CN204084426U - The weary gas extraction system of novel medium-speed pulverizer - Google Patents
The weary gas extraction system of novel medium-speed pulverizer Download PDFInfo
- Publication number
- CN204084426U CN204084426U CN201420559249.1U CN201420559249U CN204084426U CN 204084426 U CN204084426 U CN 204084426U CN 201420559249 U CN201420559249 U CN 201420559249U CN 204084426 U CN204084426 U CN 204084426U
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- China
- Prior art keywords
- primary air
- air piping
- shrinkage cavity
- speed pulverizer
- weary gas
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- 238000000605 extraction Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000003245 coal Substances 0.000 abstract description 12
- 239000002817 coal dust Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- Disintegrating Or Milling (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The weary gas extraction system of a kind of novel medium-speed pulverizer, belongs to the weary gas extraction system of medium-speed pulverizer.Five uniform primary air piping are fixedly connected with medium-speed pulverizer discharge knockout drum, wherein a primary air piping is connected with sack cleaner, this sack cleaner is also connected with air-introduced machine, be connected with powder storehouse below this sack cleaner, four machine supplying powders are connected respectively below this powder storehouse, all the other four tops in five primary air piping are fixedly connected with full curve type respectively and regulate shrinkage cavity device, by pipeline, all the other four primary air piping are connected this machine supplying powder with this respectively, and these all the other four primary air piping are connected with burner hearth.Advantage is novel structure, and flexibility is high, and the extraction amount of weary gas can regulate; Distribute more accurate, in conjunction with coal powder density on-line equipment, the rotating speed of the machine supplying powder that can accurately control to reallocate, carries out the reallocation of coal dust to the tube cell of variable concentrations, and this is that conventional allocation technology is beyond one's reach effect.
Description
Technical field
The utility model belongs to the weary gas extraction system of medium-speed pulverizer.
Background technology
At present, the newly-built large-sized boiler of our province configures medium-speed pulverizer unit pulverized-coal system in a large number, supplies the coal dust needed for 4 or 5 burner combustion by a coal pulverizer.After operation, often because the coal powder distribation inequality of 4 or 5 burners of same coal pulverizer supply causes Boiler Furnace combustion abnormal, show as burner coking or scaling loss, furnace flame deflection seriously cause that boiler coke load down runs, furnace outlet NOx does not reach design level, flying dust and large slag combustible content high, have a strong impact on safety and the economical operation of boiler.
Summary of the invention
The utility model provides a kind of novel medium-speed pulverizer weary gas extraction system, to solve the problem that coal powder distribation inequality causes Boiler Furnace combustion exception.
The technical scheme that the utility model is taked is: five uniform primary air piping are fixedly connected with medium-speed pulverizer discharge knockout drum, wherein a primary air piping is connected with sack cleaner, this sack cleaner is also connected with air-introduced machine, be connected with powder storehouse below this sack cleaner, four machine supplying powders are connected respectively below this powder storehouse, all the other four tops in five primary air piping are fixedly connected with full curve type respectively and regulate shrinkage cavity device, by pipeline, all the other four primary air piping are connected this machine supplying powder with this respectively, and these all the other four primary air piping are connected with burner hearth.
The structure of full curve type adjustment shrinkage cavity device described in the utility model is: on primary air piping, install row regulate shrinkage cavity, these row regulate the mutual close contact of shrinkage cavity, the outer rim being positioned at the shrinkage cavity regulating block of airduct forms continuous print curve Y, and the equation of this curve Y is: y=0.085x
2.
Adjustment shrinkage cavity quantity described in the utility model is 12.
Adjustment shrinkage cavity structure described in the utility model is that adjusting screw(rod) is threaded with shrinkage cavity regulating block.
The utility model has the advantages that novel structure, the weary gas extraction system of medium-speed pulverizer adopts pulverized coal preparation system semi-open type mode.Extract part primary wind and powder mixture from separator outlet, and carry out cloth bag separation, the coal dust be separated is redistributed.This technology can eliminate coal pulverizer, separator to the impact of coal powder distribation, reaches the object of coal powder distribation.Original system resistance does not change, the cold conditions wind multi-angle adopted, comprehensive primary air piping speed leveling technology and hot dynamic overall process wind speed, powder amount adjustment technology, original system resistance does not change, and less on original system impact, flexibility is high, the extraction amount of weary gas can regulate, distribute more accurate, in conjunction with coal powder density on-line equipment, accurately can control the rotating speed of reallocation machine supplying powder, the tube cell of variable concentrations is carried out to the reallocation of coal dust, this is that conventional allocation technology is beyond one's reach effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that the utility model full curve type regulates shrinkage cavity device;
Fig. 3 is the A-A sectional view of Fig. 2.
