CN201582843U - Coking proof secondary air guiding device for station boiler - Google Patents
Coking proof secondary air guiding device for station boiler Download PDFInfo
- Publication number
- CN201582843U CN201582843U CN2009202595054U CN200920259505U CN201582843U CN 201582843 U CN201582843 U CN 201582843U CN 2009202595054 U CN2009202595054 U CN 2009202595054U CN 200920259505 U CN200920259505 U CN 200920259505U CN 201582843 U CN201582843 U CN 201582843U
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- CN
- China
- Prior art keywords
- coking
- boiler
- plate
- side wall
- guiding device
- Prior art date
- 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 - Fee Related
Links
- 238000004939 coking Methods 0.000 title claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 6
- 240000004282 Grewia occidentalis Species 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
Images
Abstract
The utility model provides a coking proof secondary air guiding device for a station boiler, which is provided with a framework comprising a bottom plate (5), a vent-hole plate (1) and two lateral plates (4), and is characterized in that a plurality of flow guiding plates (2) connected in series by a connecting plate (3), distributed at intervals and mounted obliquely with the vent-hole plate (1) are arranged between the two lateral plates (4). When in use, the device is mounted in a four-corner air chamber of the boiler, and the secondary air enters the firebox in the direction in deflexion with the front and the rear walls instead of in the original direction vertical to the front and the rear walls, thereby solving the problem that the primary air flushes the side wall, alleviating the extrusion of the central area to the airflow on the two sides and the flushing of the pulverized coal airflow to the side wall, relieving the coking of the side wall, avoiding loss caused by stoppage for the occasion, and improving both the on-load capability and the economical efficiency of the boiler.
Description
Technical field
The utility model belongs to the thermal power field of engineering technology, refers in particular to a kind of station boiler anti-coking that can effectively alleviate the side wall coking problem of boiler furnace and encircles secondary wind guiding device down.
Background technology
Influenced by the coal marketization, in recent years, each station boiler burning coal is the off-design coal significantly, boiler is in economy, stability, a lot of problems have appearred in the security aspect, one of them comparatively distinct issues are boiler cokes, particularly in W type flame boiler series, account for the W type flame boiler of the FW technology (U.S.'s Foster Wheeler technology) of larger proportion, because of design coal is the anthracite that is difficult to burn, lay a large amount of wall with refractory lining, refracto in the burner hearth, using high sulphur content, during the coal of low ash smelting point, around the burner hearth especially before the middle part arch district, the very easily coking of back wall.And the consequence of coking is very easily to cause Jiao that collapses, in case Jiao that collapses just can cause fire extinguishing, and injures the water-cooling wall of furnace hopper, has a strong impact on the safe and stable operation of unit and electrical network.Be control or slow down coking trend, power plant's both walls burner of often stopping transport, but the on-load ability and the economy of boiler caused very big influence, can not tackle the problem at its root.
Summary of the invention
The technical problems to be solved in the utility model is, problem at the easy coking of FW technology W type flame boiler side wall, in the boiler secondary air air compartment, set up secondary wind guiding device under the station boiler anti-coking arch,, strengthen the security and stability of boiler in the hope of slowing down the disease of side wall coking.
Technical solution of the present utility model is, the station boiler anti-coking arch of being set up is secondary wind guiding device down, has one by base plate 5, ventilation orifice plate 1 and two frameworks that side plate 4 is formed, in this framework, described base plate 5 is to be positioned at the bottom naturally, two side plate 4 correspondences are erected in the two ends of described base plate 5, and described ventilation orifice plate 1 intersects on the two blocks of side plates 4 join and the base plate 5 as rectangular the covering of backboard.Its technical characterstic is, it is evenly spaced apart fixedly to be in series with polylith by a plate 3 on the ventilation orifice plate 1 between described two blocks of side plates 4, is the oblique angle with ventilation orifice plate 1 and installs so can change the deflector 2 of secondary wind jet direction in the station boiler running.
The station boiler anti-coking arch that constitutes thus is secondary wind guiding device down, is installed in respectively during use in the air compartment in four jiaos in station boiler cross section, can make secondary wind change the angle that it injects burner hearth by deflector.
Operation principle of the present utility model is: secondary wind changes deflection front-back wall direction into by traditional former vertical front-back wall direction and enters burner hearth when hot operation, so its effect has produced following variation:
1, the side wall burner is sprayed into after wind coal dust of lower hearth and secondary wind mixes, toward the burner hearth middle part or vertical front-back wall direction motion, solve the problem that wind of side washes away side wall.
2, make secondary wind direction central area transfer movement, slow down the extruding of central area, slow down central area breeze airflow washing away side wall to two sidewinds.
The beneficial effects of the utility model are:
1), can effectively alleviate general mood stream to directly the washing away of side wall, slowed down the central area coal dust simultaneously the diffusion of side wall washed away, alleviated the side wall coking;
2), avoided the on-load ability and the economy of boiler being improved for handling the loss that coking problem stoppage in transit side burner causes.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the utility model, is denoted as among the figure:
1-ventilation orifice plate, the 2-deflector,
The 3-connecting plate, the 4-side plate,
The 5-base plate.
The specific embodiment
The station boiler anti-coking arch of present embodiment is secondary wind guiding device down, adopts the template steel of commercially available thick 4mm to tailor deflector 2 and connecting plate 3, and is connected with base plate, ventilation orifice plate and side plate.Wherein the specification of base plate 5 is 1600mm * 2500mm, and the specification of side plate 4 is 2500mm * 2000mm, and the specification of ventilation orifice plate 1 is 2000mm * 1600mm.Referring to Fig. 1, they assemble by such scheme, get promptly that 4 two correspondences of side plate are erected in the two ends of base plate 5 and with affixed with the two ends vertical angle of base plate 5 respectively.Getting a ventilation orifice plate 1 covers to intersect as the rectangle backboard and forms framework on the two blocks of side plates 4 join and the base plate 5.On the ventilation orifice plate 1 between two blocks of side plates 4, adopt connecting plate 5 deflectors 2 of 3 series connection then and these 5 deflectors 2 are fixed on the base plate 5 one by one.These 5 deflectors 2 and side plate 4 are parallel and be evenly spaced apart, spacing 320mm, and the specification of deflector 2 is 2000mm * 550mm, also adopts the template steel of commercially available thick 4mm to tailor.And every deflector 2 and base plate 5 all are 75 ° of angles of ∠ of tilting to the burner hearth center position.And the specification of the connecting plate 3 that is adopted is 1600mm * 25mm, and commercially available 5mm band steel is tailored.Thus the station boiler anti-coking of this embodiment of Gou Chenging arch down secondary wind guiding device once in the subcritical W flame boiler of DG1025/18.2-II14 type of the FW technology manufacturing of Hunan China one tame power plant, carried out installation test, result of the test shows and reaches designing requirement fully.
Claims (1)
1. a station boiler anti-coking encircles secondary wind guiding device down, has one by base plate (5), the framework that ventilation orifice plate (1) and two blocks of side plates (4) are formed, in this framework, described base plate (5) is positioned at the bottom, two blocks of side plates (4) correspondence is erected in the two ends of described base plate (5), described ventilation orifice plate (1) intersects on the two blocks of side plates (4) join and the base plate (5) as rectangular the covering of backboard, it is characterized in that, ventilation orifice plate (1) between described two blocks of side plates (4) goes up that fixedly to be in series with polylith by a plate (3) evenly spaced apart, is the deflector (2) of oblique angle installation with ventilation orifice plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202595054U CN201582843U (en) | 2009-12-04 | 2009-12-04 | Coking proof secondary air guiding device for station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202595054U CN201582843U (en) | 2009-12-04 | 2009-12-04 | Coking proof secondary air guiding device for station boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582843U true CN201582843U (en) | 2010-09-15 |
Family
ID=42724844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202595054U Expired - Fee Related CN201582843U (en) | 2009-12-04 | 2009-12-04 | Coking proof secondary air guiding device for station boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847164A (en) * | 2015-04-02 | 2015-08-19 | 黄思颖 | Typhoon prevention device |
| CN108253446A (en) * | 2017-12-01 | 2018-07-06 | 华中科技大学 | A kind of boiler furnace structure of flow-guiding type high temperature corrosion resistance anti-coking |
-
2009
- 2009-12-04 CN CN2009202595054U patent/CN201582843U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847164A (en) * | 2015-04-02 | 2015-08-19 | 黄思颖 | Typhoon prevention device |
| CN104847164B (en) * | 2015-04-02 | 2017-09-08 | 黄思颖 | A kind of typhoon protection method |
| CN108253446A (en) * | 2017-12-01 | 2018-07-06 | 华中科技大学 | A kind of boiler furnace structure of flow-guiding type high temperature corrosion resistance anti-coking |
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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: SCIENTIFIC RESEARCH INSTITUTE OF HU'NAN ELECTRIC P Free format text: FORMER OWNER: HUNAN INSTITUTE OF POWER COMPANY EXPERIMENT Effective date: 20121101 Owner name: HUNAN XIANGDIAN BOILER PRESSURE VESSEL EXAMINATION Free format text: FORMER OWNER: HUNAN XIANGDIAN BOILER PRESSURE VESSEL EXAMINATION CENTER CO., LTD. Effective date: 20121101 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121101 Address after: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee after: Science Research Institute of Hunan Electric Power Co., Ltd. Patentee after: Hunan Xiangdian Boiler Pressure Vessel Examination Center Co., Ltd. Patentee after: State Grid Corporation of China Address before: 410007 No. 79 hydroelectric power street, east pond, Hunan, Changsha Patentee before: Hunan Institute of Power Company Experiment Patentee before: Hunan Xiangdian Boiler Pressure Vessel Examination Center Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20181204 |