CN203833177U - Thermal power plant coaling blanking point balance dust suppression device - Google Patents
Thermal power plant coaling blanking point balance dust suppression device Download PDFInfo
- Publication number
- CN203833177U CN203833177U CN201420193366.0U CN201420193366U CN203833177U CN 203833177 U CN203833177 U CN 203833177U CN 201420193366 U CN201420193366 U CN 201420193366U CN 203833177 U CN203833177 U CN 203833177U
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- Prior art keywords
- coal
- pipe
- dust suppression
- power plant
- thermal power
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- Expired - Fee Related
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- 239000000428 dust Substances 0.000 title claims abstract description 49
- 230000001629 suppression Effects 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 claims abstract description 71
- 238000007599 discharging Methods 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 4
- 210000002683 foot Anatomy 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 abstract description 6
- 230000003116 impacting effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a thermal power plant coaling blanking point balance dust suppression device, which comprises a coal drop pipe, a guide chute, a balance dust suppression pipe, connecting flanges and counter flanges, wherein the guide chute is arranged on the upper portion of a belt conveyor, holes are respectively arranged on the guide chute and a non-impacting abrasive surface which is arranged on the top portion of the coal drop pipe, straight pipe segments are welded on the guide chute and the non-impacting abrasive surface, then the connecting flanges are welded on the straight pipe segments of the coal drop pipe, the lower end of the balance dust suppression pipe is welded on the straight pipe segments which are arranged on the guide chute, the counter flanges are arranged on the upper end of the balance dust suppression pipe, and the connecting flanges and the counter flanges are fastened and connected through bolt fasteners. The thermal power plant coaling blanking point balance dust suppression device has the advantages that the thermal power plant coaling blanking point balance dust suppression device reduces to produce dust in the coal drop pipe, and improves running work environment. Because the upper portion of the coal drop pipe generates negative pressure, a bottom outlet of the coal drop pipe form positive pressure, coal drop dust overflows in the coal drop pipe under the action of pressure difference, and the wind and coal dust carried by the wind in the guide chute return to a falling start position of coal flow through the balance dust suppression pipe under the pressure action by arranging the balance dust suppression pipe between the guide chute and the coal drop pipe, and form a pressure balance and closed-loop circulation mode.
Description
Technical field
The utility model belongs to coal auxiliary device technical field in thermal power plant, relates in particular to the balance dust-arrest device at coaling system discharging point place of a kind of thermal power plant.
Background technology
Coaling system is the lifeline of thermal powerplant, has comprised the complicated links such as fire coal is unloaded, transported, conveying, and the each link in above-mentioned transport process can produce a large amount of dust.Dust pollution is the broken environment that changes jobs not only, also makes insulation of electrical installation level decline, and brings potential safety hazard.Therefore must take dust suppression measure to the discharging point of coaling system transhipment.The thermal power plant of domestic current mostly adopts, in the deflector chute exit of discharging point, mechanical draft dedusting is set.But in the transfer point of coaling system, due to the high speed rotating of head of belt conveyor cylinder and the impact of higher drop, coal breakage speed after free-falling body is larger, in the time falling into deflector chute, carrying larger wind falls, make deflector chute interior wind speed in discharging point place higher, even if dust exhaustor dust shield is installed, because this place's wind speed is too fast and outlet blast is higher, cause the dust exhaustor cannot be by whole dust suction, cause the dust phenomenon that overflows, simultaneously because coal breakage inner air tube forms the trend flowing downward, make the pressure on coal spout top form negative pressure lower than barometric pressure, further cause the dust that coal breakage carries falling into after deflector chute and can rising seethe, dust is overflowed.In addition, because the dust seething makes dust generation very large, the filter bag of dust exhaustor, because work under bad environment is often stopped up, needs cleaning and regular maintenance, replacing in time, has strengthened cost and workman's working strength of operation.
Summary of the invention
The purpose of this utility model is to provide the barotropic state of a kind of destruction due to coal the is carrying deflector chute space that a large amount of wind falls to forming, reduces coal discharging point balance dust-arrest device in the thermal power plant that in coal breakage process, dust seethes.By being returned to coal stream under the effect of pressure, the wind at deflector chute place and the coal dust that carries thereof start the top that whereabouts place is coal spout, equilibrium of pressure and closed loop circulation style are formed, make coal spout, deflector chute, balance dust-arrest device form a closed-cycle system, reduce the discharge of dust, improve operation working environment.
The technical solution of the utility model is:
Coal discharging point balance dust-arrest device in a kind of thermal power plant, comprise deflector chute, balance dust suppression pipe, butt flange, the anti-flange on coal spout, belt feeder top, it is characterized in that, respectively in the non-impact wear face perforate at deflector chute and coal spout top, and weld straight length, then butt flange is welded on the straight length on coal spout, the lower end of balance dust suppression pipe is welded on the straight length on deflector chute, anti-flange is installed in its upper end, butt flange and anti-flange is fastenedly connected with bolt fastener.
In order to obtain better technique effect, also have hollow " people " font device and plug, at two foots of " people " font device, butt flange and anti-flange are installed respectively, plug is installed in the one end of converging of two legs, and " people " font device is arranged between the top of balance dust suppression pipe and the straight length of coal spout by butt flange and anti-flange; Straight up, the straight length welding on coal spout is vertical with the line of centers of coal spout for the straight length welding on deflector chute; The angle of two legs of " people " font device is 45 °; Balance dust suppression pipe is 15 ° with the angle of " people " font device.
The utility model has the advantage of that it can destroy the barotropic state that is carrying the deflector chute space that a large amount of wind falls to forming due to coal.Because coal breakage inner air tube moves downward under the drive of coal breakage, make coal spout top produce negative pressure, meanwhile, coal spout outlet at bottom forms malleation, under the effect of difference of pressure, make coal breakage dust overflow in coal spout, balance dust suppression pipe is installed at top by deflector chute and coal spout, can make the wind at deflector chute place and the coal dust that carries returns to coal stream by balance dust-arrest device and starts whereabouts place under the effect of pressure, has formed equilibrium of pressure and closed loop circulation style.Few or the relief area of coal breakage of the coal breakage of the non-impact wear face contact of coal spout, perforate thereon does not affect coal spout intensity and does not hinder the whereabouts of coal stream, and the coal dust simultaneously returning by balance dust-arrest device can come back in deflector chute.Balance dust-arrest device is connected and is convenient to demolition and maintenance with flange and bolt fastener.The wearing and tearing at position that effectively prevent from turning round of " people " font device are set, the angle of " people " font device is 45 ° simultaneously, the angle of balance dust suppression pipe vertical section and " people " font device is 15 ° and has ensured that the balance dust-arrest device that can not fall back of the swollen ash in coal spout hinders and wherein returns to the mobile of wind, has ensured to return the coal dust carrying in wind simultaneously and has fallen back smoothly in coal spout.End at " people " font device and balance dust suppression pipe vertical section all arranges plug, to improve the resistance to abrasion of balance dust-arrest device corner, once and plug is worn out can change in time, than being set, bend pipe changes easily.By the utility model device, reduce the generation of dust in coal spout, improve operation working environment.
Brief description of the drawings
Fig. 1 is coal discharging point balance dust-arrest device structural representation in a kind of thermal power plant of the utility model;
In figure: 1. butt flange; 2. balance dust suppression pipe; 3. plug; 4. coal spout; 5. deflector chute; 6. belt feeder; 7. anti-flange; 8. " people " font device; 9. bolt fastener.
Detailed description of the invention
Coal discharging point balance dust-arrest device in a kind of thermal power plant, comprises the deflector chute 5, balance dust suppression pipe 2, butt flange 1, anti-flange 7 on coal spout 4, belt feeder 6 tops, hollow " people " font device 8, plug 3.First, respectively on the deflector chute on belt feeder 6 discharging point tops 5 and the non-impact wear face of coal spout 4 on perforate, and weld straight length, again butt flange 1 is welded on the straight length on coal spout 3, the lower end of balance dust suppression pipe 2 is welded on the straight length on deflector chute 5, and anti-flange 7 is installed in balance dust suppression pipe 2 upper ends, then, the straight length being connected with deflector chute 5 perforates is installed straight up, the straight length that perforate on the non-impact wear face of coal spout 4 is connected is vertical with the line of centers of coal spout 4, concentrate and impact the corner that balance dust suppression pipe 2 is connected with straight length on coal spout 4 for the coal dust carrying in the wind that prevents from returning, causing corner that wearing and tearing easily occur breaks, in balance dust suppression pipe 2 corners, " people " font device 8 is installed, at 8 two foots of " people " font device, butt flange and anti-flange are installed respectively, flange by the anti-flange on balance dust suppression pipe 2 tops with " people " font device 8, and butt flange on anti-flange and the coal spout of " people " font device 8 is fastenedly connected with bolt fastener 9 respectively, so balance dust suppression pipe 2 with deflector chute 5, coal spout is communicated with.
As optimization, the angle of two legs of " people " font device 8 is 45 °, balance dust suppression pipe 2 is 15 ° with the angle of " people " font device 8, end at " people " font device 8 and balance dust suppression pipe 2 all arranges plug 3, to improve the resistance to abrasion of the utility model device corner, once and plug is worn out can change in time, change easily than bend pipe is set.
Claims (7)
1. coal discharging point balance dust-arrest device in a thermal power plant, comprise deflector chute, balance dust suppression pipe, butt flange, the anti-flange on coal spout, belt feeder top, it is characterized in that, respectively in the non-impact wear face perforate at deflector chute and coal spout top, and weld straight length, then butt flange is welded on the straight length on coal spout, the lower end of balance dust suppression pipe is welded on the straight length on deflector chute, anti-flange is installed in its upper end, butt flange and anti-flange is fastenedly connected with bolt fastener.
2. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 1, it is characterized in that, also have hollow " people " font device and plug, at two foots of " people " font device, butt flange and anti-flange are installed respectively, " people " font device is arranged between the top of balance dust suppression pipe and the straight length of coal spout by butt flange and anti-flange.
3. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 2, is characterized in that, plug is installed in one end of converging of described " people " font device two legs.
4. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 2, is characterized in that, the angle of two legs of described " people " font device is 45 °.
5. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 2, is characterized in that, balance dust suppression pipe is 15 ° with the angle of " people " font device.
6. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 1 or 2, is characterized in that, the straight length welding on described deflector chute straight up.
7. coal discharging point balance dust-arrest device in thermal power plant as claimed in claim 1 or 2, is characterized in that, the straight length welding on described coal spout is vertical with the line of centers of coal spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193366.0U CN203833177U (en) | 2014-04-21 | 2014-04-21 | Thermal power plant coaling blanking point balance dust suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193366.0U CN203833177U (en) | 2014-04-21 | 2014-04-21 | Thermal power plant coaling blanking point balance dust suppression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203833177U true CN203833177U (en) | 2014-09-17 |
Family
ID=51511048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193366.0U Expired - Fee Related CN203833177U (en) | 2014-04-21 | 2014-04-21 | Thermal power plant coaling blanking point balance dust suppression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203833177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773477A (en) * | 2015-03-26 | 2015-07-15 | 中国能源建设集团安徽省电力设计院有限公司 | Large-drop coal dropping pipe with air return function |
| CN104960879A (en) * | 2015-06-19 | 2015-10-07 | 李文玉 | Dust suppression device for coal crusher |
-
2014
- 2014-04-21 CN CN201420193366.0U patent/CN203833177U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773477A (en) * | 2015-03-26 | 2015-07-15 | 中国能源建设集团安徽省电力设计院有限公司 | Large-drop coal dropping pipe with air return function |
| CN104960879A (en) * | 2015-06-19 | 2015-10-07 | 李文玉 | Dust suppression device for coal crusher |
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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: 20140917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |