CN109060615A - As-fired coal material partial size on-line analysis system - Google Patents
As-fired coal material partial size on-line analysis system Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 244
- 238000004458 analytical method Methods 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 title claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 52
- 238000005303 weighing Methods 0.000 claims abstract description 38
- 238000004513 sizing Methods 0.000 claims abstract description 33
- 238000007873 sieving Methods 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 9
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- 238000012856 packing Methods 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 abstract description 25
- 238000005070 sampling Methods 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 19
- 238000009826 distribution Methods 0.000 description 14
- 235000013339 cereals Nutrition 0.000 description 11
- 238000012216 screening Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 6
- 238000013461 design Methods 0.000 description 6
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- 238000012986 modification Methods 0.000 description 3
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- 238000003723 Smelting Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0288—Sorting the particles
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Abstract
The invention discloses a kind of as-fired coal material partial size on-line analysis systems, including sampler, drying unit (4), power screen sizing apparatus (5) and data processor (9), power screen sizing apparatus (5) is made of at least two-stage classifying screen, the Sieving and casing of classifying screens at different levels is different, classification hopper (6) is equipped with below the compass screen surface of every grade of classifying screen, the end of each classification hopper (6) is equipped with flap valve (7), flap valve (7) is equipped with weighing sensor (8), and each weighing sensor (8) is connected with the acquisition signal input part of the data processor.Automatic sampling of the present invention, drying, gradation sizing, weighing, returning charge, it can detect real-time different-grain diameter coal charge specific gravity and ratio data, and the parameters such as the boiler blow rate required, coal input quantity are adjusted by as-fired coal grain size curve data, so that boiler is reached best combustion efficiency, realizes the purpose of energy efficiency.The present invention have many advantages, such as it is full-automatic, in time, it is accurate measurement, at low cost.
Description
Technical field
The present invention relates to a kind of partial size on-line analysis systems, it is widely used in thermal power generation, coal, mine, coking, smelting
The industries such as gold, chemical industry, building.It is related specifically to thermal power plant as-fired coal partial size on-line analysis technology field.
Background technique
Thermal power plant circulating fluidized bed boiler is the coal particle of burning 0-13mm certain proportion particle diameter distribution.Current defeated coal
All manually sieve classification weighing completion is dried in field sampling, laboratory to as-fired coal droplet measurement in system after sieving approach,
It is not shorter than three hours from sample preparation sub-sieve experimental period is sampled to.And due to manually sampling in work belt, sampling people samples behaviour
Work is huge on experimental result influence, and there are many human factors to cause as-fired coal grain size curve data not during sampling analysis
Accurately；There is also security risks in sampling process；Manual sampling radix is inadequate, and data result seriously lags, and cannot feed back in real time
Data, experimental result adjust nothing reliably referring to value in real time to boiler combustion, seriously affect when boiler body operation is burnt
Operating parameter adjustment, so that the grain size curve of boiler design burning and practical adjustment are not met, efficiency of fire coal is unable to get raising.
By retrieval, there is a kind of online granularmetric analysis system, it is that an infrared laser head acquisition is filled on belt feeder
The method of particle size data, and this method has ended in failure in practice operation, there is several fatal technologies for this method
Defect: 1, belt feeder run when site environment very severe, especially dust is larger, practice have shown that ten minutes less than when
Between in coal ash be just largely adhered on laser head, if eyes have coverd with one layer of black paper, cause unsighted；2, the coal on belt feeder
Expect that sundries is more, common situation is the mixing of hydrogenous coal spoil and coal slime, and the thin foam of high-moisture and spoil bonding are blocky, in addition coal
Mud and thin foam are also in that bonding is blocky, and infrared laser head can not identify at all and cause to judge by accident inside it；3, laser acquisition data are
Belt feeder surface is not fixed at random because sieving and falling into coal particle position on as-fired coal belt feeder after broken process, many broken
Partial size after bulky grain partial size afterwards is hidden in belt bottom and sieves is on belt feeder surface, so infrared laser is with originally adopting
The exceeded particle size data of big grain for being hidden in belt motor spindle is not collected.
In consideration of it, requiring a reliable online grain to improve the monitoring of coal-burning power plant's granularity and intelligent power plant construction
Spend detection system.
It as the saying goes: " coal-powder boiler plays calorific value, and fluidized-bed combustion boiler plays partial size ".The efficiency of combustion and as-fired coal grain of fluidized-bed combustion boiler
Diameter distribution situation and boiler air quantity, wind speed, coal input quantity etc. and many factors are closely bound up, by as-fired coal be distributed when monitor in fact
Data can adjust the combustion parameters such as air quantity, wind speed in real time, more to meet the raising of boiler combustion efficiency.Pass through real-time particle diameter distribution
Data can also adjust the sieving approach device efficiency parameter of leading portion in advance, prepare entering for different particle size distribution according to different coals quality
Furnace coal curve.
Partial size on-line analysis system main purpose is being to be to solve: manipulating circulating fluidized bed boiler to boiler operatiopn management
Real data when personnel provide one of as-fired coal in different coals quality, different-grain diameter, passes through different as-fired coal coal quality partial size point
Cloth supplemental characteristic matches corresponding boiler control parameters, and boiler is made to reach best combustion efficiency.
Well-known, circulating fluidized bed boiler is the boiler for eating coarse cereals, it is not limited to the equal incendivity such as gangue, coal slime, mixed coal, and
Come that calorific value Parameters variation in coal is very big, grope state also in one in the economy best combustion industry of boiler.For more
Good solves the problems, such as this, real data when partial size on-line analysis system data are provided to boiler manipulator.
Coal major parameter first is that calorific value, circulating fluidized bed boiler are for burning inferior coal spoil and other low heat value materials
And design production, calorific value more soft is bigger for gangue calorific value, more non-breakable, into boiler combustion for institute
The as-fired coal particle diameter distribution needed is harsher.Conversely, principle of readjustment, restructuring, consolidation and improvement as-fired coal partial size required for boiler combustion is got in coal quality calorific value
It is distributed well-to-do.
The production design of circulating fluidized bed boiler has different manufacturers, also there is different size model.Domestic production producer is main
Have: the companies such as Dongfang Electric, Shanghai is electrical, Harbin is electrical, the West China energy, Wuxi Hua Guang, Jinan boiler, the capacity type of boiler
More than ten grades number from 35t/hCFB to 2215t/hCFB.And each boiler design has different characteristics, i.e., using same
Coal quality, required as-fired coal particle diameter distribution is still different, so boiler factory provides the Theoretical combustion of a specific coal most
Often there is a certain range of deviation with regard to actual conditions in good value.For this purpose, partial size on-line analysis system joint coal quality calorific value with
Particle diameter distribution state is in optimum state to the manipulation of boiler convenient for boiler operator to one real time data of boiler manipulator.
The as-fired coal particle size distribution data inaccuracy obtained by original method not in time, causes boiler cannot be because of coal quality and partial size
Variation and generate corresponding variation, coal amount as above, the blow rate required, screening, broken corresponding adjustment.This system facilitates coal measures processed
System and boiler operatiopn system realize that real time execution is adjusted.
Partial size on-line analysis system belongs to a part in coal handling system, and particle size distribution data result can instruct to adjust defeated coal
Items of equipment parameter in system is also the reference of boiler operatiopn system population parameter adjustment to optimum state, can also root
According to accumulation data analysis, guidance is made for boiler combustion and boiler design.
Guidance screening is made relevant parameter with crushing plant and adjusts to reach most preferably to enter by partial size on-line analysis system data
Furnace coal Particle size requirements.Major boiler factory instructs as-fired coal particle diameter distribution by taking 300MW fluidized-bed combustion boiler group machine 1025t/hCFB as an example
Ratio are as follows: for coal quality about in 4800kCal/kg, partial size is 0-1mm accounting 20%；1-3mm accounting 25%；3-8mm accounting 45%；8-10
Accounting 12%, 10mm or more partial size are no more than 3%.Different according to coal calorific value, required as-fired coal particle size distribution range accounting is different, coal
Matter calorific value is lower, and it is more fewer harsher to be greater than 10mm Particle size requirements.Conversely, the coal quality calorific value the high then wider greater than 10mm Particle size requirements
Pine.
There is polarization phenomenon in numerous circulating fluidized bed boiler as-fired coal particle diameter distribution states in-service at present, (enter furnace
Coal partial size thickness ratio deviates too big unbalance) 60% or more the partial size accounting of 0-2mm fine powder, other 10mm or more coarse granule partial size
About 25% or more is accounted for, particle diameter distribution severely exceeds, and deviates scope of design.Sampling analysis result is fed back to boiler operation time at present
Serious lag, when data are reached in boiler Central Control Room, boiler combustion samples the coal charge of section completion of combustion already.Waste manpower and
Lab resources, while power plant boiler long term economical not being utilized to run, cause the fuel sources to million tens of thousands of daily unrestrained
Take.
Summary of the invention
A kind of partial size on-line analysis system is provided it is an object of the invention to overcome the deficiencies in the prior art, it fills up this
The blank in one field provides as-fired coal partial size real time data for boiler combustion, provides dynamic data support for boiler adjustment operation,
Improve boiler combustion efficiency.
The purpose of the present invention is achieved through the following technical solutions:
Scheme one: as-fired coal material partial size on-line analysis system, including sampler, drying unit, power screen sizing apparatus, returning charge dress
It sets and data processor, the sampler is used to extract as-fired coal material sample from the first as-fired coal belt, and will extraction
As-fired coal material sample delivery to the feeding inlet of the drying unit, the discharge port of the drying unit and the classifying screen dispense
The feed inlet set is connected, and the power screen sizing apparatus is made of at least two-stage classifying screen, and the Sieving and casing of classifying screens at different levels is mutual
It is not identical, classification hopper is equipped with below the compass screen surface of every grade of classifying screen, the end of each classification hopper is equipped with flap valve, turnover panel
Valve is equipped with weighing sensor, and each weighing sensor is connected with the acquisition signal input part of the data processor, the number
It is connected according to the control signal output of processor with the signal input part of flap valve；
The material-returning device includes the second as-fired coal belt below power screen sizing apparatus, the second as-fired coal skin
Band is set to the lower section of classification hopper, and the outlet of the first as-fired coal belt and the second as-fired coal belt is connected with boiler feed bin.
As-fired coal material partial size on-line analysis system, further includes database server, the data processor and described
Database server is connected, signal input part phase of the data processor also with the air blower of boiler, coal input quantity regulating valve
Even；
Different-grain diameter coal charge specific weight ratio data and air blower, coal input quantity regulating valve control are prestored in the database server
Parameter mapping table processed.
The data processor with show that equipment is connected on the spot.
The data processor is connected with the display equipment for being set to Central Control Room.
As-fired coal material partial size on-line analysis system, further includes the communication server and client, and the data processor is logical
It crosses communication network to be connected with the communication server, the client passes through the communication server described in communication network access.
The sampler includes coal plough, and the coal plough is bonded the first as-fired coal belt bottom plough and takes first to enter
Coal charge on furnace coal belt, the coal charge under ploughing fall into drying unit by feed inlet.
The drying unit includes roller, heating device, transmission device and temperature control instrument, and the inner wall of the roller is equipped with
Guide spiral, the screw pitch of guide spiral is interior to be equipped with guide scraping blade；The outer wall of roller is equipped with heating device, heating device and temperature controller
Table matches；The outer wall of roller is also equipped with transmission device, and transmission device drives roller rotation to push coal charge by spiral side
It marches forward；The feed inlet side of roller is equipped with the feed inlet matched with sampler, and the discharge port side of roller is equipped with and divides
The discharge port that the feed inlet of grade screening plant matches.
In scheme one, as-fired coal material partial size on-line analysis system is arranged in below the first as-fired coal belt, and described first
As-fired coal belt is equipped with coal plough, and coal plough plough takes the as-fired coal material on the first as-fired coal belt as sample.Coal charge sample
Fall through feed inlet to the drying unit, drying unit dries moisture in coal, the discharge port of the drying unit with described point
The feed inlet of grade screening plant is connected, and the power screen sizing apparatus is made of at least two-stage classifying screen, the sieve of classifying screens at different levels
Gradation diameter is different, is equipped with classification hopper below the compass screen surface of every grade of classifying screen, the end of each classification hopper is equal
Equipped with flap valve, flap valve bottom is equipped with weighing sensor, and each weighing sensor is connected with the data processor, described
Weighing data is transmitted to data processor, and data processor transfers data to Central Control Room and mobile phone terminal, the data processor
Control signal output be connected with flap valve, flap valve can according to equipment automatic open-close, weigh end blocking valve open (opening) claim
Coal charge sample after weight falls to the second as-fired coal belt, the second as-fired coal Belt Conveying to boiler feed bin.
Scheme two: as-fired coal material partial size on-line analysis system, including sampler, drying unit, power screen sizing apparatus and
Data processor, the sampler is used for the end parabola feeding from the first as-fired coal belt, and extraction is entered furnace
Coal charge sample delivery to the drying unit feeding inlet, the discharge port of the drying unit and the power screen sizing apparatus into
Material mouth is connected, and the power screen sizing apparatus is made of at least two-stage classifying screen, and the Sieving and casing of classifying screens at different levels is different,
Classification hopper is equipped with below the compass screen surface of every grade of classifying screen, the end of each classification hopper is equipped with flap valve, sets on flap valve
There is weighing sensor, each weighing sensor is connected with the acquisition signal input part of the data processor, the data processing
The control signal output of device is connected with the signal input part of flap valve；The lower section of the flap valve is equipped with the second as-fired coal skin
The outlet of band, the second as-fired coal belt is connected with boiler feed bin.
The sampler takes for realizing cutting coal charge parabola feeding, including hydraulic-driven component and feeding disk
Charging tray is mounted on the feeding inlet of drying unit by hydraulic-driven component.
In scheme two, as-fired coal material partial size on-line analysis system is arranged in above the second as-fired coal belt.Feeding mode
It is the first as-fired coal belt coal charge parabola feeding of cutting, when hydraulic push rod driving feeding disk cuts coal charge toward feeding disk when protracting
Parabola feeding, hydraulic push rod is reduced to stop backward after feeding, and hydraulic stem driving feeding disk raises up, and the coal charge in feeding disk is toward drying
Fall coal in equipment for drying, feeding disk by hydraulic push rod returns to original state after coal.Coal charge sample enters drying unit, drying dress
Drying moisture in coal is set, the discharge port of the drying unit is connected with the feed inlet of the power screen sizing apparatus, the classification
Screening plant is made of at least two-stage classifying screen, and the Sieving and casing of classifying screens at different levels is different, under the compass screen surface of every grade of classifying screen
Side is equipped with classification hopper, and the end of each classification hopper is equipped with flap valve, and flap valve bottom is equipped with weighing and sensing
Device, each weighing sensor are connected with the data processor, and the weighing data is transmitted to data processor, data processing
Device transfers data to Central Control Room and mobile phone terminal, and the control signal output of the data processor is connected flap valve with flap valve
Can be according to equipment automatic open-close, the coal charge sample that end blocking valve of weighing opens after (opening) weighing falls to the second as-fired coal belt,
Second as-fired coal belt is by sample delivery to boiler feed bin.
The difference of scheme one and scheme two: one is that as-fired coal material partial size on-line analysis system is located at as-fired coal belt
The relationship on top and lower part, secondly being that (scheme one is coal plough sampling, and scheme two takes for hydraulically extensible for the difference of sampling mode
Charging tray sampling), thirdly be returning charge mode difference (scheme one for weighing after belt returning charge, scheme two be weighing after coal sample it is straight
It connects and drops on as-fired coal belt).
As-fired coal material partial size on-line analysis system, further includes database server, the data processor and described
Database server is connected, and the data processor is also connected with master control room, and the database server of master control room can control pot
The setting of the relevant parameters such as air blower, coal input quantity regulating valve, screening machine, crusher, the belt feeder of furnace.
Different-grain diameter coal charge specific weight ratio data and air blower, coal input quantity, sieve are prestored in the database server
Extension set, crusher adjustment parameter mapping table.
The data processor with show that equipment is connected on the spot.
The data processor is connected with the display equipment for being set to Central Control Room.
The flap valve folding, is opened: being referred to and is opened channel coal charge samples fall down to belt feeder, close: referring to that closed channel starts
Weighing mode.
The weighing sensor is mounted to flap valve bottom surface, and weighing face is 0 degree of level.
As a preference, the power screen sizing apparatus, Sieving and casing is ascending to discharge port by feed inlet
Grain size grading.
As-fired coal material partial size on-line analysis system, including the communication server and client, the data processor pass through
Communication network is connected with the communication server, and the client may have access to the communication server by communication network, does in one's hands
Machine on-line monitoring.
As a preference, the drying unit is screw dryer, it is not limited to other types of drying equipment.
The power screen sizing apparatus is not limited to vibrating screen, roller picker, rotary screen, impeller sieve, sine screen, intersects sieve, sieve
It is distributed glassware, step sieve.
The sampler includes coal plough, feeding disk.The coal plough has unilateral coal plough and bilateral coal plough,
The feeding disk is not limited to sampling peck similar fashion.
The drying unit includes roller, heating device, transmission device and temperature control instrument, and the inner wall of the roller is equipped with
Guide spiral, the screw pitch of guide spiral is interior to be equipped with guide scraping blade；The outer wall of roller is equipped with heating device, heating device and temperature controller
Table matches；The outer wall of roller is also equipped with transmission device, and transmission device drives roller rotation to push coal charge by spiral side
It marches forward；The feed inlet side of roller is equipped with the feed inlet matched with sampler, and the discharge port side of roller is equipped with and divides
The discharge port that the feed inlet of grade screening plant matches.
The partial size on-line analysis system is connected with Central Control Room, by Central Control Room operator can when Real-time monitoring simultaneously
Coaling system items of equipment parameter is adjusted, readymade coal made of coal-making system is made to more tend to boiler as-fired coal Theoretical combustion curve grain
Diameter distribution, so that cooperation reaches boiler best combustion efficiency between the major-minor equipment of boiler.
Coal plough decentralization i.e. starting as-fired coal material partial size on-line analysis system, on the contrary then close reduction in the scheme one
Original coal handling system.
In the scheme two hydraulic push rod feeding disk extend to cutting coal charge parabola feeding start as-fired coal material partial size
On-line analysis system, it is on the contrary then close the original coal handling system of reduction.
The beneficial effects of the present invention are: automatic sampling of the present invention, drying, gradation sizing, weighing, returning charge, can detect real-time
Different-grain diameter coal charge specific weight ratio data, and by on-line analysis system transmit data, data handled by processor after on the spot
Mobile phone monitoring is sent to access network channel while long-range display.Teledata is automatically reminded to after the analysis of Central Control Room data
Central Control Room control staff manually or automatically adjusts the parameters such as the boiler blow rate required, coal input quantity, and control optimization burning condition makes boiler
Combustion curve tends to best Theoretical combustion efficiency, realizes the best combustion efficiency in boiler operatiopn, is finally reached the major-minor system of boiler
The purpose of system energy efficiency.The present invention have many advantages, such as it is full-automatic, in time, it is accurate measurement, at low cost.
Detailed description of the invention
Fig. 1 is one schematic diagram of whole structural scheme of the present invention:
Fig. 2 is two schematic diagram of whole structural scheme of the present invention:
In figure, 1- the first as-fired coal belt, 2- coal plough, 3- feed inlet, 4- drying unit, 5- power screen sizing apparatus, 6- classification
Hopper, 7- flap valve, 8- weighing sensor, 9- data processor, 10- the second as-fired coal belt, 11- boiler feed bin, 12-
Face, 13- hydraulic-driven component, 14- feeding disk.
Specific embodiment
Below in conjunction with embodiment, technical solution of the present invention is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field
Technical staff's every other embodiment obtained under the premise of not making the creative labor belongs to what the present invention protected
Range.
[embodiment 1] refering to fig. 1, as-fired coal material partial size on-line analysis system, positioned at the first as-fired coal belt 1 lower section,
On ground 12, including sampler, drying unit 4, power screen sizing apparatus 5, material-returning device and data processor 9, described takes
Sampling device is used to extract as-fired coal material sample from the first as-fired coal belt 1, and by the as-fired coal material sample delivery of extraction to institute
The feeding inlet of drying unit 4 is stated, specifically, the sampler includes coal plough 2, the fitting of coal plough 2 first enters
1 bottom of furnace coal belt plough takes the coal charge on the first as-fired coal belt 1, and the coal charge under ploughing falls into drying unit 4 by feed inlet 3.
The discharge port of the drying unit 4 is connected with the feed inlet of the power screen sizing apparatus 5, and the power screen sizing apparatus 5 is by extremely
Few two-stage classifying screen is constituted, and the Sieving and casing of classifying screens at different levels is different, is equipped with classification below the compass screen surface of every grade of classifying screen
The end of hopper 6, each classification hopper 6 is equipped with flap valve 7, and flap valve 7 is equipped with weighing sensor 8, each weighing sensor 8
It is connected with the acquisition signal input part of the data processor 9, the control signal output and turnover panel of the data processor 9
The signal input part of valve 7 is connected；
The material-returning device includes the second as-fired coal belt 10 set on 5 lower section of power screen sizing apparatus, and described second enters furnace
Coal belt 10 be set to classification hopper 6 lower section, the outlet of the first as-fired coal belt 1 and the second as-fired coal belt 10 with boiler material
Storehouse 11 is connected.
In the present embodiment, coal plough 2 is used for the plough from the first as-fired coal belt 1 and is taken into furnace coal charge sample, and plough is taken
As-fired coal material sample falls the feeding inlet sent to the drying unit 4, and drying unit 4 is used to dry the moisture in coal charge, the baking
The discharge port of equipment for drying 4 is connected with the feed inlet of the power screen sizing apparatus 5, and the power screen sizing apparatus 5 is by 2-10 fraction
Grade sieve is constituted, and the Sieving and casing of classifying screens at different levels is different, and power screen sizing apparatus 5 sorts the coal charge of different-grain diameter.Every fraction
Classification hopper 6 is equipped with below the compass screen surface of grade sieve, the classification hopper 6 is placed in the top of the second as-fired coal belt 10, often
The end of a classification hopper 6 is equipped with flap valve 7, and after each grade of classifying screen completes the weighing of coal charge, the control of data processor 9 is turned over
Plate valve 7 is opened, and is fallen to coal charge automatically on the second as-fired coal belt 10 and is realized returning charge.
[embodiment 2] is located at 10 top of the second as-fired coal belt feeder referring to Fig.2, as-fired coal material partial size on-line analysis system,
Including sampler, drying unit 4, power screen sizing apparatus 5 and data processor 9, the sampler from first for entering
The end parabola feeding of furnace coal belt 1, and by the as-fired coal material sample delivery of extraction to the feeding inlet of the drying unit 4.
Specifically, the sampler is for realizing cutting coal charge parabola feeding, including hydraulic-driven component 13 and feeding disk 14,
Feeding disk 14 is mounted on the feeding inlet of drying unit 4 by hydraulic-driven component 13.The discharge port of the drying unit 4 with it is described
The feed inlet of power screen sizing apparatus 5 is connected, and the power screen sizing apparatus 5 is made of at least two-stage classifying screen, classifying screens at different levels
Sieving and casing it is different, classification hopper 6 is equipped with below the compass screen surface of every grade of classifying screen, the end of each classification hopper 6 is equal
Equipped with flap valve 7, flap valve 7 is equipped with weighing sensor 8, and each weighing sensor 8 is believed with the acquisition of the data processor 9
Number input terminal is connected, and the control signal output of the data processor 9 is connected with the signal input part of flap valve 7；It is described to turn over
The lower section of plate valve 7 is equipped with the second as-fired coal belt 10, and the outlet of the second as-fired coal belt 10 is connected with boiler feed bin 11.
In the present embodiment, feeding mode is cutting 1 coal charge parabola feeding of the first as-fired coal belt, when hydraulic-driven component
13 driving feeding disks 14 cut coal charge parabola feeding toward feeding disk when protracting, and hydraulic-driven component 13 is reduced to only backward after feeding
Point, hydraulic-driven component 13 drive feeding disk 14 to raise up, and the coal object in feeding disk 14 takes after coal toward coal is fallen in drying unit 4
Charging tray 14 returns to original state by hydraulic-driven component 13.The control signal output and flap valve 7 of the data processor 9
It is connected, valve plate valve can be according to equipment automatic open-close, and the coal charge sample that end blocking valve 7 of weighing opens after (opening) weighing falls to second
On furnace coal belt 10, the second as-fired coal belt 10 is by sample delivery to boiler feed bin 11.
Preferably, as-fired coal material partial size on-line analysis system, further includes database server, the data processing
Device is connected with the database server, and the data processor Central Control Room that is also connected with the database of Central Control Room is controllable
The air blower of boiler, the signal control terminal of coal input quantity regulating valve are connected；Different-grain diameter is prestored in the database server
Coal charge specific weight ratio data and air blower, coal input quantity regulating valve control parameter mapping table.Detect various partial size coal charges
After specific weight ratio data, automatic comparison " different-grain diameter coal charge specific weight ratio data and air blower, coal input quantity regulating valve control parameter
Mapping table ", the air blower and coal input quantity regulating valve of automatic control boiler, makes boiler reach optimal combustion curve.
Preferably, the data processor can also show that on the spot equipment is connected, can show on the spot with/wireless/online
Show real-time coal charge partial size specific weight ratio data, Central Control Room can also be transmitted to, is shown in the display equipment of Central Control Room, is
Central Control Room boiler operator provides real time data, and provides real time data support to manipulate the engineer of boiler combustion, completes
The entire technique of partial size on-line analysis.
Preferably, as-fired coal material partial size on-line analysis system, further includes the long-range communication server and client, institute
The data processor stated is connected by communication network with the communication server, and the client described in communication network access by leading to
Telecommunications services device.Client can be mobile phone, computer, tablet computer etc., can be cell phone application or computer based on C/S framework and answers
With software, it is also possible to the web browser based on B/S framework.Boiler manipulator, coal-making system operations staff, long-range administrator
Member etc. can be carried out data monitoring by the long-range APP of linking Internet and remotely assign adjustment instruction order.Remotely access partial size point
The Field Force of cloth Parameters variation data is adjusted the upper coal amount of coal handling system and adjusts screening, crushing plant discharging partial size,
It really realizes thermal power plant intelligently defeated coal, long-range monitoring, long-range management, internet can be accessed and carry out very-long-range monitoring management, reached
Energy efficiency, the purpose efficiently managed.
As a preference, the partial size on-line analysis system is mounted on along the upper and lower position of as-fired coal belt feeder, side
Case one is the lower side of as-fired coal belt feeder, and scheme two is above the center line of as-fired coal belt feeder, and scheme one and scheme two are equal
It is as-fired coal belt feeder angle in 0 degree of parallel lines arrangement.This partial size on-line analysis system may be provided at appointing on as-fired coal belt
It anticipates one section of tilting section, horizontal segment, drop point section.
As a preference, the drying unit 4 of the partial size on-line analysis system uses screw dryer, gradation sizing
Device 5 uses classifying screen, and screw dryer, the mode of movement of classifying screen are consistent.
As a preference, electronic scale weighing mode, which can be used, in the weighing sensor 7 is also not necessarily limited to infrared ray photoelectric
Weighing.
As a preference, the partial size on-line analysis system machinery electric control part and the automatically controlled start-stop of the defeated coal of system interlock
It is connected；Coal charge drying temperature, classifying screen different size partial size weighing weight, comprehensive distributed data are connected with data processor, together
When linking Internet long-range app monitoring may be implemented, assign adjustment instruction order.
On-line analysis system is provided with control on the spot and long-range control.When equipment normally starts, on-line analysis system is
Real data when remotely controlling and providing to Central Control Room, controls on the spot in repair and maintenance.
In view of as-fired coal sampling error situation: the front-rear position relationship that crusher is arranged with screening machine is different, if broken
Under broken machine first plays after coal, screening machine, then the bulky grain partial size that will appear broken escape is all pressed onto 1 bottom of as-fired coal skin machine, and
Fine grained is all on 1 surface of as-fired coal belt feeder；Conversely, fine grained is all in 1 bottom of as-fired coal belt, and bulky grain partial size exists
1 surface of as-fired coal belt feeder.Traditional sampling mode is mostly surface feeding, can not objective reality reflection coal charge partial size specific gravity ratio
Example.For this problem, preferably, the sampling mode includes coal plough 2 and feeding disk 3, the coal plough patch
It closes 1 bottom of as-fired coal belt feeder and ploughs the as-fired coal material taken on as-fired coal belt feeder 1, the feeding disk 3 cuts coal charge parabola
Feeding is capable of the reflection coal charge partial size specific weight ratio of objective.
As a preference, the drying unit 4 includes roller, heating device, transmission device and temperature control instrument, it is described
The inner wall of roller is equipped with guide spiral, is equipped with guide scraping blade in the screw pitch of guide spiral；The outer wall of roller is equipped with heating device, adds
Thermal is matched with temperature control instrument；The outer wall of roller is also equipped with transmission device, and transmission device drives roller rotation to push away
Dynamic coal charge advances by the hand of spiral；The feed inlet side of roller is equipped with and matches with sampler (coal plough 2, feeding disk 3)
Feed inlet, the discharge port side of roller are equipped with the discharge port matched with the feed inlet of power screen sizing apparatus 5.
The 4 guide mode of drying unit is not limited to spiral and stock guide structure, and 1-6 can be set inside screw dryer
Dry guide in section.Heating device is electric heating in the drying unit 4, is not limited to hot-air circulation heating, water leg pipe
Heating.4 temperature control instrument of drying unit controls roller heating temperature to 50-900 degree, temperature control instrument and data processor 9
It is connected, temperature controls between coal charge not ignition temperature.
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
Claims (9)
1. as-fired coal material partial size on-line analysis system, it is characterised in that: including sampler, drying unit (4), classifying screen packing
(5), material-returning device and data processor (9) are set, the sampler from the first as-fired coal belt (1) for extracting into furnace
Coal charge sample, and by the feeding inlet of the as-fired coal material sample delivery of extraction to the drying unit (4), the drying unit (4)
Discharge port be connected with the feed inlet of the power screen sizing apparatus (5), the power screen sizing apparatus (5) by least two-stage be classified
Sieve is constituted, and the Sieving and casing of classifying screens at different levels is different, classification hopper (6) is equipped with below the compass screen surface of every grade of classifying screen, often
The end of a classification hopper (6) is equipped with flap valve (7), and flap valve (7) is equipped with weighing sensor (8), each weighing sensor
(8) it is connected with the acquisition signal input part of the data processor (9), the control signal output of the data processor (9)
End is connected with the signal input part of flap valve (7)；
The material-returning device includes the second as-fired coal belt (10) below power screen sizing apparatus (5), and described second
As-fired coal belt (10) is set to the lower section of classification hopper (6), the first as-fired coal belt (1) and the second as-fired coal belt (10) out
Mouth is connected with boiler feed bin (11).
2. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: further include database service
Device, the data processor (9) are connected with the database server, the data processor (9) also with boiler
Air blower, the signal input part of coal input quantity regulating valve are connected；
Different-grain diameter coal charge specific weight ratio data and air blower, coal input quantity regulating valve control are prestored in the database server
Parameter mapping table processed.
3. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: the data processor
With show that equipment is connected on the spot.
4. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: the data processor
It is connected with the display equipment for being set to Central Control Room.
5. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: further include the communication server
And client, the data processor are connected by communication network with the communication server, the client passes through communication network
Network accesses the communication server.
6. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: the sampler packet
It includes coal plough (2), the coal plough (2) is bonded the first as-fired coal belt (1) bottom plough and takes on the first as-fired coal belt (1)
Coal charge, the coal charge under ploughing fall into drying unit (4) by feed inlet (3).
7. as-fired coal material partial size on-line analysis system according to claim 1, it is characterised in that: the drying unit
It (4) include roller, heating device, transmission device and temperature control instrument, the inner wall of the roller is equipped with guide spiral, guide spiral
Guide scraping blade is equipped in screw pitch；The outer wall of roller is equipped with heating device, and heating device is matched with temperature control instrument；The outer wall of roller
It is also equipped with transmission device, transmission device drives roller rotation to push coal charge to advance by the hand of spiral；The feed inlet of roller
Side is equipped with the feed inlet matched with sampler, and the discharge port side of roller is equipped with the charging with power screen sizing apparatus (5)
The discharge port that mouth matches.
8. as-fired coal material partial size on-line analysis system, it is characterised in that: including sampler, drying unit (4), classifying screen packing
(5) and data processor (9) are set, the sampler is used for the end parabola feeding from the first as-fired coal belt (1), and
By the feeding inlet of the as-fired coal material sample delivery of extraction to the drying unit (4), the discharge port of the drying unit (4) and institute
The feed inlet for stating power screen sizing apparatus (5) is connected, and the power screen sizing apparatus (5) is made of at least two-stage classifying screen, at different levels
The Sieving and casing of classifying screen is different, and classification hopper (6), each classification hopper are equipped with below the compass screen surface of every grade of classifying screen
(6) end is equipped with flap valve (7), flap valve (7) be equipped with weighing sensor (8), each weighing sensor (8) with it is described
The acquisition signal input part of data processor (9) is connected, the control signal output and flap valve of the data processor (9)
(7) signal input part is connected；The lower section of the flap valve (7) is equipped with the second as-fired coal belt (10), second as-fired coal
The outlet of belt (10) is connected with boiler feed bin (11).
9. as-fired coal material partial size on-line analysis system according to claim 8, it is characterised in that: the sampler is used
Coal charge parabola feeding, including hydraulic-driven component (13) and feeding disk (14) are cut in realizing, feeding disk (14) passes through hydraulic
Driving assembly (13) is mounted on the feeding inlet of drying unit (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811027640.6A CN109060615A (en) | 2018-09-04 | 2018-09-04 | As-fired coal material partial size on-line analysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811027640.6A CN109060615A (en) | 2018-09-04 | 2018-09-04 | As-fired coal material partial size on-line analysis system |
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| CN201811027640.6A Pending CN109060615A (en) | 2018-09-04 | 2018-09-04 | As-fired coal material partial size on-line analysis system |
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Application publication date: 20181221 |