CN202909812U - Aerofoil dynamic wind ring for coal pulverizer - Google Patents
Aerofoil dynamic wind ring for coal pulverizer Download PDFInfo
- Publication number
- CN202909812U CN202909812U CN 201220553162 CN201220553162U CN202909812U CN 202909812 U CN202909812 U CN 202909812U CN 201220553162 CN201220553162 CN 201220553162 CN 201220553162 U CN201220553162 U CN 201220553162U CN 202909812 U CN202909812 U CN 202909812U
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- Prior art keywords
- coal pulverizer
- plate
- aerofoil profile
- aerofoil
- moving vane
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Abstract
The utility model relates to a coal pulverizer, in particular to an aerofoil dynamic wind ring for the coal pulverizer. The aerofoil dynamic wind ring for the coal pulverizer comprises a plurality of dynamic wind ring sectors; each dynamic wind ring sector comprises an adjustable hood; each adjustable hood is connected with an outer side plate through a fastener; an aerofoil plate is arranged on the inner side of each adjustable hood and is welded together with a fixing plate; an upper plane of each aerofoil plate is parallel to an upper plane of the fixing plate; a guiding plate is arranged between each aerofoil plate and the fixing plate; included angles between the guiding plate and two planes of the aerofoil plate are 45 degrees; and an included angle between each aerofoil plate and the guiding plate is 45 degrees. According to the aerofoil plate, the motion direction of hot air entering the coal pulverizer is changed into a vertically-upward direction and turbulent flow at a dynamic wind ring device can be effectively reduced; and vertical pressure difference of a milling bowl and increase of current of a coal pulverizer motor can be avoided while the quantity of stone coal of the coal pulverizer is reduced.
Description
Technical field
The utility model relates to a kind of coal pulverizer, is specifically related to the moving vane of a kind of coal pulverizer aerofoil profile, is applicable to the thermal power plant pulverized coal preparation system, belongs to machinery manufacturing technology field.
Background technology
Moving vane is also referred to as impeller, is one of vitals of Mill Systems, generally is installed on the inner mill of the coal pulverizer cup apparatus.When coal pulverizer normally moved, moving vane device can make the direction of motion of the hot-air that enters coal pulverizer be tending towards vertically upward, and can improve wind speed and the uniformity of hot-air.Less lighter pulverized coal particle is carried upwards by air-flow on mill bowl outer rim, and the heavier external foreign material that are difficult for grinding then fall in the coal pulverizer dreg discharging box by moving vane device, are discharged from subsequently coal pulverizer.The wind speed of moving vane device place hot-air is higher, and the foreign material (mainly being pebble coal) that fall in the coal pulverizer dreg discharging box are fewer.At present the Power Plant in China ature of coal worse and worse, raw coal the inside impurity content is higher, therefore causes coal pulverizer pebble coal amount on the high side.The increase of pebble coal amount not only affects the economy of whole pulverized coal preparation system, also to environment on every side.In order to reduce coal pulverizer pebble coal amount, traditional way is to reduce the flow area at moving vane device place by the quantity that increases restrictor ring, thereby improves the wind speed of moving vane device place hot-air.Although this method can reduce the discharging of a part of pebble coal, but the increase of restrictor ring quantity will cause the increase of hot-air running resistance, and produce turbulent at moving vane device place, affect the normal running orbit of hot-air, thereby cause the up and down pressure reduction increase of coal pulverizer mill bowl, the coal pulverizer motor current increases, and has not only reduced the milling performance of coal pulverizer, also the economy of whole pulverized coal preparation system is caused adverse effect.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art part, provide a kind of coal pulverizer aerofoil profile to move vane, be made of some moving vane segments, and described moving vane segment includes adjustable cover, and adjustable cover is connected with outer panel by securing member; There is the aerofoil profile plate described adjustable cover inboard, and aerofoil profile plate and fixed head weld together, and the upper plane parallel of the upper plane of aerofoil profile plate and fixed head; Between described aerofoil profile plate and the fixed head guide plate is arranged, guide plate and aerofoil profile plate two plane included angles are 45 °, this aerofoil profile plate and guide plate angle are 45 °, the aerofoil profile plate is not only so that enter the direction of motion of the hot-air of coal pulverizer and change into vertically upward, can also effectively reduce the turbulent flow at moving vane device place, when reducing coal pulverizer pebble coal amount, can not cause the up and down increase of pressure reduction and coal pulverizer motor current of mill bowl.
The utility model is realized with following technical scheme: a kind of coal pulverizer aerofoil profile is moved vane, is made of some moving vane segments, it is characterized in that: described moving vane segment includes adjustable cover, and adjustable cover is connected with outer panel by securing member; There is the aerofoil profile plate described adjustable cover inboard, and aerofoil profile plate and fixed head weld together, and the upper plane parallel of the upper plane of aerofoil profile plate and fixed head; Between described aerofoil profile plate and the fixed head guide plate is arranged, guide plate and aerofoil profile plate two plane included angles are 45 °, and guide plate is along the fixed head circumference uniform distribution.
Be evenly equipped with a plurality of mounting holes on the described adjustable cover.
Described adjustable cover, outer panel, fixed head are arc-shaped structure.
Describedly consist of the moving vane of the complete coal pulverizer aerofoil profile of a cover by some moving vane segments, and bowl be bolted together by securing member and coal pulverizer mill.
The utility model has the advantages that: moving vane comprises the aerofoil profile plate, this aerofoil profile plate and guide plate angle are 45 °, the aerofoil profile plate is not only so that enter the direction of motion of the hot-air of coal pulverizer and change into vertically upward, can also effectively reduce the turbulent flow at moving vane device place, when reducing coal pulverizer pebble coal amount, can not cause the up and down increase of pressure reduction and coal pulverizer motor current of mill bowl.Wherein guide plate effectively raises the mobile uniformity of moving vane device place hot-air along the fixed head circumference uniform distribution, thereby has improved the performance of whole pulverized coal preparation system.
Description of drawings
Below in conjunction with drawings and the specific embodiments the utility model is described in further detail:
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is moving vane segment structure schematic diagram;
Among the figure: 1, moving vane segment, 11, adjustable cover, 12, outer panel, 13, the aerofoil profile plate, 14, guide plate, 15, fixed head, 16, securing member, 17, mounting hole.
The specific embodiment
As shown in the figure: a kind of coal pulverizer aerofoil profile is moved vane, includes some moving vane segments 1 and consists of, and described moving vane segment 1 includes adjustable cover 11, and adjustable cover is connected with outer panel 12 by securing member; There is aerofoil profile plate 13 described adjustable cover inboard, and aerofoil profile plate and fixed head 15 weld together, and the upper plane parallel of the upper plane of aerofoil profile plate and fixed head; Between described aerofoil profile plate and the fixed head guide plate 14 is arranged, guide plate and aerofoil profile plate two plane included angles are 45 °, and guide plate is along the fixed head circumference uniform distribution.
Be evenly equipped with a plurality of mounting holes 17 on the described adjustable cover.
Described adjustable cover, outer panel, fixed head are arc-shaped structure.
Describedly consist of the moving vane of the complete coal pulverizer aerofoil profile of a cover by some moving vane segments 1, and be bolted together by securing member 16 and coal pulverizer mill bowl.
Coal pulverizer with the moving vane of aerofoil profile not only can effectively reduce the pebble coal amount when normal operation, improve pulverizer capacity, to mill bowl up and down pressure reduction, motor current also improve significantly, thereby so that the economic performance of the simultaneity factor that whole pulverized coal preparation system is improved in performance also improving.
Claims (4)
1. the moving vane of coal pulverizer aerofoil profile is made of some moving vane segments (1), and it is characterized in that: described moving vane segment includes adjustable cover (11), and adjustable cover is connected with outer panel (12) by securing member; There is aerofoil profile plate (13) described adjustable cover inboard, and aerofoil profile plate and fixed head (15) weld together, and the upper plane parallel of the upper plane of aerofoil profile plate and fixed head; Guide plate (14) is arranged between described aerofoil profile plate and the fixed head, and guide plate and aerofoil profile plate two plane included angles are 45 °, and guide plate is along the fixed head circumference uniform distribution.
2. the moving vane of coal pulverizer aerofoil profile according to claim 1 is characterized in that: be evenly equipped with a plurality of mounting holes (17) on the described adjustable cover.
3. coal pulverizer aerofoil profile according to claim 1 is moved vane, and it is characterized in that: described adjustable cover, outer panel, fixed head are arc-shaped structure.
4. the moving vane of coal pulverizer aerofoil profile according to claim 1, it is characterized in that: described some moving vane segments (1) consist of the moving vane of the complete coal pulverizer aerofoil profile of a cover, and bowl are bolted together by securing member (16) and coal pulverizer mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553162 CN202909812U (en) | 2012-10-26 | 2012-10-26 | Aerofoil dynamic wind ring for coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553162 CN202909812U (en) | 2012-10-26 | 2012-10-26 | Aerofoil dynamic wind ring for coal pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202909812U true CN202909812U (en) | 2013-05-01 |
Family
ID=48158157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553162 Expired - Fee Related CN202909812U (en) | 2012-10-26 | 2012-10-26 | Aerofoil dynamic wind ring for coal pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202909812U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418483A (en) * | 2013-08-29 | 2013-12-04 | 济钢集团有限公司 | Abrasion-resistant impeller device of medium speed coal mill |
| CN105642406A (en) * | 2015-12-30 | 2016-06-08 | 溧阳中材重型机器有限公司 | Wind guiding component used for vertical mill and wind guiding device |
| CN106423415A (en) * | 2016-07-22 | 2017-02-22 | 天津水泥工业设计研究院有限公司 | Wind ring structure of vertical roller mill |
-
2012
- 2012-10-26 CN CN 201220553162 patent/CN202909812U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418483A (en) * | 2013-08-29 | 2013-12-04 | 济钢集团有限公司 | Abrasion-resistant impeller device of medium speed coal mill |
| CN105642406A (en) * | 2015-12-30 | 2016-06-08 | 溧阳中材重型机器有限公司 | Wind guiding component used for vertical mill and wind guiding device |
| CN105642406B (en) * | 2015-12-30 | 2018-04-24 | 溧阳中材重型机器有限公司 | A kind of wind guiding component and air ducting for vertical mill |
| CN106423415A (en) * | 2016-07-22 | 2017-02-22 | 天津水泥工业设计研究院有限公司 | Wind ring structure of vertical roller mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |