CN204034851U - The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer - Google Patents
The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer Download PDFInfo
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- CN204034851U CN204034851U CN201420489960.4U CN201420489960U CN204034851U CN 204034851 U CN204034851 U CN 204034851U CN 201420489960 U CN201420489960 U CN 201420489960U CN 204034851 U CN204034851 U CN 204034851U
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- Prior art keywords
- separator
- coal
- retrieving pipe
- powder retrieving
- coal pulverizer
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Abstract
The utility model relates to separator for coal mill anti-blocking technology field, thermal power plant, specifically, relate to the device preventing powder retrieving pipe from blocking in a kind of separator of coal pulverizer, outside the powder retrieving pipe (11) of separator (13), install temperature monitor (3) and vibrator (1) additional; Turnover panel (12) is provided with in powder retrieving pipe (11); when there is blocking in the powder retrieving pipe (11) of coal pulverizer (20); temperature monitor (3) sends warning, and controller (2) starts vibrator (1) and regularly pulls turnover panel (12) to carry out activity, guarantees the unimpeded of powder retrieving pipe (11).
Description
Technical field
The utility model relates to separator for coal mill anti-blocking technology field, thermal power plant, the device preventing powder retrieving pipe from blocking in a kind of separator of coal pulverizer.
Background technology
In prior art, raw coal enters coal pulverizer by feeder coal supply and grinds, and the coal dust after grinding is carried by wind and enters separator, and rough coal powder is separated and returned coal pulverizer and continue grinding by separator, and qualified coal dust is sent into burner hearth by pulverized coal channel and burnt.The effect of coal pulverizer coal dust classifier is separate by coarse grain coal dust in coal pulverizer primary mixture out on the one hand, returns coal pulverizer reface for defective coal dust by powder retrieving pipe; Another aspect to regulate fineness of pulverized coal.In prior art, to return powder not smooth for coal pulverizer powder retrieving pipe, cause producing accumulated powder in separator for coal mill, separator for coal mill flowing resistance is not only caused to increase, easily cause rough coal powder " secondary droplets " in separator simultaneously, thus make fineness of pulverized coal occur unusual fluctuations, thus impact burning, severe patient causes the generation of boiler extinguishment accident.
Such as Authorization Notice No. is the Chinese utility model patent of CN201842407U, it discloses one.
Such as application number is the Chinese invention patent of 201210256641.4 again, it discloses a kind of flood dragon type Anti Plugging Bunker, it is configured with fixed bin, the arm of force, axial direction positioning device, rotation storehouse, lower fixed bin, broken arch gamble clearly device, gear ring, block clearing blade, upper radial positioning device, lower radial positioning device composition.The upper end of upper fixed bin is connected with run coal bin, the upper end of the arm of force is connected with upper fixed bin, the lower end of the arm of force is connected with lower fixed bin, the lower end of lower fixed bin is connected with feeder upper end flashboard, the upper end of rotating storehouse contacts with upper fixed bin, located by upper radial positioning device, the lower end of rotating storehouse contacts with lower fixed bin, located by lower radial positioning device, the outer wall rotating storehouse is connected with gear ring, axial direction positioning device is fixed on the arm of force, the two ends up and down of broken arch blockage-clearing device respectively with upper fixed bin, the inwall firm welding of lower fixed bin, block clearing blade is welded on broken arch blockage-clearing device.This device is comparatively complicated, and at the two ends up and down of rotating storehouse, labyrinth combined labyrinth and carbon gland system is housed, and is easy to the coal dust explosion phenomenon causing fine particle.
Such as Authorization Notice No. is the Chinese utility model patent of CN202092124U again, it discloses a kind of Large CFB Boiler Anti Plugging Bunker, comprise coal bunker and liner, the middle and lower part of coal bunker is hyperbolic configuration, be connected with little coal bunker bottom coal bunker, the entrance arranged outside of little coal bunker has dredge outlet.Its structure is simple, improves the shape of coal bunker and the material of liner, can effectively prevent coal from blocking up the generation of phenomenon, cancels the upper device such as such as loosening machine, air bubble etc. installed of run coal bin design in the past, reduces manufacturing cost.But when loading a large amount of coal dusts, the phenomenon blocked still can be there is at the hyperbola position, middle and lower part of coal bunker; In addition, dredge only by dredge outlet, can not ensureing that this coal bunker is dredged in time when there is blocking, causing potential safety hazard.
Utility model content
In order to solve the above-mentioned technological deficiency that prior art exists, the purpose of this utility model is to provide the device preventing powder retrieving pipe from blocking in a kind of separator of coal pulverizer, installs temperature monitor and vibrator outside the powder retrieving pipe of separator additional; Be provided with turnover panel in powder retrieving pipe, when blocking occurs the powder retrieving pipe of coal pulverizer, temperature monitor sends warning, and controller starts vibrator and regularly pulls turnover panel to carry out activity, guarantees the unimpeded of powder retrieving pipe.
In order to realize above-mentioned purpose of design, the scheme that the utility model adopts is as follows:
The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer, comprises the powder retrieving pipe being positioned at separator lower end, the outside reload temperature detector of described powder retrieving pipe and vibrator.When blocking occurs the powder retrieving pipe of coal pulverizer, temperature monitor sends warning, and controller starts vibrator and regularly pulls turnover panel to carry out activity, guarantees the unimpeded of powder retrieving pipe.
Preferably, turnover panel is provided with in described powder retrieving pipe.When blocking occurs the powder retrieving pipe of coal pulverizer, temperature monitor sends warning, and controller starts vibrator and regularly pulls turnover panel to carry out activity, guarantees the unimpeded of powder retrieving pipe.
In above-mentioned either a program preferably, the lower end of described powder retrieving pipe is provided with coal unloading tube.
In above-mentioned either a program preferably, described vibrator carries out On-line Control by controller.When blocking occurs the powder retrieving pipe of coal pulverizer, temperature monitor sends warning, and controller starts vibrator and regularly pulls turnover panel to carry out activity, guarantees the unimpeded of powder retrieving pipe, there will not be the phenomenon that accident is delayed.
In above-mentioned either a program preferably, described turnover panel is pulled online by controller.When blocking occurs the powder retrieving pipe of coal pulverizer, temperature monitor sends warning, and controller starts vibrator and regularly pulls turnover panel to carry out activity, guarantees the unimpeded of powder retrieving pipe, there will not be the phenomenon that accident is delayed.
In above-mentioned either a program preferably, the alarm temperature of described temperature monitor is 35-40 DEG C.When temperature is higher than 45 DEG C; pulverized coal particle in powder retrieving pipe can explode owing to mutually directly colliding; therefore the temperature of temperature monitor is controlled at 40 DEG C; warning system when temperature reaches 40 DEG C on temperature monitor will be reported to the police; startup vibrator regularly pulls turnover panel to carry out activity by controller, guarantees the unimpeded of powder retrieving pipe.
In above-mentioned either a program preferably, described separator is arranged on the both sides of coal pulverizer.
In above-mentioned either a program preferably, the outlet temperature of described separator is 60-90 DEG C.Arrive after burner hearth to make qualified coal dust and can successfully burn, therefore the outlet temperature of separator will be controlled at 60-90 DEG C within the scope of this.
In above-mentioned either a program preferably, described coal pulverizer is double inlet and outlet coal mill.
In above-mentioned either a program preferably, described coal pulverizer is provided with cold-air flap and hot air disperser.The phenomenon of blasting in order to avoid the temperature in coal pulverizer is too high, therefore cold-air flap is set on coal pulverizer, cold-air flap opens feeding cold wind; And when burning in feeding burner hearth after the coal dust that coal pulverizer is ground will be separated by separator, in order to enter the coal dust Thorough combustion as early as possible in burner hearth, therefore the coal dust that separator is sent to be kept certain temperature, open hot air disperser in the process, pass into a hot blast, guarantee the coal dust Thorough combustion as early as possible sending into burner hearth.
In above-mentioned either a program preferably, the import of described coal pulverizer is connected with coal-grinding storehouse.
In above-mentioned either a program preferably, the lower end in described coal-grinding storehouse is provided with Limestone control device.In order to enable the raw coal in feeding coal pulverizer be ground substantially, therefore coal supply amount control device is set in the lower end in coal-grinding storehouse carries out controlling to send into the raw coal in coal pulverizer, the qualification rate of coal dust of increasing work efficiency, improve.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a preferred embodiment of separator according to coal pulverizer of the present utility model.
Fig. 2 is the structure principle chart of the Fig. 1 of the device preventing powder retrieving pipe from blocking in the separator according to coal pulverizer of the present utility model.
Attached number in the figure:
Vibrator 1, controller 2, temperature monitor 3, coal unloading tube 4, coal-grinding storehouse 10, powder retrieving pipe 11, turnover panel 12, separator 13, burner hearth 14, Limestone control device 15.
Detailed description of the invention
The following description is only exemplary and be not to limit the disclosure, application or purposes in essence.Be further described below in conjunction with the detailed description of the invention of Figure of description to the device preventing powder retrieving pipe from blocking in the separator of the utility model coal pulverizer.
As shown in Figure 1, according to the structural representation of a preferred embodiment of the separator of coal pulverizer of the present utility model.The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer, installs temperature monitor 3 and vibrator 1 additional outside the powder retrieving pipe 11 of separator 13; Be provided with turnover panel 12 in powder retrieving pipe 11, when blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11.
The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer of the present utility model, comprises the powder retrieving pipe 11 being positioned at separator 13 lower end, the outside reload temperature detector 3 of described powder retrieving pipe 11 and vibrator 1.When blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11.
The operation principle of the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer of the present utility model is: raw coal enters coal pulverizer 20 by feeder coal supply and grinds, coal dust after grinding is carried by wind and enters separator 13, separator 13 rough coal powder is separated return coal pulverizer 20 continue grinding, qualified coal dust by pulverized coal channel send into burner hearth 14 burn.Burn fully as early as possible to make the coal dust entered in burner hearth 14, arrange hot air disperser to carry out passing into a hot blast in the exit of coal pulverizer 20, impel and from the isolated qualified coal dust of separator 13, there is certain temperature and enter in burner hearth 14, burn fully as early as possible in burner hearth 14.In powder retrieving pipe 11, there is the phenomenon blocked in order to prevent underproof coal dust, being provided with turnover panel 12 in powder retrieving pipe 11, and carrying out On-line Control by controller 2.When blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11.
In the present embodiment, described coal pulverizer 20 is double inlet and outlet coal mill.Double inlet and outlet coal mill is the main equipment of the direct-firing coal-grinding pulverized coal preparation system in thermal power plant, this equipment has that the rate of working continuously is high, easy to maintenance, grinding is exerted oneself and fineness is stablized, storage capacity is large, response rapidly, operational flexibility greatly, lower coal-air ratio, be suitable for the advantages such as coal scope is wide.
In the present embodiment, described coal pulverizer 20 is provided with cold-air flap and hot air disperser.The phenomenon of blasting in order to avoid the temperature in coal pulverizer 20 is too high, therefore cold-air flap is set on coal pulverizer 20, cold-air flap opens feeding cold wind; And when the coal dust that coal pulverizer 20 is ground to be separated by separator 13 burn in rear feeding burner hearth 14 time, in order to enter the coal dust Thorough combustion as early as possible in burner hearth 14, therefore the coal dust that separator 13 is sent to be kept certain temperature, open hot air disperser in the process, pass into a hot blast, guarantee the coal dust Thorough combustion as early as possible sending into burner hearth 14.
In the present embodiment, the import of described coal pulverizer 20 is connected with coal-grinding storehouse 10.
In the present embodiment, the lower end in described coal-grinding storehouse 10 is provided with Limestone control device 15.In order to enable the raw coal in feeding coal pulverizer 20 be ground substantially, therefore coal supply amount control device 15 is set in the lower end in coal-grinding storehouse 10 carries out controlling to send into the raw coal in coal pulverizer 20, the qualification rate of coal dust of increasing work efficiency, improve.
As shown in Figure 2, the structure principle chart of the Fig. 1 of the device preventing powder retrieving pipe from blocking in the separator according to coal pulverizer of the present utility model.In the present embodiment, turnover panel 12 is provided with in described powder retrieving pipe 11.When blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11.
In the present embodiment, the lower end of described powder retrieving pipe 11 is provided with coal unloading tube 4.
In the present embodiment, described vibrator 1 carries out On-line Control by controller 2.When blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11, there will not be the phenomenon that accident is delayed.
In the present embodiment, described turnover panel 12 is pulled online by controller 2.When blocking occurs the powder retrieving pipe 11 of coal pulverizer 20, temperature monitor 3 sends warning, and controller 2 starts vibrator 1 and regularly pulls turnover panel 12 to carry out activity, guarantees the unimpeded of powder retrieving pipe 11, there will not be the phenomenon that accident is delayed.
In the present embodiment, the alarm temperature of described temperature monitor 3 is 35-40 DEG C.When temperature is higher than 45 DEG C; pulverized coal particle in powder retrieving pipe 11 can explode owing to mutually directly colliding; therefore the temperature of temperature monitor 3 is controlled at 40 DEG C; warning system when temperature reaches 40 DEG C on temperature monitor 3 will be reported to the police; startup vibrator 1 regularly pulls turnover panel 12 to carry out activity by controller 2, guarantees the unimpeded of powder retrieving pipe 11.
In the present embodiment, described separator 13 is arranged on the both sides of coal pulverizer 20.
In the present embodiment, the outlet temperature of described separator 13 is 60-90 DEG C.Arrive after burner hearth 14 to make qualified coal dust and can successfully burn, therefore the outlet temperature of separator 13 will be controlled at 60-90 DEG C within the scope of this.
It will be apparent to those skilled in the art that the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer of the present utility model comprises any combination of each several part in this description.As space is limited and in order to make description simple and clear, these combinations are not introduced one by one in detail at this, but after having seen this description, the scope of the present utility model that any combination of each several part be made up of this description is formed is self-evident.
Claims (10)
1. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer, comprises the powder retrieving pipe (11) being positioned at separator (13) lower end, it is characterized in that: the outside reload temperature detector (3) of powder retrieving pipe (11) and vibrator (1).
2. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 1, is characterized in that: be provided with turnover panel (12) in powder retrieving pipe (11).
3. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 1 or 2, is characterized in that: the lower end of powder retrieving pipe (11) is provided with coal unloading tube (4).
4. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 1, is characterized in that: vibrator (1) carries out On-line Control by controller (2).
5. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 2, is characterized in that: turnover panel (12) is pulled online by controller (2).
6. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 1, is characterized in that: the alarm temperature of temperature monitor (3) is 35-40 DEG C.
7. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 1, is characterized in that: separator (13) is arranged on the both sides of coal pulverizer (20).
8. the device preventing powder retrieving pipe from blocking in the separator of the coal pulverizer as described in claim 1 or 7, is characterized in that: the outlet temperature of separator (13) is 60-90 DEG C.
9. the device preventing powder retrieving pipe from blocking in the separator of coal pulverizer as claimed in claim 7, is characterized in that: coal pulverizer (20) is double inlet and outlet coal mill.
10. the device preventing powder retrieving pipe from blocking in the separator of the coal pulverizer as described in claim 1 or 7, is characterized in that: coal pulverizer (20) is provided with cold-air flap and hot air disperser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489960.4U CN204034851U (en) | 2014-08-28 | 2014-08-28 | The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420489960.4U CN204034851U (en) | 2014-08-28 | 2014-08-28 | The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer |
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| Publication Number | Publication Date |
|---|---|
| CN204034851U true CN204034851U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420489960.4U Expired - Fee Related CN204034851U (en) | 2014-08-28 | 2014-08-28 | The device preventing powder retrieving pipe from blocking in the separator of coal pulverizer |
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| Country | Link |
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| CN (1) | CN204034851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971820A (en) * | 2015-07-17 | 2015-10-14 | 江苏大唐国际吕四港发电有限责任公司 | Coal pulverizing system using vibrators and control method of coal pulverizing system |
| CN107321486A (en) * | 2017-08-21 | 2017-11-07 | 烟台龙源电力技术股份有限公司 | A kind of twin-stage returns powder device and coal pulverizer |
-
2014
- 2014-08-28 CN CN201420489960.4U patent/CN204034851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104971820A (en) * | 2015-07-17 | 2015-10-14 | 江苏大唐国际吕四港发电有限责任公司 | Coal pulverizing system using vibrators and control method of coal pulverizing system |
| CN104971820B (en) * | 2015-07-17 | 2017-12-12 | 江苏大唐国际吕四港发电有限责任公司 | A kind of pulverized coal preparation system and its control method using vibrator |
| CN107321486A (en) * | 2017-08-21 | 2017-11-07 | 烟台龙源电力技术股份有限公司 | A kind of twin-stage returns powder device and coal pulverizer |
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Legal Events
| Date | Code | Title | Description |
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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: 20141224 Termination date: 20160828 |