CN204478036U - The anti-blocking conveying device of coal channel under boiler - Google Patents
The anti-blocking conveying device of coal channel under boiler Download PDFInfo
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- CN204478036U CN204478036U CN201420809519.XU CN201420809519U CN204478036U CN 204478036 U CN204478036 U CN 204478036U CN 201420809519 U CN201420809519 U CN 201420809519U CN 204478036 U CN204478036 U CN 204478036U
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- coal
- unloading tube
- tube
- intraformational bed
- coal unloading
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Abstract
The utility model relates to the anti-blocking conveying device of coal channel under a kind of boiler.It comprises in the vertical coal spout arranged, has the coal unloading tube in being in tilted layout below coal spout, and coal spout lower end is connected with the upside of the contiguous upper end of coal unloading tube, and coal spout is communicated with coal unloading tube.There is the airduct for being dispelled by the fine coal entered in coal unloading tube coal unloading tube upper end, and described airduct upper end is connected with boiler fan structure in the mounted state, and airduct lower end is stretched in coal unloading tube.Coal unloading tube lower end is connected with coal breakage mouthpiece.The downside tube wall being characterized in contiguous coal unloading tube upper end there is the first air outlet, inside the tube wall corresponding to the first air outlet, one section has intraformational bed, the top of this intraformational bed and longitudinal both sides all link together with the medial surface of coal unloading tube, and have the first spacing for blowing between intraformational bed and coal unloading tube medial surface.Adopt the utility model, conglomeration chute blockage fault can be avoided, guarantee the oepration at full load of boiler energy, improve the operational efficiency of boiler.Be applicable on CFBB.
Description
Technical field
The utility model relates to a kind of boiler coal feeding passage.Specifically, the conveying device with anti-blockage function coal dust being sent into boiler combustion indoor is used to.Be particularly useful in the coal supply lower channel of CFBB.
Background technology
At present, all know in boiler manfacturing industry, the lower coal channel conveying device that CFBB is equipped with mainly comprises in the vertical coal spout arranged, the coal unloading tube in being in tilted layout is provided with below coal spout, coal spout lower end is connected with the upside of the contiguous upper end of coal unloading tube, and coal spout is communicated with coal unloading tube.There is the airduct for being dispelled by the fine coal entered in coal unloading tube coal unloading tube upper end, and described in installment state, airduct upper end is connected with the wind pushing mechanism of boiler, and airduct lower end is stretched in coal unloading tube.Coal unloading tube lower end is connected with coal breakage mouthpiece.During boiler operatiopn, first coal dust enters from coal spout upper end and drops on the coal spout corner crossing with coal unloading tube, relends the lower end helping airduct and air-introduced machine coal dust to be blowed to coal unloading tube, finally by coal breakage mouthpiece, enters in the combustion chamber of boiler.Due to the moisture containing more than 10% in coal dust, drop to coal unloading tube when coal dust from coal spout upper end and be transported to the process of coal breakage mouthpiece, very easily there is clustering phenomena, make, in the coal spout corner crossing with coal unloading tube and coal breakage mouthpiece, usually to occur conglomeration chute blockage fault.Once there is chute blockage fault, the lighter needs boiler to reduce load operation, time serious, needs blowing out to carry out unimpeded.Therefore, adopt the CFBB of above-mentioned lower coal channel conveying device, cannot realize oepration at full load, operational efficiency is low.
Utility model content
Problem to be solved in the utility model is to provide the anti-blocking conveying device of coal channel under a kind of boiler.Adopt this device, conglomeration chute blockage fault can be avoided, guarantee the oepration at full load of boiler energy, improve the operational efficiency of boiler.
The problems referred to above to be solved in the utility model, are realized by following technical scheme:
Under boiler of the present utility model, the anti-blocking conveying device of coal channel comprises in the vertical coal spout arranged, has the coal unloading tube in being in tilted layout below coal spout, and coal spout lower end is connected with the upside of the contiguous upper end of coal unloading tube, and coal spout is communicated with coal unloading tube.There is the airduct for being dispelled by the fine coal entered in coal unloading tube coal unloading tube upper end, and described airduct upper end is connected with boiler fan structure in the mounted state, and airduct lower end is stretched in coal unloading tube.Coal unloading tube lower end is connected with coal breakage mouthpiece.The downside tube wall being characterized in contiguous coal unloading tube upper end there is the first air outlet, inside the tube wall corresponding to the first air outlet, one section has intraformational bed, the top of this intraformational bed and longitudinal both sides all link together with the medial surface of coal unloading tube, and have the first spacing for blowing between intraformational bed and coal unloading tube medial surface.
Wherein, The cross section of described intraformational bed is arc.All there is the first outer flanging parallel with diameter line on longitudinal both sides of described intraformational bed, there is the second outer flanging vertical with diameter line contiguous coal unloading tube one end of described intraformational bed, and the top of described intraformational bed and longitudinal both sides link together by the medial surface of the second outer flanging and the first outer flanging and coal unloading tube respectively.The downward extension line that the center of described intraformational bed lower end is corresponding to coal spout lower end is corresponding.
Angle between the longitudinal both sides of described intraformational bed is less than 180 degree.
Further improvement of the utility model scheme is, the outside sandwich of its overall length through is had outside the downside tube wall of described coal breakage mouthpiece, the upper end of described outside sandwich and longitudinal both sides all link together with the lateral surface of coal breakage mouthpiece, and have the second spacing for blowing between outside sandwich and coal breakage mouthpiece lateral surface; The upper end of outside sandwich have be communicated with described second spacing for coal dust being sowed the second air outlet come.
Wherein: the cross section of described outside sandwich is arc.All there is the three outer flanging parallel with diameter line on longitudinal both sides of described outside sandwich, there is the vertical with diameter line flanging all round contiguous coal unloading tube one end of described outside sandwich, and the top of described intraformational bed and longitudinal both sides link together by the lateral surface of the flanging and the 3rd outer flanging and coal unloading tube all round respectively.
Take such scheme, have the following advantages:
As can be seen from the above scheme, owing to being provided with the first air outlet on the downside tube wall of contiguous coal unloading tube upper end, inside the tube wall corresponding to the first air outlet, one section is provided with intraformational bed, together with the top of this intraformational bed is all connected in the medial surface of coal unloading tube with longitudinal both sides, and between intraformational bed and coal unloading tube medial surface, there is the first spacing for blowing.In boiler running process, send in coal spout by feeder, fall the corner that coal spout lower end connects with coal unloading tube, by the air channel that the intraformational bed on inside the tube wall corresponding to the first air outlet by the first air outlet one section, the first spacing between intraformational bed and coal unloading tube medial surface are formed, wind in air channel can blow to burner hearth direction along coal unloading tube, and forming a cross section in the downside of coal unloading tube inner surface is the air cushion of arc.Fall the coal dust on this air cushion under the effect of air cushion, can move towards the direction, combustion chamber of boiler, thus stopped coal dust in corner conglomeration blocking, ensure that the oepration at full load of boiler, improve the operational efficiency of boiler.
Again owing to there being the outside sandwich of through coal breakage mouthpiece overall length outside the downside tube wall of described coal breakage mouthpiece, the upper end of described outside sandwich and longitudinal both sides all link together with the lateral surface of coal breakage mouthpiece, and have the second spacing for blowing between outside sandwich and coal breakage mouthpiece lateral surface.The upper end of outside sandwich have be communicated with described second spacing for coal dust being sowed the second air outlet come.Thus, define another stock wind in the bottom of coal breakage mouthpiece.When coal dust enters in coal breakage mouthpiece, by this strand of wind, coal dust is sowed in the combustion chamber of boiler.Stop the conglomeration chute blockage phenomenon of coal dust in coal breakage mouthpiece, thus further ensure that the oepration at full load of boiler, improve the operational efficiency of boiler.
Accompanying drawing explanation
Fig. 1 is the anti-blocking transport conveyor constructions schematic diagram of coal channel under boiler of the present utility model;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is the B-B cross-sectional schematic of Fig. 1.
