CN109489032A - A kind of Wind cap for boiler for strengthening Flow of Goods and Materials - Google Patents
A kind of Wind cap for boiler for strengthening Flow of Goods and Materials Download PDFInfo
- Publication number
- CN109489032A CN109489032A CN201811469585.6A CN201811469585A CN109489032A CN 109489032 A CN109489032 A CN 109489032A CN 201811469585 A CN201811469585 A CN 201811469585A CN 109489032 A CN109489032 A CN 109489032A
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- CN
- China
- Prior art keywords
- core pipe
- outer cover
- goods
- materials
- boiler
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses a kind of Wind cap for boiler for strengthening Flow of Goods and Materials, including outer cover and core pipe, wherein, limited post is provided at the top of core pipe, location hole is offered at the top of outer cover, core pipe is socketed in outer cover, limited post is inserted in positioning hole, and toroidal cavity is formed between core pipe and outer cover, the side of outer cover is circumferentially arranged several deflector holes, wherein, the central axis of each deflector hole deflects in same direction, several throttle orifices are provided on the side wall of core pipe, material is successively through core pipe, it is flowed out after throttle orifice and toroidal cavity from deflector hole, the Wind cap for boiler can effectively improve occur in use to blowing abrasion and the bad problem of fluidisation.
Description
Technical field
The present invention relates to a kind of Wind cap for boiler, and in particular to a kind of Wind cap for boiler for strengthening Flow of Goods and Materials.
Background technique
CFB Boiler Operation needs to set up stable Matter Transfer, and the blast cap on air distribution plate is for realizing this
One process has great influence.It must assure that air is evenly distributed on entire section of burner hearth when boiler design, it is equal in material
Under the premise of uniform flow, fluidisation dead zone is avoided, prevents the accidents such as air compartment leakage slag, fluidisation unevenness, bed coking.The kind of blast cap
Class is more, and being once used widely at home has pig tail type blast cap, Γ shape blast cap, flechette-type blast cap, cylindrical blast cap, bell shape blast cap
Etc. several.Pig tail type blast cap is originated from Finland Ahlstrom company, and the blast cap upper section nozzle and lower section nozzle access furnace vertically respectively
Thorax bottom and air compartment, middle section are horizontally installed in air distribution plate wearing-proof refractory material layer.This blast cap little wear, but horizontal segment is easy
Accumulated slag blocking, and resistance design is bigger than normal, now using less.
Γ shape blast cap belongs to wind cap, and as single hole blast cap, aperture is larger, can also be divided according to the difference of exit angle
For square and inclination shape.This blast cap resistance is relatively low, and cloth wind is irregular to easily cause leakage slag, and resistance is only in actual motion
3kPa, it is easy to leakage slag occur.In addition, Г type blast cap is higher to installation requirement, needs to be proofreaded one by one, otherwise easily occur
It is mutual to abrasion is blown between blast cap, it is mostly used on a small quantity as the wind cap near slag-drip opening at present.
Flechette-type blast cap is also wind cap one kind, which is made of main air hose and diplopore or porous jet pipe, every hole
It is blown obliquely at an angle with cap body, from the point of view of actually using situation, the abrasion of flechette-type blast cap is lighter, and installation requirement does not have Γ
Shape blast cap is stringent, but still there is leakage slag phenomenon.
Cylindrical blast cap largely uses in Small and Medium Circulating Fluidized Bed Boiler, and this cap structure is simple, easily fabricated, resistance
Power is moderate, but arranges that quantity is more, blast cap spacing is small, and exit orifice is easy to wear, deformation, and when fluidized wind fluctuation, some materials can pass through exit orifice
Resorption enters air compartment or blocking blast cap, leads to blast cap deficiency in draught scaling loss, and service life is short, maintenance workload is big, this at present
Blast cap is only applied in large circulating fluidized bed boiler external bed and material returning device.
Bell-shaped blast cap is at present using a kind of more blast cap, which is made of core pipe and outer cover two parts, core
Pipe is fixed across air distribution plate, and blast cap is fixed on the upper end of core pipe, and the outer cover surrounding of blast cap is provided with several exit orifice.Due to aperture compared with
Greatly, it therefore is not easy to be prematured by solids, blast cap is generally cast.Although bell-shaped blast cap has many advantages, such as Wear-resistance leak-proof slag,
Since the limitation of traditional bell-jar structure design occurs blast cap in use, to blowing, abrasion, fluidisation is bad etc. asks
Topic.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of boiler air for strengthening Flow of Goods and Materials is provided
Cap, the Wind cap for boiler can effectively improve occur in use to blowing abrasion and the bad problem of fluidisation.
In order to achieve the above objectives, the Wind cap for boiler of the present invention for strengthening Flow of Goods and Materials includes outer cover and core pipe, wherein
It is provided with limited post at the top of core pipe, location hole is offered at the top of outer cover, core pipe is socketed in outer cover, and limited post is inserted in fixed
In the hole of position, and toroidal cavity is formed between core pipe and outer cover, the side of outer cover is circumferentially arranged there are several deflector holes, wherein each
The central axis of deflector hole deflects in same direction, several throttle orifices is provided on the side wall of core pipe, material is successively through core pipe, throttling
It is flowed out behind hole and toroidal cavity from deflector hole.
It is provided with positioning groove on the inner wall of location hole, spacer pin is provided on the side wall of limited post, spacer pin is inserted in
In the positioning groove.
The aperture of location hole is 20mm.
The central axis of deflector hole tangentially deflects 1 °~60 °.
The central axis of deflector hole tangentially deflects 20 °.
The aperture wind speed of deflector hole is 20m/s~60m/s.
The invention has the following advantages:
When specific operation, the side of outer cover is circumferentially arranged to be had the Wind cap for boiler of the present invention for strengthening Flow of Goods and Materials
Several deflector holes, are provided with several throttle orifices on the side wall of core pipe, and material is successively after core pipe, throttle orifice and toroidal cavity from leading
Discharge orifice outflow, wherein the central axis of each deflector hole deflects in same direction, thus avoid between blast cap to blowing, strengthen simultaneously
The flowing of material reduces bed material high-temperature coking risk.In addition, only limited post need to be inserted and fixed in positioning hole during installation
, it is easy for installation, the maintenance cost of post facility is reduced, while both can be used for the design of new boiler, is readily applicable to
Put into operation the transformation of boiler.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of outer cover 1 in the present invention；
Fig. 2 is the top view of outer cover 1；
Fig. 3 is the sectional view in Fig. 1 at A-A；
Fig. 4 is the structural schematic diagram of core pipe 4；
Fig. 5 is the sectional view in Fig. 4 at B-B；
Fig. 6 is the installation diagram of limited post 5 in the present invention；
Fig. 7 is structural schematic diagram of the invention；
Fig. 8 is location diagram when multiple blast caps work.
Wherein, 1 it is outer cover, 2 be location hole, 3 be deflector hole, 4 be core pipe, 5 be limited post, 6 be throttle orifice, 7 is positioning
Groove, 8 are spacer pin.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Referring to figs. 1 to Fig. 8, the Wind cap for boiler of the present invention for strengthening Flow of Goods and Materials includes outer cover 1 and core pipe 4, wherein
The top of core pipe 4 is provided with limited post 5, and the top of outer cover 1 offers location hole 2, and core pipe 4 is socketed in outer cover 1, limited post 5
It is inserted in location hole 2, and forms toroidal cavity between core pipe 4 and outer cover 1, the side of outer cover 1 is circumferentially arranged several lead
Discharge orifice 3, wherein the central axis of each deflector hole 3 deflects in same direction, and several throttle orifices 6, object are provided on the side wall of core pipe 4
Material successively flows out after core pipe 4, throttle orifice 6 and toroidal cavity from deflector hole 3.
It is provided with positioning groove 7 on the inner wall of location hole 2, spacer pin 8 is provided on the side wall of limited post 5, spacer pin 8 is inserted
Enter in the positioning groove 7；The central axis of deflector hole 3 tangentially deflects 1 °~60 °；The aperture wind speed of deflector hole 3 is 20m/s
~60m/s.
Outer cover 1 and core pipe 4 by self weight mode in conjunction with, the mounting height and angle of blast cap are matched by location hole 2 and limited post 5
It closes and determines.The central axis of deflector hole 3 tangentially deflects 20 °, and adjacent several blast caps, which are mutually used as, to form whirlpool in region therebetween
Stream accelerates the flowing of boiler large granular materials, avoids that material deposits and blast cap is to blowing.The aperture of location hole 2 is 20mm, location hole
2 with the outer diameter tight fit of limited post 5, made by spacer pin 8 and 7 tight fit of positioning groove with the setting angle of stationary housings 1
Outer cover 1 is obtained not rotate in the process of running.A whole set of blast cap uses casting technique, and material selection antifriction alloy is to guarantee its height
Warm antiwear characteristic.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (6)
1. a kind of Wind cap for boiler for strengthening Flow of Goods and Materials, which is characterized in that including outer cover (1) and core pipe (4), wherein core pipe (4)
Top be provided with limited post (5), offered at the top of outer cover (1) location hole (2), core pipe (4) is socketed in outer cover (1), limit
Position column (5) is inserted in location hole (2), and toroidal cavity is formed between core pipe (4) and outer cover (1), and the side of outer cover (1) is along week
To being provided with several deflector holes (3), wherein the central axis of each deflector hole (3) deflects in same direction, on the side wall of core pipe (4)
It is provided with several throttle orifices (6), material successively flows out after core pipe (4), throttle orifice (6) and toroidal cavity from deflector hole (3).
2. the Wind cap for boiler according to claim 1 for strengthening Flow of Goods and Materials, which is characterized in that on the inner wall of location hole (2)
It is provided with positioning groove (7), is provided on the side wall of limited post (5) spacer pin (8), it is recessed that spacer pin (8) is inserted in the positioning
In slot (7).
3. the Wind cap for boiler according to claim 1 for strengthening Flow of Goods and Materials, which is characterized in that the aperture of location hole (2) is
20mm。
4. the Wind cap for boiler according to claim 1 for strengthening Flow of Goods and Materials, which is characterized in that the central axis of deflector hole (3)
Tangentially deflect 1 °~60 °.
5. the Wind cap for boiler according to claim 4 for strengthening Flow of Goods and Materials, which is characterized in that the central axis of deflector hole (3)
Tangentially deflect 20 °.
6. the Wind cap for boiler according to claim 1 for strengthening Flow of Goods and Materials, which is characterized in that the aperture wind of deflector hole (3)
Speed is 20m/s~60m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469585.6A CN109489032A (en) | 2018-11-28 | 2018-11-28 | A kind of Wind cap for boiler for strengthening Flow of Goods and Materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469585.6A CN109489032A (en) | 2018-11-28 | 2018-11-28 | A kind of Wind cap for boiler for strengthening Flow of Goods and Materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109489032A true CN109489032A (en) | 2019-03-19 |
Family
ID=65699159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811469585.6A Pending CN109489032A (en) | 2018-11-28 | 2018-11-28 | A kind of Wind cap for boiler for strengthening Flow of Goods and Materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109489032A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563629A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院工程热物理研究所 | Spiral-flow type built-in cylindrical blast cap |
| CN203177163U (en) * | 2013-04-09 | 2013-09-04 | 武汉凯迪工程技术研究总院有限公司 | Outer hexagonal air cap of circulating fluidized bed boiler |
| CN203549807U (en) * | 2013-09-27 | 2014-04-16 | 长沙科汇节能技术有限公司 | Cylindrical type cowl with steps for circulating fluidized bed boiler |
| KR20170042249A (en) * | 2015-10-08 | 2017-04-18 | 아멕 포스터 휠러 에너지아 오와이 | Method of introducing primary fluidizing gas into a furnace of a fluidized bed boiler |
| CN207065555U (en) * | 2017-07-20 | 2018-03-02 | 中国华能集团清洁能源技术研究院有限公司 | A kind of modified fluidized-bed combustion boiler air cap device |
| CN209213833U (en) * | 2018-11-28 | 2019-08-06 | 中国华能集团清洁能源技术研究院有限公司 | A kind of Wind cap for boiler for strengthening Flow of Goods and Materials |
-
2018
- 2018-11-28 CN CN201811469585.6A patent/CN109489032A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563629A (en) * | 2010-12-15 | 2012-07-11 | 中国科学院工程热物理研究所 | Spiral-flow type built-in cylindrical blast cap |
| CN203177163U (en) * | 2013-04-09 | 2013-09-04 | 武汉凯迪工程技术研究总院有限公司 | Outer hexagonal air cap of circulating fluidized bed boiler |
| CN203549807U (en) * | 2013-09-27 | 2014-04-16 | 长沙科汇节能技术有限公司 | Cylindrical type cowl with steps for circulating fluidized bed boiler |
| KR20170042249A (en) * | 2015-10-08 | 2017-04-18 | 아멕 포스터 휠러 에너지아 오와이 | Method of introducing primary fluidizing gas into a furnace of a fluidized bed boiler |
| CN207065555U (en) * | 2017-07-20 | 2018-03-02 | 中国华能集团清洁能源技术研究院有限公司 | A kind of modified fluidized-bed combustion boiler air cap device |
| CN209213833U (en) * | 2018-11-28 | 2019-08-06 | 中国华能集团清洁能源技术研究院有限公司 | A kind of Wind cap for boiler for strengthening Flow of Goods and Materials |
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