disturbing deposited soot inside the air boxes and hot air is used for carrying the disturbed deposited soot into a hearth, and therefore blowing and cleaning the air boxes of the boiler are achieved, the problem of soot deposition in the air boxes of the coal-fired boiler is solved, the hot air boxes can be kept clean, the phenomenon of large-scale soot deposition is avoided, resistance of the air boxes is reduced, the combustors are even in air distribution, and oxygen quantity distribution inside the boiler is reasonable.
Description
Technical field
The utility model relates to a kind of boiler hot blast bellows soot blower system, belongs to field of boilers.
Background technology
In order to reduce fuel cost, the lower bunker coal of grade is adopted in some thermal power plant, low-grade coal-fired calorific value is low, and ash is higher, and a large amount of ash can make hot blast bellows dust stratification, when serious, even cause the burner air inlet to stop up, and cause oxygen amount skewness in the boiler stove hall, produce a large amount of carbon monoxide, thereby form reducing atmosphere and local coking, so that localized hyperthermia's corrosion.In addition, the bellows dust stratification seriously also can make the bellows resistance increase, and power consumption rate increases; And air preheater outlet CO concentration raising (on average about 2000ppm), calculating by conservative data 800ppm, boiler thermal output reduces by 0.32 percentage point, about unit net coal consumption rate rising 0.96g/ (kWh).
Summary of the invention
The problems referred to above that cause in order to solve low-grade colm ash height, the utility model proposes a kind of boiler hot blast bellows soot blower system, utilize the boiler factory with compressed-air actuated hot blast bellows to be blown ash, avoid a large amount of dust stratifications of bellows, reduce the bellows resistance, improve boiler thermal output.
Boiler hot blast bellows soot blower system, be included in a plurality of burners that the boiler setting higher slice is arranged, every layer of burner is provided with the bellows corresponding to this layer, it is characterized in that each layer bellows are equipped with blowing pipe, material level detector tube and are connected with the pressure transmitter of analog quantity cable, the a plurality of blowing pipes that belong to one deck bellows are connected on the same compressed air arm, and the compressed air arm of each layer bellows is connected with the female pipe of compressed air simultaneously.
Each blowing pipe has a plurality of grey holes of blowing.
It is described that to blow grey hole evenly distributed in the both sides of blowing pipe.
Described each layer compression air arm is respectively equipped with hand control valve.
Described each blowing pipe is equipped with magnetic valve.
Be connected with anti-blocking blowing pipe between the compressed air arm of described each layered material position detector tube and this layer, anti-blocking blowing pipe is provided with hand control valve and magnetic valve.
Native system utilizes the boiler factory with compressed air boiler hot blast bellows to be blown ash, solved coal-burning boiler bellows dust stratification problem, the hot blast bellows are kept clean, avoid a large amount of dust stratifications of bellows, reduce the bellows resistance, make that the burner air distribution is even, the oxygen amount distributes rationally in the stove, reduces CO and generates, and reduces coal consumption.
Description of drawings
Fig. 1 is the structural representation of boiler hot blast bellows soot blower system.
Fig. 2 represents the distribution of blowing pipe in bellows.
Fig. 3 is the blowing pipe structural representation.
Among the figure, 1-furnace wall, 2-burner, the female pipe of 3-compressed air, 4,7-manually spherical valves, 5-compressed air arm, 6-magnetic valve, 8-material level detector tube, 9-pressure transmitter, 10-blowing pipe, 11-grey hole blown, 12-anti-blocking blowing pipe, 13-anti-blocking magnetic valve; A, B, E-bellows.
The specific embodiment
Further specify the specific embodiment of the utility model boiler hot blast bellows soot blower system below in conjunction with accompanying drawing.
Fig. 1 represents that a plurality of burners 2 distribute by layer at the furnace wall 1 of boiler, and every layer of burner is provided with bellows, is expressed as bellows A, bellows B, bellows E from top to bottom respectively, and each bellows is equipped with a plurality of blowing pipes 10, material level detector tube 8 and pressure transmitter 9; The compressed air arm 5 of each layer bellows A, B, E is connected with the female pipe 3 of same compressed air.As Fig. 2, same bellows E(or A or B) be provided with a plurality of blowing pipes 10, the outer end of each blowing pipe 10 is connected on the same compressed air arm 5.As Fig. 3, each blowing pipe 10 both sides is evenly distributed a plurality of grey holes 11 of blowing.
