CN106123026B - A kind of thermal power plant coal powder pipeline blocking method for early warning - Google Patents
A kind of thermal power plant coal powder pipeline blocking method for early warning Download PDFInfo
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- CN106123026B CN106123026B CN201610473565.0A CN201610473565A CN106123026B CN 106123026 B CN106123026 B CN 106123026B CN 201610473565 A CN201610473565 A CN 201610473565A CN 106123026 B CN106123026 B CN 106123026B
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- coal
- resistance coefficient
- characteristics resistance
- coefficient
- pulverizer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/02—Solid fuels
Abstract
The invention belongs to thermal power plant technical fields, disclose a kind of thermal power plant pulverized coal channel blocking method for early warning, include: real-time the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount obtained under a certain state of coal pulverizer, calculates the first characteristics resistance coefficient of coal pulverizer in this state；First characteristics resistance coefficient is proportional to the first Mill Systems resistance, and is inversely proportional to the product of the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；Obtain the second characteristics resistance coefficient under coal pulverizer pulverized coal channel normal condition and the third characteristics resistance coefficient under coal pulverizer pulverized coal channel blocked state；It according to the first characteristics resistance coefficient, the second characteristics resistance coefficient and third characteristics resistance coefficient, determines whether coal pulverizer pulverized coal channel blocks, independent characteristics resistance coefficient Judging index can be generated to every set pulverized coal preparation system, avoid accidentally sending out alarm.
Description
Technical field
The present invention relates to thermal power plant technical fields more particularly to a kind of thermal power plant pulverized coal channel to block the pre- police
Method.
Background technique
Thermal power plant is milled raw coal for coal dust by coal pulverizer, is transported to boiler furnace by pulverized coal channel and is fired
It burns, generates the steam that water supply is heated to design parameter by heat, steam enters steam turbine, and pushing turbine rotation drives power generation
Machine rotation, generates electric power.
Pulverized coal channel blocking is one of the accident that thermal power plant is easily sent out.Pulverized coal channel blocking can bring unfavorable shadow to boiler combustion
It rings, larger difficulty is brought to combustion adjustment.Meanwhile if pulverized coal channel blocking is found not in time, after coal dust is accumulated in pipeline
Spontaneous combustion can occur, scaling loss pipeline causes fire incident, and destory the scene equipment, causes biggish loss.
Thermal power plant does not have reliable plugging monitoring means at present, although existing part operation instrument can have plugging accordingly instead
Feedback, but it is not strong with pulverized coal channel blocking relevance, while the common normal operation adjustment of field device will also result in correlation table
The instruction of meter changes and fluctuation, operations staff can not differentiate normal variation and anomalous variation therein, can not also establish identification thing
Therefore warning index.Live pulverized coal channel blocking often occurs a period of time and occurs just to be run personnel when serious consequence
It was found that.
Summary of the invention
The embodiment of the present invention provides a kind of thermal power plant coal powder pipeline blocking method for early warning, can produce to every set pulverized coal preparation system
Raw independent characteristics resistance coefficient Judging index avoids accidentally sending out alarm.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
Step 1, the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets of coal pulverizer are obtained in real time
Amount, determines coal-grinding according to the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount
The first characteristics resistance coefficient of machine in this state；First characteristics resistance coefficient is proportional to the first Mill Systems resistance
Power, and it is inversely proportional to the product of the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；
Step 2, the second characteristics resistance coefficient and coal pulverizer coal pipe under coal pulverizer pulverized coal channel normal condition are obtained
Third characteristics resistance coefficient under road blocked state；First characteristics resistance coefficient is by the mill under the coal pulverizer normal condition
Coal machine system resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount determine；The third characteristics resistance coefficient is by the coal pulverizer coal dust
Mill Systems resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount under line clogging state determine；
Step 3, according to first characteristics resistance coefficient, second characteristics resistance coefficient and the third drag characteristic
Coefficient, determines whether the coal pulverizer pulverized coal channel blocks；
If first characteristics resistance coefficient is within the scope of the safety allowance of second characteristics resistance coefficient, the mill
Coal machine is in normal condition；
If first characteristics resistance coefficient is within the scope of the safety allowance of the third characteristics resistance coefficient, the mill
Coal machine is in pulverized coal channel blocked state.
Technical solution of the present invention compared with prior art the advantages of are as follows:
It alarms at the initial stage that pulverized coal channel plugging fault occurs, instructs the timely handling failure of operations staff, prevent more
The generation of major break down；Establish the independent characteristics resistance coefficient Judging index of every set pulverized coal preparation system；According to the change of system equipment situation
Change, carries out autonomous intelligence study, generate adaptive warning index；Comprehensively consider the variation of combustion adjustment bring normal parameter, keeps away
Exempt from accidentally to send out alarm；It only needs to complete on the basis of power plant's existing equipment, without hardware investment requirement.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow diagram that a kind of thermal power plant coal powder pipeline provided in an embodiment of the present invention blocks method for early warning；
Fig. 2 is under a kind of thermal power plant coal powder pipeline normal condition and pulverized coal channel congestion situations provided in an embodiment of the present invention
Collected data comparison schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Coal dust in pulverized coal channel is carried by the First air in pulverized coal channel, is sent to burner and is entered hearth combustion.
Coal dust in pipeline due to gravity will natural sediment, when First air carrying capacity be less than coal dust deposition when, Jiu Huifa
The blocking of soft coal powder pipeline.
The carrying capacity of First air is mainly influenced by air quantity, wind speed.Coal powder natural deposits mainly by coal dust amount and coal dust
The influence of specific gravity.When following one or more happens, when pulverized coal preparation system overall operation inclement condition, pulverized coal channel blocking
It may occur.
(a) resistance of ducting increases, wind speed reduces.
(b) horizontal pipe section is longer, coal dust deposition is more serious.
(c) pulverized coal particle is thicker, and specific gravity is larger.
There is 4-5 root pulverized coal channel in general coal pulverizer outlet, since system is constantly present a degree of inhomogeneities, coal dust
Line clogging first occurs at the relatively poor pulverized coal channel of a certain operation conditions, passes through the air quantity of this pipeline point after blocking originally
Other pipelines are flowed to, then other pulverized coal channel wind speed are opposite becomes larger, and operation conditions is opposite to be improved, and system will be in a certain coal pipe
Road is metastable in the case where blocking to be continued to run.Discover or coal dust until the large change of certain parameters is run personnel
Spontaneous combustion causes accident to be run personnel's discovery.
All be first to send out to export a certain independent pipeline in coal pulverizer when pulverized coal channel blocking occurs, at this time coal-supplying amount not under
Drop, air quantity can also be kept still flux matched with coal by the automatic adjustment of baffle, and system can continue surely under new equilibrium state
Fixed operation, since the through-flow gross area of system reduces at this time, system resistance will be increased accordingly.
Transfer a lot of pulverized coal channel blocking accidents for having different power plant a large amount of historical datas and its normal operation when
A large amount of historical datas, Macro or mass analysis calculate the characteristic index that mathematical model above is established, it can be seen that accident condition and normal
The notable difference of operation.As shown in Figure 1, abscissa represents the product of coal pulverizer inlet air quantity Yu coal-grinding machine-made egg-shaped or honey-comb coal briquets amount in figure, indulges and sit
Mark represents pulverized coal channel system resistance, draws after being calculated based on mass data before and after the one coal pulverizer plugging of certain power plant
System can obviously observe that data point when normal operational condition and pulverized coal channel block is located at different regions, it was demonstrated that exist
Characteristic index and can be used as judges the technological means of pulverized coal channel blocking.
The embodiment of the present invention provides a kind of thermal power plant coal powder pipeline blocking method for early warning, as shown in Fig. 2, the method includes
Following steps:
Step 1, the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets of coal pulverizer are obtained in real time
Amount, determines coal-grinding according to the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount
The first characteristics resistance coefficient of machine in this state；First characteristics resistance coefficient is proportional to the first Mill Systems resistance
Power, and it is inversely proportional to the product of the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；
Step 2, the second characteristics resistance coefficient and coal pulverizer coal pipe under coal pulverizer pulverized coal channel normal condition are obtained
Third characteristics resistance coefficient under road blocked state；Second characteristics resistance coefficient is by the mill under the coal pulverizer normal condition
Coal machine system resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount determine；The third characteristics resistance coefficient is by the coal pulverizer coal dust
Mill Systems resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount under line clogging state determine；
Step 3, according to first characteristics resistance coefficient, second characteristics resistance coefficient and the third drag characteristic
Coefficient, determines whether the coal pulverizer pulverized coal channel blocks；
If first characteristics resistance coefficient is within the scope of the safety allowance of second characteristics resistance coefficient, the mill
Coal machine is in normal condition；
If first characteristics resistance coefficient is within the scope of the safety allowance of the third characteristics resistance coefficient, the mill
Coal machine is in pulverized coal channel blocked state.
In step 1, the first Mill Systems resistance under a certain state of coal pulverizer is obtained in real time specifically: the first coal pulverizer
System resistance Δ P, Δ P=P-P0, P is coal pulverizer outlet pressure, P0For furnace pressure.
In step 1, first characteristics resistance coefficient is proportional to the first Mill Systems resistance, and is inversely proportional to described
The product of first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount, specifically: β=Δ P/ (kQ·Q)/(kB·B)；
β represents the first characteristics resistance coefficient of pulverized coal channel；Δ P represents the first Mill Systems resistance；Q represents the first coal-grinding
Fan delivery, B represent the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；kQRepresent coal-grinding fan delivery correction factor；kBRepresent coal-grinding machine-made egg-shaped or honey-comb coal briquets quantity correction coefficient.
In step 3, the peace of the safety allowance range of second characteristics resistance coefficient and the third characteristics resistance coefficient
Full tolerance are as follows:
Calculate the characteristics resistance coefficient difference of second characteristics resistance coefficient Yu the third characteristics resistance coefficient；
The safety allowance range of second characteristics resistance coefficient subtracts the resistance from second characteristics resistance coefficient
The 20% of characteristic coefficient difference adds the 20% of the characteristics resistance coefficient difference to second characteristics resistance coefficient.
The safety allowance range of the third characteristics resistance coefficient subtracts the resistance from the third characteristics resistance coefficient
The 20% of characteristic coefficient difference adds the 20% of the characteristics resistance coefficient difference to the third characteristics resistance coefficient.
The embodiment of the present invention introduce characteristics resistance coefficient concept, characteristics resistance coefficient represent in particular system air quantity,
Influence degree of the coal amount to system resistance.Realize that pulverized coal channel blocks the mesh of early warning by the monitoring to characteristics resistance coefficient
's.
Wherein, characteristics resistance coefficient β=f (Δ P, Q, B)；Specifically, β=Δ P/ (kQ·Q)/(kB·B)；
β represents pulverized coal channel characteristics resistance coefficient；Δ P represents system resistance, unit Pa；Q represents coal-grinding fan delivery (body
Product flow), unit m3/ s, B represent coal-grinding machine-made egg-shaped or honey-comb coal briquets amount, unit t/h；kQRepresent air quantity correction factor；kBRepresent the amendment of coal amount
Coefficient；
Δ P=P-P0；Wherein, P represents coal pulverizer outlet pressure, and unit Pa, P0 represent furnace pressure, unit Pa；
Q=D/ ρ；Wherein, D is represented coal-grinding fan delivery (mass flow), and unit t/h, ρ represent coal pulverizer outlet First air
Density, unit kg/m3；
ρ=f (T, P)；Specifically, ρ=P/RgT；Wherein, P represents coal pulverizer outlet pressure, and unit Pa, T represent coal-grinding
Machine outlet temperature, unit K, RgRepresent gas constant, unit Jkg-1·K-1；
When systems are functioning properly:
β '=f (Δ P ', Q ', B ')
When pulverized coal channel, which blocks, to be occurred:
β "=f (Δ P ", Q ", B ")
Line clogging early-warning system is established, pulverized coal channel resistance coefficient β is analyzed in real time, when β is approximately equal to β '
Judgement system is in normal condition, judges that coal dust blocking may occur for system as β >=β ", alarms.Alarming value can be set
It is set to more conservative numerical value, provides system certain safety allowance.
The specific calculating process of pulverized coal channel resistance coefficient is according to hydrodynamics classical theory and DL/T5145-2002 " firepower
Power plant pulverized coal preparation system design computing technique provide " calculation method determine, and pass through equipment long history data to calculating
As a result it is calculated and is corrected, guarantee pulverized coal channel resistance coefficient in the accurate and reliable of particular system.
A kind of thermal power plant coal powder pipeline provided in an embodiment of the present invention blocks method for early warning, do not need to increase test equipment and
Data acquisition and processing system directly utilizes existing dial plate parameter and DCS system, increases analysis software and early warning picture；
And alarm at the initial stage that pulverized coal channel plugging fault occurs, the timely handling failure of operations staff is instructed, more major break down is prevented
Generation；Establish the independent characteristics resistance coefficient Judging index of every set pulverized coal preparation system；According to the variation of system equipment situation, carry out
Autonomous intelligence study, generates adaptive warning index；Comprehensively consider the variation of combustion adjustment bring normal parameter, avoids accidentally transmitting messages
It is alert；It only needs to complete on the basis of power plant's existing equipment, without hardware investment requirement.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (4)
1. a kind of thermal power plant coal powder pipeline blocks method for early warning, which is characterized in that described method includes following steps:
Step 1, the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount of coal pulverizer are obtained in real time,
Determine that coal pulverizer exists according to the first Mill Systems resistance, the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount
The first characteristics resistance coefficient under the state；First characteristics resistance coefficient is proportional to the first Mill Systems resistance,
And it is inversely proportional to the product of the first coal-grinding fan delivery and the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；
Step 2, the second characteristics resistance coefficient and the resistance of coal pulverizer pulverized coal channel under coal pulverizer pulverized coal channel normal condition are obtained
Third characteristics resistance coefficient under plug-like state；First characteristics resistance coefficient is by the coal pulverizer under the coal pulverizer normal condition
System resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount determine；The third characteristics resistance coefficient is by the coal pulverizer pulverized coal channel
Mill Systems resistance, coal-grinding fan delivery and coal-grinding machine-made egg-shaped or honey-comb coal briquets amount under blocked state determine；
Step 3, according to first characteristics resistance coefficient, second characteristics resistance coefficient and third drag characteristic system
Number, determines whether the coal pulverizer pulverized coal channel blocks；
If first characteristics resistance coefficient is within the scope of the safety allowance of second characteristics resistance coefficient, the coal pulverizer
In normal condition；
If first characteristics resistance coefficient is within the scope of the safety allowance of the third characteristics resistance coefficient, the coal pulverizer
In pulverized coal channel blocked state.
2. a kind of thermal power plant coal powder pipeline according to claim 1 blocks method for early warning, which is characterized in that real in step 1
When obtain a certain state of coal pulverizer under the first Mill Systems resistance specifically: the first Mill Systems resistance Δ P, Δ P=
P-P0, P is coal pulverizer outlet pressure, P0For furnace pressure.
3. a kind of thermal power plant coal powder pipeline according to claim 1 blocks method for early warning, which is characterized in that in step 1, institute
It states the first characteristics resistance coefficient and is proportional to the first Mill Systems resistance, and be inversely proportional to the first coal-grinding fan delivery and institute
The product of the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount is stated, specifically: β=Δ P/ (kQ·Q)/(kB·B)；
β represents the first characteristics resistance coefficient of pulverized coal channel；Δ P represents the first Mill Systems resistance；Q represents the first coal pulverizer wind
Amount, B represent the first coal-grinding machine-made egg-shaped or honey-comb coal briquets amount；kQRepresent coal-grinding fan delivery correction factor；kBRepresent coal-grinding machine-made egg-shaped or honey-comb coal briquets quantity correction coefficient.
4. a kind of thermal power plant coal powder pipeline according to claim 1 blocks method for early warning, which is characterized in that in step 3, institute
State the safety allowance range of the second characteristics resistance coefficient and the safety allowance range of the third characteristics resistance coefficient are as follows:
Calculate the characteristics resistance coefficient difference of second characteristics resistance coefficient Yu the third characteristics resistance coefficient；
The safety allowance range of second characteristics resistance coefficient subtracts the drag characteristic from second characteristics resistance coefficient
The 20% of coefficient differentials adds the 20% of the characteristics resistance coefficient difference to second characteristics resistance coefficient；
The safety allowance range of the third characteristics resistance coefficient subtracts the drag characteristic from the third characteristics resistance coefficient
The 20% of coefficient differentials adds the 20% of the characteristics resistance coefficient difference to the third characteristics resistance coefficient.
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| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
| CN115138468A (en) * | 2022-07-06 | 2022-10-04 | 西安热工研究院有限公司 | Coal mill pulverized coal pipeline blockage early warning method and device and electronic equipment |
| CN117169447B (en) * | 2023-11-02 | 2024-01-26 | 南通海济环保科技有限公司 | Sewage pipeline cleaning detection method and detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283259Y (en) * | 1997-03-21 | 1998-06-03 | 东南大学 | Measurer for measuring flue pipe inner air stream for power station boiler |
| CN201352219Y (en) * | 2009-01-05 | 2009-11-25 | 中能联源（北京）技术有限公司 | Air and pulverized coal flow rate on-line monitoring system and air and pulverized coal on-line monitoring system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08141420A (en) * | 1994-11-18 | 1996-06-04 | Ishikawajima Harima Heavy Ind Co Ltd | Method of feeding coal to mill and device therefor |
| US20100218591A1 (en) * | 2007-06-21 | 2010-09-02 | Rhodes George W | Method and apparatus for controlling relative coal flow in pipes from a pulverizer |
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2016
- 2016-06-24 CN CN201610473565.0A patent/CN106123026B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283259Y (en) * | 1997-03-21 | 1998-06-03 | 东南大学 | Measurer for measuring flue pipe inner air stream for power station boiler |
| CN201352219Y (en) * | 2009-01-05 | 2009-11-25 | 中能联源（北京）技术有限公司 | Air and pulverized coal flow rate on-line monitoring system and air and pulverized coal on-line monitoring system |
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