CN202453059U - Acquisition and data processing system for coal feed quantity of coal feeder - Google Patents
Acquisition and data processing system for coal feed quantity of coal feeder Download PDFInfo
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Abstract
The utility model discloses an acquisition and data processing system for the coal feed quantity of a coal feeder, composed of the coal feeder, a front drum, a rear drum, belts of the drums, weight sensors and belt carrier rollers installed below the belts, a raw coal bunker and a coal dropping pipe arranged above a housing of the coal feeder, a motor, and a data processing DCS (distributed control system) model. The acquisition and data processing system is characterized in that the weight sensors at the left side and the right side of the belts are installed between the front carrier roller and the rear carrier roller, and the signal wires of the two weight sensors are connected with a TC (turbo cache) card of the DCS system; and a motor rotational speed signal wire of a frequency converter for controlling the motor is connected with an AI (artificial intelligence) card of the DCS system. After sampling and data processing modes for the coal feed quantity of the coal feeder are changed, the coal feed quantity is accurate and reliable, and the automatic use rate of pulverized coal is high; the zero drift, poor linearity, crash, automatic restart, and failure of a weighing instrument are avoided; the defect of unreliable belt speed of the coal feeder is avoided; and equipment maintenance is reduced, the expense of spare parts is reduced by 95%, the influence of a field environment is avoided, and the coal feeder works normally at any time. Simultaneously, the real-time coal quantity of the belts of the coal feeder is increased.
Description
Technical field
The utility model belongs to a kind of collection and data handling system that is suitable for the feeder coal-supplying amount of fuel-burning power plant use.
Background technology
In recent years electric coal is under-supply, and electric ature of coal amount descends, and the main utility appliance of thermal power plant is difficult under the design conditions to be moved; Feeder chute blockage, disconnected coal frequently take place; There is bigger risk in burning to burner hearth, finds that the untimely boiler that causes is flame-out, brings bigger loss for society and company.Whether the coal-supplying amount that for this reason gets into burner hearth is accurate, particularly important to the safety and the economical operation of unit.Convert 4-20mA into after the calculating of thermal power station's feeder coal-supplying amount at present adopts weighing instrument that the feeder coal-supplying amount is calculated and deliver to the DCS system.There are problems such as zero point drift, the linearity is bad, the feeder belt speed is unreliable in weighing instrument itself; Add in recent years the disconnected coal of thermal power station's feeder and frequently take place with chute blockage, the air bubble of installing on the feeder and vibrator frequent operation, after feeder operation one-month period, coal-supplying amount weighing instrument existence deadlock, automatically restart with weighing instrument bad; Problems such as the rotational speed probe of weighing instrument is subjected to displacement, and reference value changes, and the bad point of feeder speed is perhaps inaccurate.Get into the coal-supplying amount neither one exact value of boiler combustion, move the burning of keeping burner hearth by experience usually, the security of boiler combustion and economy can not get fine assurance.Increase operations staff's labour intensity, also increased the maintenance of equipment, more be unfavorable for the calculating and the control of power plant's coal cost.
Summary of the invention
The purpose of the utility model provides a kind of collection and data handling system of feeder coal-supplying amount; Collection and data processing to the feeder coal-supplying amount adopt new method to undergo technological transformation; Convert 4-20mA into after the fuel-burning power plant adopts weighing instrument that the feeder coal-supplying amount is calculated at present and deliver to the DCS system to solve; There is zero point drift in weighing instrument, the linearity is bad, the feeder belt speed is unreliable; Get into the coal-supplying amount neither one exact value of boiler combustion, the security of boiler combustion and economy can not get the problem of fine assurance.
The technical scheme of taking: the collection of feeder coal-supplying amount and data handling system; Constitute by feeder belt, front and back cylinder, the weight sensor, the belt roller that are installed in belt below, run coal bin and coal spout, feeder motor, frequency converter and the data processing DCS system model that is positioned at feeder shell top; Wherein: the weight sensor 7,8 of belt 5 left and right sides is installed in the centre of former and later two carrying rollers 6,9, and the signal of two weight sensors is connected on the TC card 15 of DCS system through lead 17; The motor speed signal line of the frequency converter (16) of control motor (18) is connected on the AI card of DCS system; Frequency converter run signal line is connected on the DI card of DCS system.
Wherein the DCS system model is made up of weight data module, feeder belt speed data module and feeder coal-supplying amount data module three parts.
The formation of weight data module is: the conversion of signals that TC card 15 is gathered weight sensors 7 is that hardware point module 19 connects lead-lag piece 20, after connect subtraction block 21, connect division module 22 down, connect average module 23 again; Wherein, be connected to the numerical value input block 54 of zero correction on the subtraction block 21, be connected to the numerical value input block 53 that span is proofreaied and correct on the division module 22; Equally, be that the conversion of signals that TC card 15 is gathered weight sensors 8 is that hardware point module 50 connects lead-lag piece 51 corresponding to the connected mode of the signal acquisition module of weight sensor 8, after connect subtraction block 52, connect division module 47 down, connect average module 23 again; Wherein, be connected to the numerical value input block 49 of zero correction on the subtraction block 52, be connected to the numerical value input block 48 that span is proofreaied and correct on the division module 47; Connect ratio module 24 after the average block 23, connect another ratio module 29 and multiplier module 30 respectively down.
The formation of feeder belt speed data module is: AI card 14
aThe conversion of signals of gathering frequency converter speed is a hardware point module 44; One the tunnel connects multistage linear function module 43; After connect data switching module 42, another road connects quality judge module 45, connects data handoff block 42 again; The data handoff block connects multiplier module 30 42 times, wherein is connected to numerical value input block 46 on the data switching module 42.
The formation of feeder coal-supplying amount data module: DI card 14
bThe conversion of signals of gathering the frequency converter operation is a hardware point module 44; Under divide two-way, one tunnel that connect chute blockage signal output respectively and module 25 and disconnected coal signal output with module 26, another road connects not gate module 40; Under connect data switching module 34, after connect coal-supplying amount display module 33; Wherein be connected to numerical value input block 32 on the data switching module 34.Multiplier module 30 and data switching module 34 indirect proportional modules 31, ratio module 31 also connect respectively division module 35 and 38, two division modules 35 and 38 and connect after connect the numerical value input block 39 of range value again; Wherein, the display module 36 of 35 times connecting to neutral point percentages of division module, another division module connects the display module 37 of span percentage for 38 times.
The data module of disconnected coal and chute blockage constitutes: 29 fens two-way of ratio module, the one tunnel connect connect the output of chute blockage signal after the high value module 28 again with door module 25, another road connect connect that the coal signal that breaks exports after the low value module 27 again with module 26.
The good effect of the utility model is: cancellation feeder coal-supplying amount weighing instrument, deliver to the TC of DCS system card to the weight signal of LOAD CELLS, and utilization DCS system model function converts the real-time weight of current coal supply machine-made egg-shaped or honey-comb coal briquets into; The rotation-speed measuring device of cancellation weighing instrument, with the rotating speed of frequency converter, utilization DCS system model function converts the real-time speed of feeder belt into; It after multiplying each other these two parameters again the coal-supplying amount that a feeder gets into burner hearth.After the sampling of feeder coal-supplying amount and data processing method change, coal-supplying amount accurately and reliably, the automatic devoting rate of wind powder is high; There are not weighing instrument zero point drift, the bad defective of the linearity; Do not exist weighing instrument to crash, restart and bad defective of weighing instrument automatically; There is not the unreliable defective of feeder belt speed; The plant maintenance amount reduces, and the spare part expense has reduced 95%, does not receive the influence of site environment, and whenever in proper working order coal-supplying amount is.Increase the real-time coal amount of feeder belt simultaneously, in time drop into or withdraw from oil gun.
Description of drawings
Fig. 1 is the acquisition system structural drawing of feeder coal-supplying amount.
Fig. 2 is a feeder coal-supplying amount data processing module structural drawing.
Embodiment
Below in conjunction with accompanying drawing,, technical scheme is further specified as embodiment.
With reference to Fig. 1, the utility model is on the basis of original feeder coal supply system, to do collection and the data handling system of improving a kind of feeder coal-supplying amount that forms.Its gordian technique is: 1, feeder coal-supplying amount weighing instrument in the cancellation original system; Be connected on weight sensor 7,8 signals of the left and right sides that is positioned at belt 5 through lead 17 the TC card 15 of DCS system; The working power of its LOAD CELLS is connected on 9V.DC switch industrial power; The weight signal of LOAD CELLS is delivered to the TC of DCS system card, and utilization DCS system model function converts the real-time weight of current coal supply machine-made egg-shaped or honey-comb coal briquets into; 2, the rotation-speed measuring device of the former weighing instrument of cancellation, the rotating speed electrical signal line of frequency converter 16 is connected on the AI card 14a of DCS system, and utilization DCS system model function converts the real-time speed of feeder belt into; It after multiplying each other these two parameters again the coal-supplying amount that a feeder gets into burner hearth.Feeder coal-supplying amount mathematic(al) representation in the DCS system-computed:
F=T×S×3.6×K
(in the expression formula: the coal-supplying amount T/H of F feeder, the real-time rotating speed m/s of S feeder; The real-time weight signal Kg of T LOAD CELLS; K is the correction factor of coal-supplying amount)
The feeder run signal by the run signal line of frequency converter connect 16 meet the DCS system the DI card, its objective is that coal-supplying amount was not zero when solving feeder did not move.
The basic element of character and the structure thereof of the original coal supply system of feeder are constant; Utilize original feeder coal supply system again; Insert the TC card 15 of DCS system to what gather from the weight signal of weight sensor; After related-data handling module was carried out computing in the DCS system, dress changed the feeder weight data into; Insert feeder speed at the AI of DCS system card 14 from frequency converter
a, after related-data handling module was carried out computing in the DCS system, dress changed feeder belt speed data into.After multiplying each other these two parameters calculate the feeder coal-supplying amount again.
With reference to Fig. 1, the top of feeder shell 3 is run coal bins 1, and the coal in the run coal bin is through on the belt in the coal spout 2 access chassis cavities; The rotating force of motor 18 drives front roll 12 runnings through the gear shaft band, and the belt that is enclosed within on front roll 12 and the back roll 4 moves along clockwise direction, giving coal pulverizer 10 from the coal of run coal bin.Wherein, carrying roller 9 before be equipped with at the middle part below belt, back carrying roller 6.In the centre position of two carrying rollers, right side weight sensor 7, left side weight sensor 8 are installed in the both sides of belt.The weight signal of each weight sensor all is connected with the TC card 15 of DCS system through lead 17, and the working power of its weight sensor is connected on 9V.DC switch industrial power.The motor 18 that drives front roll 12 runnings is rotationally connected through gear coupling 13, and the power line of its frequency converter 16 of moving of motor 18 and control is connected, and frequency converter 16 is connected with DI card signal line with AI card in the DCS system.So promptly constitute the acquisition system of feeder coal-supplying amount.
Related process module in the DCS system is by the function branch: comprise the weight data module, speed data module, feeder coal-supplying amount data module three parts.
The weight data module: weight signal is gathered the weight sensor 7 of the feeder belt left and right sides and 8 signal, constitutes with two cover equal modules conversions; The weight signal of promptly being gathered by the TC card that receives signal 19 is given the subtraction block 21 that is connected with the numerical value input block 54 of zero correction through lead-lag piece 20, handles the division module 22 that the back is connected to the information input numerical value input block 53 of span calibration function; In like manner, the weight signal 50 that another weight sensor is collected by the TC card, through lead-lag piece 51, be connected to the subtraction block 52 of the numerical value input block 49 of zero correction, the division module 47 that is connected to the numerical value input block 48 that span proofreaies and correct is handled; Be input to two weight sensors 7 and 8 weight signal average module 23 of input after two division modules 22 and 47 are handled of TC card 15, reenter ratio module 24 and handle, the signal that obtains divides two-way, and one the road to multiplier module 30 calculating; Another road is to next ratio module 29, through high value module 28 to giving output chute blockage signal with module 25, or the coal signal that breaks to low value module 27 to another and module 26 outputs.
Feeder belt speed data module: the rate signal 44 of the frequency converter of gathering by the AI card 16; One the road delivers to and goes into data switching module 42 after multistage linear function module 43 is handled; Data switching module 42 is gone into through quality judge module 45 in another road, and data switching module 42 is connected with numerical value input block 46; Signal through data switching module 42 is handled is gone into multiplier module 30.Multiplier module 30 receives the weight sensor 7 gathered from the TC card or 8 and the weight signal after correlation module is handled and frequency converter of gathering from the AI card and rate signal after treatment; Do to calculate after ratio module 31 one road is delivered to data switching module 34 and show that on coal-supplying amount display module 33 another road is respectively through the display module 36 of demonstration at division module 35 to zero point and the display module 37 that shows through division module 38 to span.Two division modules 35 and 38 numerical value input blocks 39 that are connected to the range value.
Feeder coal-supplying amount data module: by DI card 14
bThe conversion of signals of gathering the frequency converter operation is a hardware point module 44; Under divide two-way, one tunnel that connect chute blockage signal output respectively and module 25 and disconnected coal signal output with module 26, another road connects not gate module 40; Under connect data switching module 34, after connect coal-supplying amount display module 33; Wherein be connected to numerical value input block 32 on the data switching module 34.Multiplier module 30 and data switching module 34 indirect proportional modules 31, ratio module 31 also connect respectively division module 35 and 38, two division modules 35 and 38 and connect after connect the numerical value input block 39 of range value again; Wherein, the display module 36 of 35 times connecting to neutral point percentages of division module, another division module connects the display module 37 of span percentage for 38 times.
The signal operational process of feeder coal-supplying amount data processing module is:
1, the signal of LOAD CELLS 7 is delivered to the card to the TC of DCS system, and according to the function of configuration, converting weight signal into is module 19; The weight data of module 19 reaches lead-lag piece 20.The data of the data of lead-lag piece 20 and numerical value load module value at 54 zero point reach subtraction block 21, and the value after subtracting each other is the data after subtraction block 21 is calculated.The data of subtraction block 21 and numerical value load module 53 span coefficient values reach mould division module 22, and the value after being divided by is exactly the weight of coal on the feeder belt, unit K g.
2, the signal of LOAD CELLS 8 is delivered to the TC of DCS system card, according to the function of configuration, converts weight signal 2 into, and promptly module 50; The weight data of module 50 reaches lead-lag piece 51.The data of the data of lead-lag module 51 and numerical value load module value at 49 zero point reach subtraction block 52, and the value after subtracting each other is the data after subtraction block 52 is calculated.The data of subtraction block 52 and numerical value load module 48 span coefficient values reach division module 47, and the value after being divided by is exactly the weight of coal on the feeder belt, unit K g.
3, the data of division module 22,47 reach average module 23, after both additions divided by 2, the data after promptly average module 23 is calculated.The data of average module 23 reach ratio module 24, are converted to the coal amount on every meter belt of unit length.The data of ratio module 24 reach next ratio module 29 and multiplier module 30 respectively.
4, the frequency converter motor speed signal is delivered to the AI of DCS system card, according to the function of configuration, converts feeder motor speed signal module 44 into, and the rotary speed data of module 44 reaches quality judge module 45 and multistage linear function module 43 respectively.Quality judge module 45 is a bad point at the rotary speed data of module 44, and it is output as " 1 "; Otherwise be " 0 ".Multistage linear function 43 according to a feeder belt speed test figure, is inserted configuration value (other feeder is implemented after the same method), changes out the rate signal of feeder belt.46 resets of numerical value load module.The data of the data of multistage linear function 43 and numerical value load module 46 reach data switching module 42.When quality judge module 45 was output as " 1 ", the data of numerical value load module 46 were selected in the output of data switching module 42; Otherwise select the data of multistage linear function module 43.
5, the data of the data of data switching module 42 and above-mentioned another ratio module 24 reach multiplier module 30.Because the data unit of ratio module 24 is Kg/m, the data unit of data switching module 42 is m/s, and the data unit of multiplier module 30 is T/H, has unit conversion, in order to simplify, uses again
The scale-up factor 2 of multiplier module 30 is inserted with " 3.6 " in " 3600/1000 "=3.6, is coal-supplying amount after both multiply each other.The data of multiplier module 30 reach ratio module 31, accomplish the correction of coal-supplying amount, are generally " 1 ", do not revise.The data of ratio module 31 reach data switching module 34, division module 35 and division module 38 respectively.
6, the feeder run signal sent of frequency converter is delivered to the DI of DCS system card, according to the function of configuration, converts feeder motor operation signal module 41 into.The number of module 41 reach chute blockage signal output respectively with module 25, disconnected coal signal output with module 26 and not gate module 40.32 resets of numerical value input block.When not gate module 40 was output as " 1 ", the data of numerical value input block 32 were selected in the output of data switching module 34; Otherwise the data of selection percentage module 31.The data of data switching module 34 reach display module 33 and show coal-supplying amount.
7, numerical value input block 39 is the range value of feeder coal-supplying amount, the T/H of unit.The data of the data of ratio module 31 and numerical value input block 39 reach division module 35 and division module 38 respectively.Be used for the feeder school and claim, meaningless when feeder normally moves.Percentage calculating at zero point when the value after division module 35 is divided by is claimed for the feeder school, the data of division module 35 reach display module 36 and show the percentages at zero point.Division module 38 is accomplished the span displayed value; Keeping the speed of feeder belt when the school is claimed is 0.1m/s, and the feeder left and right sides respectively adds the 17Kg standard test weight, and the standard coal-supplying amount after calculating is 29.21T/H; In the biasing of division module 38 inputs " 1 ", insert "-29.21 "; After division module 38 deducts 29.21 to the data of ratio module 31; Remove the range value of feeder coal-supplying amount again; Be the span displayed value of feeder school when claiming, the data of division module 38 reach display module 37 and show the span percentages.
8, the data of ratio module 24 reach next ratio module 29, and the feeder belt effectively carries coal length, and unit rice, the scale-up factor of ratio module 29 are inserted the feeder belt and effectively carried the coal length value.Ratio module 29 reaches high value module 28 and low value module 27 respectively, also has the demonstration effect simultaneously.High value module 28 when input is higher than 300Kg, is output as " 1 "; Otherwise be " 0 ".Low value module 27 when importing less than 100Kg, is output as " 1 "; Otherwise be " 0 ".The data of the data of high value module 28 and the motor-driven capable module 41 of coal supply of DI card collection reach and door module 25, when feeder moves, just allow the output of chute blockage signal.The data of the motor-driven capable module 41 of coal supply of the data of low value module 27 and the collection of DI card reach and door module 26, when feeder moves, just allow disconnected coal signal output.
The collection and the data handling system of the feeder coal-supplying amount of processing according to such scheme; Following good effect is arranged.
One, after the collection of feeder coal-supplying amount and the data processing technological transformation, the feeder coal-supplying amount brings following benefit accurately and reliably:
1, the feeder coal-supplying amount accurately and reliably, the automatic devoting rate of wind powder is high, the burner hearth burning is more abundant, unit is more economical, safety and reliable.
2, the coal-supplying amount that gets into burner hearth accurately and reliably is provided, helps the control of power plant's production cost, more help the distribution of unit load.
3, there are not weighing instrument zero point drift, the bad defective of the linearity; Do not exist weighing instrument to crash, restart and bad defective of weighing instrument automatically; Do not have the unreliable defective of feeder belt speed, the feeder coal-supplying amount is in proper working order at any time.
4, the feeder coal-supplying amount does not receive the influence of site environment.
5, alleviate operation labour intensity, the plant maintenance amount reduces, and the spare part expense has reduced 95%.
6, check-verifying period increases, and becomes 6 months by 3 months, even the longer time (changing belt and LOAD CELLS, except must the horse back school claiming).
7, the feeder coal-supplying amount accurately and reliably, operation can in time drop into or withdraw from oil gun, improves the security and the economy of boiler combustion, reduces flame-out number of times, reduces production cost.
8, change the collection and the data processing method of feeder coal-supplying amount, more simple and practical, easy to maintenance than before, coal-supplying amount more accurately and reliably.
Two, when drawing coal-supplying amount, increase the real-time coal amount of feeder belt, bring following benefit in addition:
1, utilizes on the belt coal amount in real time, can judge feeder whether disconnected coal or chute blockage, be convenient to move timely input or withdraw from oil gun.Especially most important under the situation that electric ature of coal amount descends, in time drop into oil gun, can surely fire, reduce flame-out number of times; In time withdraw from oil gun, can fuel-efficient production cost.
2, when the feeder off-duty, operation can the pulpit through belt in real time the coal amount judge whether to draw coal.Do not have in the past will go to check on the spot under the situation of this parameter, and can not accurately judge whether to draw coal; Perhaps ignore this work.When the needs application of load starts feeder, can not start because the coal on the feeder belt is too many.Nowadays utilize the real-time coal amount on the feeder belt, when greater than 300Kg, feeder must be drawn coal, and it is normal to guarantee that feeder starts.
Claims (3)
1. the collection of feeder coal-supplying amount and data handling system; Constitute by feeder belt, front and back cylinder, the weight sensor, the belt roller that are installed in belt below, run coal bin and coal spout, feeder motor, frequency converter and the data processing DCS system model that is positioned at feeder shell top; It is characterized in that the weight sensor (7,8) of belt (5) left and right sides is installed in the centre of former and later two carrying rollers (6,9), the signal wire of two weight sensors (17) is connected on the TC card (15) of DCS system; The motor speed signal line of the frequency converter (16) of control motor (18) is connected on the AI card of DCS system; Frequency converter run signal line is connected on the DI card connection of DCS system.
2. the collection of feeder coal-supplying amount according to claim 1 and data handling system is characterized in that the DCS system model is made up of weight data module, feeder belt speed data module and feeder coal-supplying amount data module three parts of coal, specifically:
The formation of the weight data module of a, coal is: the conversion of signals that TC card (15) is gathered weight sensor (7) is that hardware point module (19) connects lead-lag piece (20); After connect subtraction block (21); Under connect division module (22), connect average module (23) again; Wherein, be connected to the numerical value input block (54) of zero correction on the subtraction block (21), be connected to the numerical value input block (53) that span is proofreaied and correct on the division module (22); Equally; Corresponding to the connected mode of the signal acquisition module of weight sensor (8) is that the conversion of signals that TC card (15) is gathered weight sensor (8) is that hardware point module (50) connects lead-lag piece (51); After connect subtraction block (52); Under connect division module (47), connect average module (23) again; Wherein, be connected to the numerical value input block (49) of zero correction on the subtraction block (52), be connected to the numerical value input block (48) that span is proofreaied and correct on the division module (47); Connect ratio module (24) after the average block (23), connect another ratio module (29) and multiplier module (30) respectively down;
The formation of b, feeder belt speed data module is: AI card (14
a) conversion of signals of gathering frequency converter speed is hardware point module (44); One the tunnel connects multistage linear function module (43); After connect data switching module (42), another road connects quality judge module (45), connects data handoff block (42) again; Connect multiplier module (30) under the data handoff block (42), wherein be connected to numerical value input block (46) on the data switching module (42);
The formation of C, feeder coal-supplying amount data module: DI card (14
b) conversion of signals of gathering the frequency converter operation is hardware point module (44); Under divide two-way; One the tunnel connect respectively chute blockage signal output export with disconnected coal signal with module (25) with module (26); Another road connects not gate module (40), connects down data switching module (34), after connect coal-supplying amount display module (33); Wherein be connected to numerical value input block (32) on the data switching module (34); Multiplier module (30) and the indirect proportional module of data switching module (34) (31); Ratio module (31) also connects division module (35) and (38) respectively; Two division modules (35) and (38) and connect after, connect the numerical value input block (39) of range value again; Wherein, division module (35) is the display module (36) of connecting to neutral point displayed value down, connects the display module (37) of span displayed value under another division module (38).
3. data processing DCS system model according to claim 1 and 2; The data module formation that it is characterized in that DCS system model interruption coal and chute blockage is: ratio module (29) is divided two-way; One the tunnel connect connect the output of chute blockage signal after the high value module (28) again with door module (25), another road connect connect that disconnected coal signal exports after the low value module (27) again with module (26).
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| CN103674145A (en) * | 2013-12-17 | 2014-03-26 | 上海交通大学 | Method for metering mass flow of coal as fired of coal-fired unit in real time |
| CN103941606A (en) * | 2014-04-17 | 2014-07-23 | 大唐贵州发耳发电有限公司 | Thermal power plant weighing coal feeder control logic |
| CN104444256A (en) * | 2014-10-27 | 2015-03-25 | 中国神华能源股份有限公司 | Control method and system used for weighing-type belt coal feeder |
| CN110040386A (en) * | 2019-04-19 | 2019-07-23 | 国电电力发展股份有限公司大连开发区热电厂 | A kind of boiler as-fired coal individual metering system and method |
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| CN110282461A (en) * | 2019-08-02 | 2019-09-27 | 吉林电力股份有限公司四平第一热电公司 | Meterage in weighting feeder gives coal motor-driven assistor |
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| CN103674145A (en) * | 2013-12-17 | 2014-03-26 | 上海交通大学 | Method for metering mass flow of coal as fired of coal-fired unit in real time |
| CN103674145B (en) * | 2013-12-17 | 2016-05-04 | 上海交通大学 | A kind of coal-fired unit enters the real time measure method of stove coal quantity flow |
| CN103941606A (en) * | 2014-04-17 | 2014-07-23 | 大唐贵州发耳发电有限公司 | Thermal power plant weighing coal feeder control logic |
| CN104444256A (en) * | 2014-10-27 | 2015-03-25 | 中国神华能源股份有限公司 | Control method and system used for weighing-type belt coal feeder |
| CN110040386A (en) * | 2019-04-19 | 2019-07-23 | 国电电力发展股份有限公司大连开发区热电厂 | A kind of boiler as-fired coal individual metering system and method |
| CN110286608A (en) * | 2019-06-06 | 2019-09-27 | 上海蓝箭实业发展有限公司 | Run coal bin dynamic compensation deals system and method |
| CN110282461A (en) * | 2019-08-02 | 2019-09-27 | 吉林电力股份有限公司四平第一热电公司 | Meterage in weighting feeder gives coal motor-driven assistor |
| CN111537256A (en) * | 2020-05-22 | 2020-08-14 | 华能平凉发电有限责任公司 | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set |
| CN111537256B (en) * | 2020-05-22 | 2022-06-14 | 华能平凉发电有限责任公司 | Method and system for analyzing reason for unqualified AGC (automatic gain control) performance of thermal generator set |
| CN112525319A (en) * | 2020-08-24 | 2021-03-19 | 国家能源(山东)工程技术有限公司 | Intelligent fuel control system and method based on decentralized control |
| CN112255975A (en) * | 2020-09-17 | 2021-01-22 | 无锡利信能源科技有限公司 | Coal feeding rate control method of coal feeder based on DCS platform |
| CN113086553A (en) * | 2021-02-22 | 2021-07-09 | 大唐七台河发电有限责任公司 | Coal amount calculating and controlling system for coal feeder of thermal power plant |
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