CN207667803U - A kind of device for improving separator for coal mill outlet pulverized coal fineness - Google Patents
A kind of device for improving separator for coal mill outlet pulverized coal fineness Download PDFInfo
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- CN207667803U CN207667803U CN201721628196.4U CN201721628196U CN207667803U CN 207667803 U CN207667803 U CN 207667803U CN 201721628196 U CN201721628196 U CN 201721628196U CN 207667803 U CN207667803 U CN 207667803U
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- Prior art keywords
- separator
- coal
- improving
- fineness
- pulverized coal
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Abstract
The utility model discloses a kind of devices exporting pulverized coal fineness for improving separator for coal mill, and coal dust even results are good, simple in structure, are easily installed, and have good application development prospect.It includes separator static vane, separator reinforcing ring.The static vane generates local turbulent, reinforces the mixing of different zones coal dust, the coal powder density into separator is made to tend to be uniform for being disturbed to the band powder air-flow of separator import；The static vane detaches for realizing the collision of coal dust, and after the coal dust in air-flow strikes blade, thicker coal dust can be detached from from air-flow, be fallen into the coal pulverizer of lower part.
Description
Technical field
It is a kind of for improving separator for coal mill outlet pulverized coal fineness the utility model is related to thermal power industry
Device.
Background technology
For separator for screening the coal dust of coal pulverizer milled, the coal dust for meeting combustion requirements passes through separator outlet
Tube cell is sent into burner hearth, incongruent to re-grind.Separator outlet is equipped with four tube cells, and the uniformity of coal dust directly affects
Combustion case in entire burner hearth.When coal dust is uneven, situations such as in-furnace temperature deviation is big, and unburned carbon in flue dust is high will occur, it can
It can cause water wall high temperature corrosion, the problems such as superheater over temperature, jeopardize the safe operation of unit.
Invention content
For problems of the prior art, the utility model provides a kind of for improving separator for coal mill outlet coal
The device of powder uniformity, it is simple in structure, have replicability.
The utility model is to be achieved through the following technical solutions：
A kind of device for improving separator for coal mill outlet pulverized coal fineness, including multiple separator inlet static state leaves
Piece, the separator inlet static vane are annularly arranged, and one end of all separator inlet static vanes is fixed on inner ring,
The other end of all separator inlet static vanes is fixed on outer ring.
In use, the separator inlet static vane is installed between separator inner cone and Outer Taper, inner ring with it is interior
Cone is fixed, and outer ring is fixed with Outer Taper.
Preferably, the number of the separator inlet static vane is 20~40, and thickness is 5~10mm, and width is
40cm~80cm.
Preferably, the angle that the separator inlet static vane favours horizontal plane is 30 °~60 °.
It is furthermore preferred that the material of the separator inlet static vane is 16Mn.
It is furthermore preferred that being provided with reinforcing ring jointly in all separator inlet static vanes.
In addition, the device for improving separator for coal mill outlet pulverized coal fineness further include multiple decoupler shafts to
Baffle, the separator axial baffle is between inner cone and Outer Taper and can rotate.
The separator axial baffle is between inner cone and Outer Taper and rotatable implementation method is：Inside
Rotary shaft is connected between cone and Outer Taper, separator axial baffle is driven by rotary shaft to be rotated.
In addition, the utility model also protects a kind of separator for coal mill, which includes above-mentioned for improving coal pulverizer
The device of dust separator outlet coal fine uniformity.
The utility model has the beneficial effects that：
The static vane of the utility model can disturb the band powder air-flow of separator import, generate local turbulent,
The mixing for reinforcing different zones coal dust makes the coal powder density into separator tend to be uniform；Axial baffle is for realizing coal simultaneously
The collision of powder detaches, and after the coal dust in air-flow strikes axial baffle, thicker coal dust can be detached from from air-flow, falls into lower part mill
In coal machine.
Description of the drawings
Fig. 1 is the in-site installation position view of device described in the utility model；
Fig. 2 is the utility model static vane partial schematic diagram；
Arrow direction is band powder air motion direction in figure.
Fig. 3 is the utility model static vane and the schematic top plan view of reinforcing ring.
In figure：1 separator inlet static vane, 2 inner rings, 3 outer rings, 4 inner cones, 5 Outer Tapers, 6 reinforcing rings, 7 separators
Axial baffle.
Specific implementation mode
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than limit.
Embodiment 1：
As shown in Figure 1, 2, 3, the utility model provides a kind of for improving separator for coal mill outlet pulverized coal fineness
Device, apparatus main body structure include separator inlet static vane 1 and separator axial baffle 7, and separator static vane 1 is welded
Between separator inner cone 4 and Outer Taper 5, separator reinforcing ring 6 is welded on the circle of separator inlet static vane 1 one, point
It is rotated between separator inner cone 4 and Outer Taper 5 by rotary shaft from device axial baffle 7, rotary shaft is welded on by axle sleeve
On inner cone 4 and Outer Taper 5, and separator axial baffle 7 enters along airflow direction positioned at separator far from separator inlet
1 top of mouth static vane.Existing separator for coal mill structure is changed by separator inlet static vane 1, and to whole
Body layout change is little, and utility model device is simple in structure, and coal dust even results are good, simple in structure, are easily installed, and has very
Good application development prospect.
In specific implementation process, the setting angle of separator inlet static vane 1 is according to the operation feelings of power plant's pulverized coal preparation system
Condition is designed：When coal pulverizer exports fineness of pulverized coal bigger than normal or lack of homogeneity, 1 setting angle of separator inlet static vane is chosen
30~45 °；When coal pulverizer outlet fineness of pulverized coal, uniformity are preferable, 1 setting angle of separator inlet static vane selection 45~
60°.If part band powder air velocity is larger, reinforcing ring 6 can be added, improves 1 rigidity of separator inlet static vane.
In the utility model, static vane material is 16Mn, is connect with separator inner cone and Outer Taper by welding, resistance to
Wear resistance is strong, strong shock resistance.It can also be welded with the reinforcing ring of fixed blade as needed, material 16Mn is conducive to
Enhance the integral rigidity of blade.
The operation principle of the utility model is as follows：
When the band powder air-flow of coal pulverizer outlet enters separator, the separator inlet static vane 1 is used for separation
The band powder air-flow of device import is disturbed, and local turbulent is generated, and reinforces the mixing of different zones coal dust, makes the coal into separator
Powder concentration tends to be uniform, when through separator axial baffle 7, the larger heavier particles collision of grain size on separator axial baffle 7,
Air-flow can be detached to fall back in coal pulverizer to regrind, separation is realized, finally the coal dust for meeting combustion requirements is sent in burner hearth.Together
When separator inlet static vane 1 detached for realizing the collision of coal dust, after the coal dust in air-flow strikes blade, thicker coal
Powder can be detached from from air-flow, be fallen into the coal pulverizer of lower part.
Claims (9)
1. a kind of device for improving separator for coal mill outlet pulverized coal fineness, it is characterised in that：Including multiple separators
Entrance static vane (1), the separator inlet static vane (1) are annularly arranged, all separator inlet static vanes (1)
One end be fixed on inner ring (2), the other end of all separator inlet static vanes (1) is fixed on outer ring (3).
2. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is described
Separator inlet static vane (1) is installed between separator inner cone (4) and Outer Taper (5), inner ring (2) and inner cone (4)
Fixed, outer ring (3) are fixed with Outer Taper (5).
3. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is described
The number of separator inlet static vane (1) is 20~40, and thickness is 5~10mm, and width is 40cm~80cm.
4. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is described
The angle that separator inlet static vane (1) favours horizontal plane is 30 °~60 °.
5. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is described
The material of separator inlet static vane (1) is 16Mn.
6. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is all
It is provided with reinforcing ring (6) jointly on the separator inlet static vane (1).
7. the device for improving separator for coal mill outlet pulverized coal fineness as described in claim 1, it is characterised in that：It is described
The device that pulverized coal fineness is exported for improving separator for coal mill further includes multiple separator axial baffles (7), decoupler shaft
To baffle (7) far from separator inlet, the separator axial baffle (7) be located between inner cone (4) and Outer Taper (5) and
It can rotate.
8. the device for improving separator for coal mill outlet pulverized coal fineness as claimed in claim 7, it is characterised in that：It is described
Separator axial baffle (7) be located between inner cone (4) and Outer Taper (5) and can rotate including：In inner cone (4) and outside
Rotary shaft is connected between cone (5), separator axial baffle (7) is driven by rotary shaft to be rotated.
9. a kind of separator for coal mill, it is characterised in that：It is any described for improving separator for coal mill including claim 1-8
Export the device of pulverized coal fineness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721628196.4U CN207667803U (en) | 2017-11-29 | 2017-11-29 | A kind of device for improving separator for coal mill outlet pulverized coal fineness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721628196.4U CN207667803U (en) | 2017-11-29 | 2017-11-29 | A kind of device for improving separator for coal mill outlet pulverized coal fineness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207667803U true CN207667803U (en) | 2018-07-31 |
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ID=62966661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721628196.4U Active CN207667803U (en) | 2017-11-29 | 2017-11-29 | A kind of device for improving separator for coal mill outlet pulverized coal fineness |
Country Status (1)
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| CN (1) | CN207667803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610043A (en) * | 2020-04-24 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Method for evaluating separation effect of coarse powder separator during mixed coal grinding |
| CN112138848A (en) * | 2020-09-16 | 2020-12-29 | 华润电力湖北有限公司 | Axial separator of coal mill |
-
2017
- 2017-11-29 CN CN201721628196.4U patent/CN207667803U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610043A (en) * | 2020-04-24 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Method for evaluating separation effect of coarse powder separator during mixed coal grinding |
| CN112138848A (en) * | 2020-09-16 | 2020-12-29 | 华润电力湖北有限公司 | Axial separator of coal mill |
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