Detailed description of the invention
Five uniform primary air piping 1 are fixedly connected with medium-speed pulverizer discharge knockout drum 2, wherein a primary air piping is connected with sack cleaner 3, this sack cleaner is also connected with air-introduced machine 4, be connected with powder storehouse 5 below this sack cleaner, four machine supplying powders 6 are connected respectively below this powder storehouse, all the other four tops in five primary air piping 1 are fixedly connected with full curve type respectively and regulate shrinkage cavity device 7, by pipeline, all the other four primary air piping are connected this machine supplying powder 6 with this respectively, and these all the other four primary air piping are connected with burner hearth 8.
The structure of full curve type adjustment shrinkage cavity device described in the utility model is: on primary air piping 1, install row regulate shrinkage cavity 701, these row regulate the mutual close contact of shrinkage cavity, the outer rim being positioned at the shrinkage cavity regulating block 70102 of airduct forms continuous print curve Y, and the equation of this curve Y is: y=0.085x
2.
Adjustment shrinkage cavity 701 quantity described in the utility model is 12.
Adjustment shrinkage cavity 701 structure described in the utility model is that adjusting screw(rod) 70101 is threaded with shrinkage cavity regulating block 70102.
Medium-speed pulverizer discharge knockout drum was evenly equipped with 4 primary air piping originally, transform uniform 5 primary air piping as, wherein four pipelines was provided with full curve type and regulated shrinkage cavity device, can adjust the size of weary tolerance; Wherein the wind powder of a primary air piping is after bag-type dust, and weary gas enters air by air-introduced machine, and the coal dust of separation is stored in small-size powder bin.Four small-sized machine supplying powders are installed under powder storehouse, supply 4 primary air piping coal dusts respectively, as required the coal dust separated is reallocated.
Claims (4)
1. the weary gas extraction system of novel medium-speed pulverizer, it is characterized in that: five uniform primary air piping are fixedly connected with medium-speed pulverizer discharge knockout drum, wherein a primary air piping is connected with sack cleaner, this sack cleaner is also connected with air-introduced machine, be connected with powder storehouse below this sack cleaner, four machine supplying powders are connected respectively below this powder storehouse, all the other four tops in five primary air piping are fixedly connected with full curve type respectively and regulate shrinkage cavity device, by pipeline, all the other four primary air piping are connected this machine supplying powder with this respectively, these all the other four primary air piping are connected with burner hearth.
2. the weary gas extraction system of novel medium-speed pulverizer according to claim 1, it is characterized in that: the structure of described full curve type adjustment shrinkage cavity device is: on primary air piping, install row regulate shrinkage cavity, these row regulate the mutual close contact of shrinkage cavity, the outer rim being positioned at the shrinkage cavity regulating block of airduct forms continuous print curve Y, and the equation of this curve Y is: y=0.085x
2.
3. the weary gas extraction system of novel medium-speed pulverizer according to claim 2, is characterized in that: described adjustment shrinkage cavity quantity is 12.
4. the weary gas extraction system of the novel medium-speed pulverizer according to Claims 2 or 3, is characterized in that: described adjustment shrinkage cavity structure is that adjusting screw(rod) is threaded with shrinkage cavity regulating block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559249.1U CN204084426U (en) | 2014-09-28 | 2014-09-28 | The weary gas extraction system of novel medium-speed pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559249.1U CN204084426U (en) | 2014-09-28 | 2014-09-28 | The weary gas extraction system of novel medium-speed pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204084426U true CN204084426U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559249.1U Active CN204084426U (en) | 2014-09-28 | 2014-09-28 | The weary gas extraction system of novel medium-speed pulverizer |
Country Status (1)
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| CN (1) | CN204084426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279575A (en) * | 2014-09-28 | 2015-01-14 | 吉林省电力科学研究院有限公司 | Novel medium-speed coal mill exhaust extraction system |
-
2014
- 2014-09-28 CN CN201420559249.1U patent/CN204084426U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279575A (en) * | 2014-09-28 | 2015-01-14 | 吉林省电力科学研究院有限公司 | Novel medium-speed coal mill exhaust extraction system |
| CN104279575B (en) * | 2014-09-28 | 2017-01-11 | 吉林省电力科学研究院有限公司 | Medium-speed coal mill exhaust extraction system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |