CN205761458U - A kind of coal pulverizer properly mixing burning Indonesia coal - Google Patents
A kind of coal pulverizer properly mixing burning Indonesia coal Download PDFInfo
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- CN205761458U CN205761458U CN201620542217.XU CN201620542217U CN205761458U CN 205761458 U CN205761458 U CN 205761458U CN 201620542217 U CN201620542217 U CN 201620542217U CN 205761458 U CN205761458 U CN 205761458U
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- coal
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- slag
- indonesia
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Abstract
A kind of coal pulverizer properly mixing burning Indonesia coal, including upper frame, middle support body and lower frame, wherein, upper frame has raw coal entrance, discharge, separator, once wind entrance, grinding roller and slag-drip opening in middle support body, have plate door, slag case, slag case to export in lower frame, discharge is connected to heat pipe, this heat pipe is circular ring type gravity assisted heat pipe, the annular cavity sealing two ends of heat pipe, intermediate hollow, the epimere of heat pipe is condensation segment, hypomere is evaporator section, and evaporator section is inside upper frame.This utility model can realize efficiently controlling outlet temperature, can arrange cinder, monitoring greenhouse cooling within coal pulverizer and suppression coal dust heat combustion by automatic vibration, and then can effectively control the fire prevention after coal powder natural and detonation.
Description
Technical field
This utility model relates to a kind of coal pulverizer, particularly relates to a kind of coal pulverizer properly mixed and burn Indonesia coal.
Background technology
Along with the controlled downward of rate for incorporation into the power network, domestic coal fired thermal power plant the operation pressure increases day by day, and part power plant is by mixing burning
Indonesia coal is increased economic efficiency, but owing to Indonesia coal has high volatile, high-moisture, low-ash feature, belongs to and be easy to
Fire, after-flame, and belong to dangerously explosive coal, and mix and burn Indonesia coal and differ farther out with the design coal of script boiler, example
As the volatilization of Indonesia coal moisture-and-ash-free basis is divided into 47.6%, index of expolsibility is up to 8.5, beyond answering that certain medium-speed pulverizer is recommended
By range limit 40%.Coal pulverizer is the vitals of pulverized coal preparation system in thermal power plant, and it is at high temperature air and can burning coal powder medium
Operating mode under run, if the improper thermal explosion etc. of may producing of combustion adjustment badly influences the safety of power plant.Therefore, burning is being mixed
The safety of pulverized coal preparation system must be taken into full account during Indonesia coal, take appropriate measures and avoid occurring the feelings of explosion of Coal Pulverizing System as far as possible
Condition.
At present, mainly in coal pulverizer inlet primary air piping, coal pulverizer mill top, the part such as coal pulverizer outlet there is heat
Quick-fried, slag case cinder is piled up too much simultaneously, and temperature is too high, the most easily causes coal dust deflagration accident having.For the current state of the art, carry
Go out a kind of coal pulverizer properly mixed and burn Indonesia coal, can effectively prevent the safe and effective coal pulverizer of thermal explosion.
Summary of the invention
The purpose of this utility model is that this mixes burning Indonesia coal for thermal power plant in prior art, if coal pulverizer combustion adjustment
Improper possible generation thermal explosion, has a strong impact on the safety of power plant, the problem causing bigger economic loss, it is provided that one can be effective
Prevent a kind of of thermal explosion from properly mixing the coal pulverizer burning Indonesia coal.
This utility model solves technical problem and be the technical scheme is that
A kind of coal pulverizer properly mixing burning Indonesia coal, including upper frame, middle support body and lower frame, wherein, has in upper frame
Raw coal entrance, discharge, separator, once wind entrance, grinding roller and slag-drip opening in middle support body, lower frame has plate door, slag
Case, slag case export, it is characterised in that discharge is connected to heat pipe, and this heat pipe is circular ring type gravity assisted heat pipe, the annular cavity of heat pipe
Sealing two ends, intermediate hollow, the epimere of heat pipe is condensation segment, and hypomere is evaporator section, and evaporator section is inside upper frame.
In above-mentioned, the condensation segment welded flange joint of this heat pipe.
In above-mentioned, at separator interior and discharge, temperature detector is installed.
In above-mentioned, the side plate outer surface of slag case correspondence slag-drip opening position installs vibration motor, and inner surface is provided with and comes and goes
The automatic scraping slag sheet that sector is stopped, automatic scraping slag sheet is by motor control.
In above-mentioned, having spiral blowing mouth at the discharge below heat pipe, spiral blowing mouth is made up of many bend pipes, spiral shell
Rotation arrangement.
The beneficial effects of the utility model are: provide a kind of coal pulverizer properly mixed and burn Indonesia coal, by heat pipe and once
The control of air quantity, can realize efficiently controlling pulverizer outlet temperature, by vibration motor and automatic plate door, and can automatic vibration row's coal
Slag, monitoring temperature coal pulverizer within, it is blown into nitrogen, lowers the temperature and suppress coal dust heat to fire and then can effectively control coal powder natural and quick-fried
Fire prevention after combustion, can also carry out technology by this utility model on the basis of the most common roller ring mill simultaneously
Transformation.
Accompanying drawing explanation
Fig. 1 is integrally-built positive view of the present utility model.
Fig. 2 is the positive view of discharge of the present utility model.
Fig. 3 is slag case partial sectional view of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings and specifically
This utility model is described further by embodiment.Should be appreciated that specific embodiment described herein is only in order to explain this reality
With novel, it is not used to limit this utility model.
As shown in Figure 1, Figure 2 and Figure 3, this utility model provide a kind of properly mix burn Indonesia coal coal pulverizer, including on
Support body 5, middle support body 4 and lower frame 1, wherein, have raw coal entrance 6, discharge 8, separator 10, in middle support body 4 in upper frame 5
Once wind entrance 2, grinding roller 11 and slag-drip opening 12, has plate door 13, slag case 14, slag case outlet 15, discharge 8 in lower frame 1
Being connected to heat pipe 7, this heat pipe 7 is circular ring type gravity assisted heat pipe, the annular cavity sealing two ends of heat pipe 7, intermediate hollow, heat pipe 7 upper
Section is condensation segment, and hypomere is evaporator section, and evaporator section is inside upper frame 5.There is temperature detector 9 separator 10 is internally installed,
Nitrogen inlet 3 is had on First air entrance 2.
Raw coal enters from raw coal entrance 6, grinds to form fine breeze through grinding roller 11, goes out from discharge 8 through separator 10
Go.Conveying power from raw coal to fine breeze is to be entered offer by First air from First air entrance 2.Separator 10 is to separate raw coal
With duff critical piece, inside upper frame 5, fine breeze all goes out discharge 8 through separator 10.Inside separator 10
Temperature detector 9 is installed, by temperature detection, is conducive to suppression coal dust heat combustion, when the temperature within separator 10 exceedes
Certain high temperature protection value, feeds back signal to controller, controls First air entrance 2 air quantity and strengthens；When the temperature within separator 10
Exceed superhigh temperature protection value, fed back signal to controller, controlled the switch of nitrogen inlet 3, be blown into nitrogen at First air entrance 2
Gas, lowers the temperature and suppresses coal dust heat to fire.When occurring separator 10 internal explosion or discharge 8 temperature to rise to ceiling value,
Stop coal pulverizer immediately to run, close all air doors and outlet portal, put into steam for fire xtinguishing.
Heat pipe 7 is installed on discharge 8, the heat near discharge 8 can be passed to by the evaporator section of heat pipe 7
The condensation segment of the heat pipe 7 outside coal pulverizer goes, and plays the effect to discharge 8 temperature control, in combination with Primary air flow control coal
Powder exports 8 outlet temperatures 65 ± 5 DEG C of operations.The condensation segment welded flange joint 16 of heat pipe 7, convenient and tube cell of delivering coal connects.
Discharge 8 is also provided with temperature detector 9, prevents coal dust productive set from exporting, causes temperature too high.When temperature height arrives
During certain value or find that discharge 8 blocks, in addition in time increasing primary air flow and strengthening purging, the also coal below heat pipe 7
The spiral blowing mouth 17 that powder exports at 8 is blown into air, plays cooling and blows the effect of discharge 8, described spiral blowing mouth
17 are made up of many bend pipe wind, helical arrangement.Being blown into by independent blower fan air inducing, high-speed air, through spiral blowing mouth 17, rises
The effect of dynamic helical flow, bend pipe wind is near the heat pipe 7 of discharge 8 simultaneously, can compare in time and conveniently productive set coal dust be gone out
The coal dust of mouth 8 blows logical.It is advantageous in that at nearly discharge 8 unitary part spiral blowing mouth 17, when discharge 8 blocks,
Electric energy need not be saved entirely by increasing primary air flow reinforcement purging, blows the in hgher efficiency of logical discharge 8 simultaneously.
Cold wind and hot blast that First air entrance 2 is mainly necessarily compared by mixing enter, and First air entrance air quantity can not
Too low, too low meeting causes the breeze airflow speed in discharge 8 too low, according to mixing main/vapor (steam) temperature, desuperheating water again after burning
Condition is asked in the isoparametric change of amount, wall temperature of heated surface, fly ash combustible material, and adjustment First air entrance 2, nitrogen inlet 3 obtain optimal
Air distribution mode and optimal excess air coefficient.The effect of nitrogen inlet 3 is to be blown into nitrogen, can lower the temperature and suppress coal dust heat to fire.
As it is shown on figure 3, the side plate outer surface of corresponding slag-drip opening 12 position of slag case 14 installs vibration motor 19, inner surface is installed
Having and make to come and go the automatic scraping slag sheet 20 that sector is stopped, automatic scraping slag sheet 20 is controlled by motor 18.Vibration motor 19 timing energization shakes
Moving, and motor 18 drives automatic scraping slag sheet 20, automatic scraping slag sheet 20 is made to come and go sector at slag case 14 inwall and is stopped, makes under cinder
Sliding, automatic plate door regularly or is switched automatically by gravity sensor, it is achieved self-timing deslagging, it is not necessary to artificial timing row
Slag, prevents cinder productive set spontaneous combustion and detonation.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be become
Change, and all these modifications and variations all should belong to the protection domain of this utility model claims.
Claims (5)
1. properly mix the coal pulverizer burning Indonesia coal, including upper frame, middle support body and lower frame, wherein, upper frame has former
Coal entrance, discharge, separator, once wind entrance, grinding roller and slag-drip opening in middle support body, lower frame has plate door, slag case,
Slag case exports, it is characterised in that discharge is connected to heat pipe, and this heat pipe is circular ring type gravity assisted heat pipe, the annular cavity two of heat pipe
End closure, intermediate hollow, the epimere of heat pipe is condensation segment, and hypomere is evaporator section, and evaporator section is inside upper frame.
A kind of coal pulverizer properly mixing burning Indonesia coal the most according to claim 1, it is characterised in that the condensation segment of this heat pipe
Welded flange joint.
The most according to claim 1 a kind of properly mix the coal pulverizer burning Indonesia coal, it is characterised in that at separator interior and
Discharge is provided with temperature detector.
A kind of coal pulverizer properly mixing burning Indonesia coal the most according to claim 1, it is characterised in that slag case correspondence slag-drip opening
The side plate outer surface of position installs vibration motor, and inner surface is provided with to be made to come and go the automatic scraping slag sheet that sector is stopped, automatic scraping slag
Sheet is by motor control.
A kind of coal pulverizer properly mixing burning Indonesia coal the most according to claim 1, it is characterised in that the coal below heat pipe
There is spiral blowing mouth in powder exit, and spiral blowing mouth is made up of many bend pipes, helical arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620542217.XU CN205761458U (en) | 2016-06-07 | 2016-06-07 | A kind of coal pulverizer properly mixing burning Indonesia coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620542217.XU CN205761458U (en) | 2016-06-07 | 2016-06-07 | A kind of coal pulverizer properly mixing burning Indonesia coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205761458U true CN205761458U (en) | 2016-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620542217.XU Expired - Fee Related CN205761458U (en) | 2016-06-07 | 2016-06-07 | A kind of coal pulverizer properly mixing burning Indonesia coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205761458U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890705A (en) * | 2017-04-18 | 2017-06-27 | 长春发电设备总厂 | A kind of medium-speed pulverizer |
| CN112032303A (en) * | 2020-08-11 | 2020-12-04 | 国电青山热电有限公司 | Coal pulverizer lower frame body seal structure |
-
2016
- 2016-06-07 CN CN201620542217.XU patent/CN205761458U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106890705A (en) * | 2017-04-18 | 2017-06-27 | 长春发电设备总厂 | A kind of medium-speed pulverizer |
| CN112032303A (en) * | 2020-08-11 | 2020-12-04 | 国电青山热电有限公司 | Coal pulverizer lower frame body seal structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210607 |