Pressure transmitter 9 is connected with the analog quantity cable, by the analog quantity cable detected material level detector tube 8 pressure datas is transferred to the hot blast bellows and blows grey switch board, blows grey program to determine whether to carry out.After the grey instruction triggers of blowing of certain one deck, the magnetic valve 6 of this layer is opened successively automatically, and compressed air passes through successively, to bellows E(or A or B) blow ash, after an ash-blowing procedure of this layer bellows finishes, blow grey program and stop.
In order to prevent material level detector tube 8 stifled ashes, be provided with the material level detector tube in the boiler hot blast bellows soot blower system and purge program, after this procedure triggers, closed electromagnetic valve before the pressure transmitter 9, anti-blocking magnetic valve 13 is opened, and connects anti-blocking blowing pipe 12, purges 3 seconds, material level detector tube purging program stops, and magnetic valve 13 cuts out.
Claims (6)
1. boiler hot blast bellows soot blower system, be included in a plurality of burners that the boiler setting higher slice is arranged, every layer of burner is provided with the bellows corresponding to this layer, it is characterized in that each layer bellows are equipped with blowing pipe, material level detector tube and are connected with the pressure transmitter of analog quantity cable, the a plurality of blowing pipes that belong to one deck bellows are connected on the same compressed air arm, and the compressed air arm of each layer bellows is connected with the female pipe of compressed air simultaneously.
2. boiler hot blast bellows soot blower system according to claim 1 is characterized in that each blowing pipe has a plurality of grey holes of blowing.
3. boiler hot blast bellows soot blower system according to claim 2 is characterized in that described to blow grey hole evenly distributed in the both sides of each blowing pipe.
4. boiler hot blast bellows soot blower system according to claim 3 is characterized in that described each layer compression air arm is respectively equipped with hand control valve.
5. boiler hot blast bellows soot blower system according to claim 4 is characterized in that described each blowing pipe is equipped with magnetic valve.
6. according to claim 4 or 5 described boiler hot blast bellows soot blower systems, it is characterized in that being connected with anti-blocking blowing pipe between the compressed air arm of described each layered material position detector tube and this layer, anti-blocking blowing pipe is provided with hand control valve and magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033422 CN203116049U (en) | 2013-01-23 | 2013-01-23 | Soot blowing system of boiler hot air box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033422 CN203116049U (en) | 2013-01-23 | 2013-01-23 | Soot blowing system of boiler hot air box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203116049U true CN203116049U (en) | 2013-08-07 |
Family
ID=48896387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320033422 Expired - Lifetime CN203116049U (en) | 2013-01-23 | 2013-01-23 | Soot blowing system of boiler hot air box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203116049U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075334A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Method and device used for soot-blowing of secondary air compartment of opposed firing boiler |
| CN109084323A (en) * | 2018-08-17 | 2018-12-25 | 浙江浙能温州发电有限公司 | A kind of big bellows accumulatingdust baffle plate device |
-
2013
- 2013-01-23 CN CN 201320033422 patent/CN203116049U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075334A (en) * | 2014-06-18 | 2014-10-01 | 华电电力科学研究院 | Method and device used for soot-blowing of secondary air compartment of opposed firing boiler |
| CN104075334B (en) * | 2014-06-18 | 2016-08-31 | 华电电力科学研究院 | A kind of ash-blowing method for opposed firing boiler secondary air chamber and device |
| CN109084323A (en) * | 2018-08-17 | 2018-12-25 | 浙江浙能温州发电有限公司 | A kind of big bellows accumulatingdust baffle plate device |
| CN109084323B (en) * | 2018-08-17 | 2023-09-26 | 浙江浙能温州发电有限公司 | Dust deposit baffle device is prevented to big bellows |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |