CN112833420A - Automatic coal feeding optimization system and method - Google Patents
Automatic coal feeding optimization system and method Download PDFInfo
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- CN112833420A CN112833420A CN202011493594.6A CN202011493594A CN112833420A CN 112833420 A CN112833420 A CN 112833420A CN 202011493594 A CN202011493594 A CN 202011493594A CN 112833420 A CN112833420 A CN 112833420A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/52—Fuzzy logic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2239/00—Fuels
- F23N2239/02—Solid fuels
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Abstract
The application discloses automatic coal-fired feeding optimization system and method, wherein the coal-fired feeding method in a coal yard comprises the following steps: acquiring coal quantity information and coal quality information of each coal pile in a coal yard; predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality; acquiring combustion information of the mixed coal; correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information; acquiring boiler load information; and predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption. According to the method, the consumption of the coal quantity is accurately predicted by collecting information data of various coals, so that the coal feeding time and the coal feeding quantity are controlled, and the problems that a raw coal bin is not full of coal before coal stopping or the raw coal bin is full of coal after coal stopping, a belt stops running under a heavy load condition and the like are solved.
Description
Technical Field
The application relates to the technical field of thermal power generation, in particular to a coal-fired automatic feeding optimization system and method.
Background
The coal feeding of the coal yard is realized by controlling the lifting and falling of the coal plough, and distributing the coal on the coal conveying belt to each raw coal bin according to the coal level condition of the raw coal bin. In the current stage, the power plant mostly adopts an artificial coal feeding mode to feed the fire coal, the coal feeding process is to check the coal level of a raw coal bunker by an operator, then the feeding time and the feeding amount of the fire coal are automatically determined according to the coal level of the raw coal bunker, and the feeding of the fire coal is completed by controlling the lifting of the coal plough. The coal feeding mode is carried out by judging all operations by operators, so that the system often has the problems that a raw coal bin is not full of coal before coal stopping or the raw coal bin is full of coal after coal stopping, a belt is stopped under a heavy load condition, and the like.
Disclosure of Invention
The embodiment of the application aims to provide a fire coal automatic feeding optimization system and a fire coal automatic feeding optimization method, so as to at least solve the problem that the existing coal consumption prediction is not accurate.
The technical scheme of the application is as follows:
according to a first aspect of embodiments of the present application, there is provided a coal-fired automatic feeding method, including:
acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
acquiring combustion information of the mixed coal;
correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information;
acquiring boiler load information;
and predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
Further, after the coal consumption prediction is performed according to the boiler load information, the accurate coal quality information and the coal quantity information, the method further comprises the following steps:
acquiring the actual coal consumption;
and correcting the predicted consumption according to the actual coal consumption to obtain the accurate predicted consumption.
Further, acquiring the coal quantity information of each coal pile in the coal yard comprises:
acquiring three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
Further, acquiring the actual coal consumption, including:
acquiring coal feeding amount information and raw coal bin position change information;
and calculating the actual coal consumption according to the coal feeding amount information and the bin position change information of the raw coal bin.
Further, after the coal consumption prediction is performed according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption, the method further comprises the following steps:
acquiring coal feeding time information and coal feeding amount information of fire coal;
and adjusting the position of the coal pile according to the coal feeding time information and the coal feeding amount information, and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
According to a second aspect of embodiments of the present application, there is provided a coal-fired automated feeding system, which may include:
the first acquisition module is used for acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
the coal quality prediction module is used for predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
the second acquisition module is used for acquiring combustion information of the mixed coal;
the coal quality prediction correction module is used for correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information;
the third acquisition module is used for acquiring boiler load information;
and the consumption prediction module is used for predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
Further, the system further comprises:
the fourth obtaining module is used for obtaining the actual coal consumption;
and the consumption prediction and correction module is used for correcting the predicted consumption according to the actual coal consumption to obtain the accurate predicted consumption.
Further, obtaining the first obtaining module comprises:
the first acquisition unit is used for acquiring the three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and the first calculating unit is used for calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
Further, the fourth obtaining module includes:
the second acquisition unit is used for acquiring the coal feeding amount information and the raw coal bin position change information;
a second calculating unit for calculating the actual coal consumption according to the coal feeding amount information and the raw coal bunker position change information
Further, the system further comprises:
the fifth acquisition module is used for acquiring coal feeding time information and coal feeding amount information of the fire coal;
and the stacking module is used for adjusting the position of the coal pile opposite to each other according to the coal feeding time information and the coal feeding amount information and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
according to the method and the device, the coal quantity information and the coal quality information of each coal pile in the coal yard are obtained; predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality; acquiring combustion information of the mixed coal; correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information; acquiring boiler load information; and predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption. The consumption of the coal amount is accurately predicted by acquiring information data of various coals, so that the coal feeding time and the coal feeding amount are controlled, and the problems that a raw coal bin is not full of coal before coal stopping or the raw coal bin is full of coal after coal stopping, a belt is stopped under a heavy load condition and the like are solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application and are not to be construed as limiting the application.
FIG. 1 is a schematic flow diagram illustrating a coal fired automated loading process according to an exemplary embodiment;
FIG. 2 is a schematic diagram of a coal fired automated loading system configuration shown in accordance with an exemplary embodiment.
Detailed Description
In order to make the technical solutions of the present application better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
As shown in fig. 1, in a first aspect of embodiments of the present application, there is provided a coal-fired automatic charging method, including:
step 100: acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
step 200: predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
step 300: acquiring combustion information of the mixed coal;
step 400: correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information;
step 500: acquiring boiler load information;
step 600: and predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
According to the method, the consumption of the coal quantity is accurately predicted by collecting the information data of various coals, so that the coal feeding time and the coal feeding quantity are controlled, and the problems that a raw coal bin is not full of coal before coal stopping or the raw coal bin is full of coal after coal stopping, a belt stops running under a heavy load condition and the like are solved.
In some optional embodiments of the present application, after the coal consumption prediction is performed based on the boiler load information, the accurate coal quality information, and the coal amount information, the method further comprises:
acquiring the actual coal consumption;
and correcting the predicted consumption according to the actual coal consumption to obtain the accurate predicted consumption.
In some optional embodiments of the present application, obtaining the coal amount information of each coal pile in the coal yard includes:
acquiring three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
In some optional embodiments of the present application, obtaining the actual coal consumption comprises:
acquiring coal feeding amount information and raw coal bin position change information;
and calculating the actual coal consumption according to the coal feeding amount information and the bin position change information of the raw coal bin.
In some optional embodiments of the present application, after the coal consumption prediction is performed according to the boiler load information, the accurate coal quality information, and the coal amount information, and the predicted consumption amount is obtained, the method further includes:
acquiring coal feeding time information and coal feeding amount information of fire coal;
and adjusting the position of the coal pile according to the coal feeding time information and the coal feeding amount information, and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
In a specific embodiment of the application, the embodiment is a coal loading scene of a thermal power plant, an internal field of the coal yard is small, an area of the coal yard is limited, in order to fully utilize a space of the coal yard to improve a coal storage capacity of the coal yard, 50-70 kinds of coal sources of fire coal need to be divided into 3-5 kinds of coal according to coal quality, and the coal yard needs to be spatially divided, stacked in regions and stacked in a high height according to coal of different kinds of coal in the plant. The circular coal yard reclaimer needs to reclaim coal piles of a plurality of coal types when coal is reclaimed, the coal reclaiming operation area is large, the coal reclaiming period is long, a coal feeding plan is made manually in a factory, randomness is provided, the operation not only easily causes the natural phenomenon of the coal piles caused by overlong coal piling time, but also causes the phenomenon of uneven distribution of the coal amount in the coal yard.
Carrying out volume calculation on an annular coal pile in a circular coal yard through three-dimensional modeling, and establishing an accurate coal pile model to realize accurate calculation of the coal storage amount of the coal yard; meanwhile, the coal quality of a coal pile formed by mixing and stacking the coals of various coal sources and similar coal qualities is predicted, and the predicted coal quality information is stored in a database so as to be compared with the actual coal quality of the coal as fired detected by the coal quality detection system, and the actual coal quality information is fed back to optimize and correct the prediction model, so that the accuracy of the coal quality prediction system is ensured.
After the coal quantity and the coal quality of the coal in the coal yard are accurately calculated and predicted, the consumption prediction of the coal quantity of the coal is needed according to the prediction of boiler load, the coal quality and the coal level of the coal in the raw coal bunker, and the model for predicting the coal quantity consumption can be optimized and corrected according to the actual coal consumption so as to ensure the realization of planned coal feeding, accurately determine the coal feeding time and the coal feeding quantity of the coal, reasonably stack the coal and ensure the uniformity of the coal storage of the coal yard. Meanwhile, a coal blending plan can be made according to the load prediction of the boiler so as to ensure that the coal quality and the coal quantity of the coal in the raw coal bunker meet the load requirement of the boiler and ensure the safe and stable operation of the boiler.
The coal-fired shape in the coal yard, the three-dimensional coordinates of the stacking position and the coal-fired coal level in the raw coal bunker are measured through the coal-reeling instrument and the ultrasonic material level instrument of the raw coal bunker, wherein after a coal feeding plan is formulated, the DCS control system can control the coal plough to automatically lift and fall, and the automatic feeding of the coal is realized. The coal blending scheme is guaranteed to meet the unit requirements to the greatest extent, the aim of accurately controlling the coal feeding time and the coal feeding amount is achieved, and the problems that manual coal feeding is inaccurate and blending combustion is not guaranteed at the present stage are solved.
The accuracy of the coal quality of the coal as fired is the key for ensuring the safe and stable operation of the boiler, the accuracy of the coal quality as fired needs to determine the coal level and the coal quality of a raw coal bunker, accurately predict the load of the boiler, and simultaneously make an accurate coal feeding plan, thereby realizing the intelligent coal feeding of a coal yard.
The coal piling early warning device is also arranged in the raw coal bunker in the embodiment and comprises a coal piling monitoring device, an audible and visual alarm device and a power supply device, the power supply device is respectively connected with the power input ends of the coal piling monitoring device and the audible and visual alarm device, and the signal output end of the coal piling monitoring device is connected with the signal input end of the audible and visual alarm device; the structure of the coal piling monitoring device is as follows: the coal piling trigger conductor is connected with the base electrode of a transistor, the collector electrode of the transistor is connected with one end of a resistor and the base electrode of the transistor, the other end of the resistor is respectively connected with one end of the resistor, the cathode of a diode, one end of a capacitor and the positive voltage output end of a power supply device, the other end of the resistor is connected with the collector electrode of the transistor, the emitter electrode of the transistor is respectively connected with one end of the capacitor and one end of a coil of a contactor, the other end of the capacitor is respectively connected with the other end of the coil of the contactor, the other end of the resistor, the other end of the capacitor, the anode of the diode and the negative voltage output end of the power supply device, and the emitter electrode of the transistor is connected with the coal piling trigger conductor after being connected with.
The structure of the power supply device is as follows: the transformer is characterized in that the transformer comprises a transformer, the input end of the transformer is respectively connected with a voltage input positive end and a voltage input negative end, a first output end of the transformer is connected with an input positive end of a rectifier bridge, a second output end of the transformer is connected with an input negative end of the rectifier bridge, an output positive end of the rectifier bridge is connected with a voltage output positive end of a power supply device, and an output negative end of the rectifier bridge is connected with a voltage output negative end of the power supply device.
The structure of the sound-light alarm device is as follows: the contactor comprises a buzzer, a light emitting tube and an audible and visual alarm circuit board, wherein the audible and visual alarm circuit board is connected between the positive voltage output terminal and the negative voltage output terminal of a power supply device in series, one end of the buzzer is connected with one end of a normally open contact of the contactor, the other end of the normally open contact of the contactor is connected with the positive voltage input terminal of the power supply device, and the other end of the buzzer is connected with the negative voltage input terminal of the power supply device after being connected with the light emitting tube in series; the input voltage of the power supply device is 380V, and the input voltage of the power supply device is 18V.
The model of the power supply device is KDW16A mining intrinsic safety power supply or KDW65 mining intrinsic safety power supply, the intrinsically safe DC18V voltage is output after the power supply of the power supply device is rectified, filtered and stabilized, the voltage is divided into three paths to supply power to load electrical equipment, one path of the power supply provides working power for the coal piling monitoring device, the second path of the power supply provides a working power main board for the audible and visual alarm device, and the third path of the power supply provides a closed loop formed by serially connecting an rimless normally open contact of an alternating current contactor of the coal piling monitoring device, a buzzer of an audible and visual alarm circuit board and a light emitting tube.
In a second aspect of embodiments of the present application, as shown in fig. 2, there is provided a coal-fired automated feeding system, which may include:
the first acquisition module is used for acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
the coal quality prediction module is used for predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
the second acquisition module is used for acquiring combustion information of the mixed coal;
the coal quality prediction correction module is used for correcting and predicting coal quality according to the combustion information to obtain accurate predicted coal quality information;
the third acquisition module is used for acquiring boiler load information;
and the consumption prediction module is used for predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
The system accurately predicts the coal consumption by acquiring the information data of various coals, thereby controlling the coal feeding time and the coal feeding amount, and further solving the problems that the raw coal bunker is not full of coal before coal stopping or is full of coal after coal stopping, the belt stops running under the heavy load condition and the like.
In some optional embodiments of the present application, the apparatus further comprises:
the fourth obtaining module is used for obtaining the actual coal consumption;
and the consumption prediction and correction module is used for correcting the predicted consumption according to the actual coal consumption to obtain the accurate predicted consumption.
In some optional embodiments of the present application, the obtaining the first obtaining module includes:
the first acquisition unit is used for acquiring the three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and the first calculating unit is used for calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
In some optional embodiments of the present application, the fourth obtaining module includes:
the second acquisition unit is used for acquiring the coal feeding amount information and the raw coal bin position change information;
a second calculating unit for calculating the actual coal consumption according to the coal feeding amount information and the raw coal bunker position change information
In some optional embodiments of the present application, the system further comprises:
the fifth acquisition module is used for acquiring coal feeding time information and coal feeding amount information of the fire coal;
and the stacking module is used for adjusting the position of the coal pile opposite to each other according to the coal feeding time information and the coal feeding amount information and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A coal-fired automatic feeding method is characterized by comprising the following steps:
acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
acquiring combustion information of the mixed coal;
correcting the predicted coal quality according to the combustion information to obtain accurate predicted coal quality information;
acquiring boiler load information;
and predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
2. The method of claim 1, wherein after the coal consumption prediction from the boiler load information, the accurate coal quality information, and the coal quantity information, the method further comprises:
acquiring the actual coal consumption;
and correcting the predicted consumption according to the actual coal consumption to obtain accurate predicted consumption.
3. The method of claim 2, wherein the obtaining coal quantity information for each coal pile in the coal yard comprises:
acquiring three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
4. The method of claim 2, wherein the obtaining actual coal consumption comprises:
acquiring coal feeding amount information and raw coal bin position change information;
and calculating the actual coal consumption according to the coal feeding amount information and the raw coal bin position change information.
5. The method of claim 1, wherein after said predicting coal consumption based on said boiler load information, said refined coal quality information, and coal quantity information, resulting in a predicted consumption, said method further comprises:
acquiring coal feeding time information and coal feeding amount information of fire coal;
and adjusting the position of the coal pile opposite side according to the coal feeding time information and the coal feeding amount information, and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
6. An automatic coal-fired feeding system, comprising:
the first acquisition module is used for acquiring coal quantity information and coal quality information of each coal pile in a coal yard;
the coal quality prediction module is used for predicting the coal quality of the mixed coal according to the coal quantity information and the coal quality information to obtain predicted coal quality;
the second acquisition module is used for acquiring combustion information of the mixed coal;
the coal quality prediction correction module is used for correcting the predicted coal quality according to the combustion information to obtain accurate predicted coal quality information;
the third acquisition module is used for acquiring boiler load information;
and the consumption prediction module is used for predicting the coal consumption according to the boiler load information, the accurate coal quality information and the coal quantity information to obtain the predicted consumption.
7. The apparatus of claim 6, further comprising:
the fourth obtaining module is used for obtaining the actual coal consumption;
and the consumption prediction correction module is used for correcting the predicted consumption according to the actual coal consumption to obtain accurate predicted consumption.
8. The method of claim 7, wherein obtaining the first acquisition module comprises:
the first acquisition unit is used for acquiring the three-dimensional coordinates of the shape and stacking position of each coal pile in the coal yard;
and the first calculation unit is used for calculating the volume of each coal pile according to the shape and the three-dimensional coordinates to obtain the coal quantity information of each coal pile.
9. The method of claim 7, wherein the fourth obtaining module comprises:
the second acquisition unit is used for acquiring the coal feeding amount information and the raw coal bin position change information;
and the second calculating unit is used for calculating the actual coal consumption according to the coal feeding amount information and the raw coal bunker position change information.
10. The method of claim 6, wherein the apparatus further comprises:
the fifth acquisition module is used for acquiring coal feeding time information and coal feeding amount information of the fire coal;
and the stacking module is used for adjusting the position of the coal pile opposite side according to the coal feeding time information and the coal feeding amount information and stacking the coal piles from near to far in sequence according to the coal feeding sequence.
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| CN113902311A (en) * | 2021-10-14 | 2022-01-07 | 华北电力科学研究院有限责任公司 | Coal conveying method and device |
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