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, under boiler of the present utility model, the anti-blocking conveying device of coal channel comprises in the vertical coal spout 4 arranged, the coal unloading tube 7 in being in tilted layout is provided with below coal spout 4, coal spout 4 lower end is connected with the upper side wall of the contiguous upper end of coal unloading tube 7, and coal spout 4 is communicated with coal unloading tube 7.Coal unloading tube 7 upper end is provided with the airduct 3 for being dispelled by the fine coal entered in coal unloading tube 7, and under installment state, described airduct 3 upper end is connected with the wind pushing mechanism of boiler by pipeline, and airduct 3 lower end is stretched in coal unloading tube 7.Coal unloading tube 7 lower end is connected with coal breakage mouthpiece 8.The downside tube wall of contiguous coal unloading tube 7 upper end is processed with the first air outlet 1, inside the tube wall corresponding to the first air outlet 1, one section is provided with intraformational bed 6, the top of this intraformational bed 6 and longitudinal both sides all weld together with the medial surface of coal unloading tube 7, and leave the first spacing 5 for blowing between intraformational bed 6 and coal unloading tube 7 medial surface.
The cross section of described intraformational bed 6 is arc.All there is the first outer flanging 13 vertical with diameter line on longitudinal both sides of intraformational bed 6, there is the second outer flanging 2 parallel with diameter line contiguous coal unloading tube 7 one end of described intraformational bed 6, and the top of described intraformational bed 6 and longitudinal both sides link together with the medial surface of coal unloading tube 7 by the second outer flanging 2 and the first outer flanging 13 respectively.
The downward extension line that the center of described intraformational bed 6 lower end is corresponding to coal spout 7 lower end is corresponding.
Angle between the described longitudinal both sides of intraformational bed 6 is less than 180 degree.
By the air channel that the intraformational bed 6 on inside the tube wall corresponding to the first air outlet 1 by the first air outlet 1 one section, the first spacing 5 between intraformational bed 6 and coal unloading tube 7 medial surface are formed, wind in air channel can blow to burner hearth direction along coal unloading tube 7, and forming a cross section in the downside of coal unloading tube 7 inner surface is the air cushion of arc.Fall the coal dust on this air cushion under the effect of air cushion, can move towards the direction, combustion chamber 9 of boiler, thus stopped coal dust in corner conglomeration blocking, ensure that the oepration at full load of boiler, improve the operational efficiency of boiler.
The outside sandwich 10 of its overall length through is had in the downside tube wall arranged outside of described coal breakage mouthpiece 8, the upper end of described outside sandwich 10 and longitudinal both sides all weld together with the lateral surface of coal breakage mouthpiece 8, and leave the second spacing 15 for blowing between outside sandwich 10 and coal breakage mouthpiece 8 lateral surface.The upper end of outside sandwich 10 leave be communicated with described second spacing 15 for coal dust being sowed the second air outlet 12 come.
The cross section of outside sandwich 10 is wherein arc.
Longitudinal both sides of described outside sandwich 10 are all processed with the three outer flanging 14 parallel with diameter line, contiguous coal unloading tube 7 one end of described outside sandwich 10 is processed with the vertical with diameter line the flanging 11 all round, and flanging 11 and the 3rd outer flanging 14 weld together with the lateral surface of coal unloading tube 7 all round by the respectively for the top of described intraformational bed 6 and longitudinal both sides.
By the air channel that the second air outlet 12 be communicated with the second spacing 15 by the upper end of outside sandwich 10, the second spacing 15 between outside sandwich 10 with coal breakage mouthpiece 8 lateral surface, outside sandwich 10 is formed, define another stock wind in the bottom of coal breakage mouthpiece 8.When coal dust enters in coal breakage mouthpiece 8, by this strand of wind, coal dust is sowed in the combustion chamber 9 of boiler, stopped the conglomeration chute blockage phenomenon of coal dust in coal breakage mouthpiece 8, further ensure that the oepration at full load of boiler, improve the operational efficiency of boiler.
Claims (8)
1. the anti-blocking conveying device of coal channel under boiler, comprise in the vertical coal spout (4) arranged, coal spout (4) below has in the coal unloading tube be in tilted layout (7), and coal spout (4) lower end is connected with the upside of the contiguous upper end of coal unloading tube (7), and coal spout (4) is communicated with coal unloading tube (7); There is the airduct (3) for being dispelled by the fine coal entered in coal unloading tube (7) coal unloading tube (7) upper end, and described airduct (3) upper end is connected with boiler fan structure in the mounted state, and airduct (3) lower end is stretched in coal unloading tube (7); Coal unloading tube (7) lower end is connected with coal breakage mouthpiece (8); The downside tube wall that it is characterized in that contiguous coal unloading tube (7) upper end there is the first air outlet (1), with inside the corresponding tube wall of the first air outlet (1) one section have intraformational bed (6), the top of this intraformational bed and longitudinal both sides all link together with the medial surface of coal unloading tube (7), and have the first spacing (5) for blowing between intraformational bed (6) and coal unloading tube (7) medial surface.
2. the anti-blocking conveying device of coal channel under boiler according to claim 1, is characterized in that the cross section of described intraformational bed (6) is arc.
3. the anti-blocking conveying device of coal channel under boiler according to claim 1, it is characterized in that all there is the first outer flanging (13) parallel with diameter line on longitudinal both sides of described intraformational bed (6), there is the second outer flanging (2) vertical with diameter line contiguous coal unloading tube (7) one end of described intraformational bed (6), and the top of described intraformational bed (6) and longitudinal both sides link together with the medial surface of coal unloading tube (7) by the second outer flanging (2) and the first outer flanging (13) respectively.
4. the anti-blocking conveying device of coal channel under boiler according to claim 1, is characterized in that the corresponding downward extension line in the center of described intraformational bed (6) lower end and coal spout (7) lower end is corresponding.
5. the anti-blocking conveying device of coal channel under the boiler according to any one of claim 1 ~ 4, is characterized in that the angle between described intraformational bed (6) longitudinal both sides is less than 180 degree.
6. the anti-blocking conveying device of coal channel under boiler according to claim 1, the outside sandwich (10) of its overall length through is had outside the downside tube wall that it is characterized in that described coal breakage mouthpiece (8), the upper end of described outside sandwich (10) and longitudinal both sides all link together with the lateral surface of coal breakage mouthpiece (8), and have the second spacing (15) for blowing between outside sandwich (10) and coal breakage mouthpiece (8) lateral surface; The upper end of outside sandwich (10) have be communicated with described second spacing (15) for coal dust being sowed the second air outlet (12) come.
7. the anti-blocking conveying device of coal channel under boiler according to claim 6, is characterized in that the cross section of described outside sandwich (10) is arc.
8. the anti-blocking conveying device of coal channel under boiler according to claim 6, it is characterized in that all there is the three outer flanging (14) parallel with diameter line on longitudinal both sides of described outside sandwich (10), there is the vertical with diameter line the flanging (11) all round contiguous coal unloading tube (7) one end of described outside sandwich (10), and flanging (11) and the 3rd outer flanging (14) link together with the lateral surface of coal unloading tube (7) all round by the respectively for the top of described intraformational bed (6) and longitudinal both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420809519.XU CN204478036U (en) | 2014-12-20 | 2014-12-20 | The anti-blocking conveying device of coal channel under boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420809519.XU CN204478036U (en) | 2014-12-20 | 2014-12-20 | The anti-blocking conveying device of coal channel under boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204478036U true CN204478036U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420809519.XU Expired - Fee Related CN204478036U (en) | 2014-12-20 | 2014-12-20 | The anti-blocking conveying device of coal channel under boiler |
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| CN (1) | CN204478036U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140429A (en) * | 2018-09-07 | 2019-01-04 | 山东禹王生态食业有限公司 | A kind of sawdust fluidized-bed combustion boiler combustion system |
-
2014
- 2014-12-20 CN CN201420809519.XU patent/CN204478036U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140429A (en) * | 2018-09-07 | 2019-01-04 | 山东禹王生态食业有限公司 | A kind of sawdust fluidized-bed combustion boiler combustion system |
| CN109140429B (en) * | 2018-09-07 | 2020-03-17 | 山东禹王生态食业有限公司 | Wood chip fluidized bed boiler combustion system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150715 Termination date: 20211220 |