Belt coal flow real-time coal quality tracking control system

Abstract

This invention discloses a real-time coal quality tracking and control system for conveyor coal flow, comprising a digital coal bunker module to obtain coal quality information, a blending setting module to generate adjustment commands based on preset data, and a coal feeder adjustment module to adjust valve openings according to the commands; a coal quality tracking module to obtain conveyed coal quality data, a coal quality analysis module to analyze the data and generate a second adjustment command, and a coal flow tracking module to detect flow velocity and load weight and generate a third adjustment command; these adjustment commands are fed back to the coal feeder adjustment module, realizing real-time tracking and control of coal quality to improve combustion efficiency and stability; achieving real-time adjustment of coal quality and coal flow, ensuring consistency between coal quality and preset blending data, improving combustion efficiency, and reducing environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of coal quality testing technology, and more specifically to a real-time coal quality tracking and control system for conveyor coal flow. Background Technology

[0002] Currently, there is a lot of research on the whole process management of coal-fired power plants both at home and abroad. However, the entire process of "blending" and "combustion" of coal entering the furnace relies on the coal quality test data from mechanical sampling of coal entering the furnace. There is a lack of real-time coal quality testing equipment, the coal quality in the raw coal bunker cannot be transparently displayed, and there is a lack of support from real-time coal combustion and operation data. The lag is strong, and it cannot provide timely and effective guidance and evaluation opinions on boiler economics. The whole process management effect of power plants for complex coal types with large differences in coal quality characteristics is not ideal.

[0003] Traditional coal quality analysis in existing technologies mainly relies on manual sampling, sample preparation, and analysis, which is cumbersome and time-consuming, and cannot provide timely feedback on coal quality information, thus causing many drawbacks. In recent years, online detection methods have emerged, but their control over coal blending is not precise. The weight of different coal types during blending, the total weight involved in combustion, and the ash, sulfur, moisture, and calorific value of various types of coal all affect boiler combustion. Therefore, how to realize a real-time coal quality tracking and control system for belt conveyor coal flow that can increase the accuracy of blending and track the coal quality and coal flow of belt conveyors has become a problem to be solved in this technical field. Summary of the Invention

[0004] To address the above problems, the present invention provides the following technical solution:

[0005] A real-time coal quality tracking and control system for conveyor belt coal flow includes:

[0006] The digital coal bunker module is used to acquire coal quality information of coal piles at various locations within the coal bunker.

[0007] The blending setting module, which is connected to the digital coal bunker module, is used to generate corresponding adjustment instructions based on preset blending data.

[0008] The coal feeder adjustment module, which is connected to the blending setting module, is used to receive adjustment commands and adjust the valve opening so that coal of different qualities falls onto the conveyor belt.

[0009] A coal quality tracking module is installed above the conveyor belt to acquire coal quality data at the same position on the conveyor belt at various times.

[0010] The coal quality analysis module, which is connected to the coal quality tracking module and the coal feeder adjustment module, is used to analyze the transported coal quality data, calculate the difference between the preset blending data and the transported coal quality data, generate the corresponding adjustment command two according to the analysis results, and send it to the coal feeder adjustment module.

[0011] The coal flow tracking module is installed on the conveyor belt and connected to the coal feeder adjustment module. It is used to detect the flow rate and load of the conveyor belt, analyze and calculate the difference between the total amount of coal involved in combustion and the preset blending data, generate the corresponding adjustment command based on the analysis results, and send it to the coal feeder adjustment module.

[0012] Preferably, in the above-mentioned real-time coal quality tracking and control system for conveyor belt coal flow, the digital coal bunker module includes:

[0013] A coal pile division unit is set up inside the coal bunker. The coal pile division unit is preset with coal quality standards and divides the coal bunker area according to the preset coal quality standards.

[0014] The preset coal quality standards include ash content standards, calorific value standards, moisture standards, and sulfur content standards for various types of coal per unit mass.

[0015] A coal storage unit, which is connected to the coal pile division unit, is used to pile coal corresponding to a preset coal quality standard into the corresponding coal bunker area to form coal piles of different coal qualities.

[0016] The first coal quality testing unit consists of several units, each located at a coal pile in a different coal bunker area, and is used to test the coal quality information of each coal pile.

[0017] Preferably, in the above-mentioned real-time coal quality tracking control system for conveyor belt coal flow, the blending setting module includes:

[0018] The coal blending preset unit generates blending data based on the coal quality and quantity data required for the current boiler to participate in combustion.

[0019] The blending data includes total ash content standards, total calorific value standards, total moisture content standards, total sulfur content standards, and total coal consumption.

[0020] The instruction generation unit 1 is connected to the coal blending preset unit and is used to convert the current blending data into an adjustment instruction 1 that can be recognized by the coal feeder adjustment module.

[0021] Preferably, in the above-mentioned real-time coal quality tracking control system for belt coal flow, the coal feeder adjustment module includes:

[0022] Valves are installed at the outlet of each coal feeder to control the amount of coal conveyed for various types of coal.

[0023] An instruction receiving unit, which is connected to the instruction generating unit, is used to receive adjustment instructions;

[0024] An opening control unit, which is connected to the command receiving unit and the valve, is used to receive adjustment commands and control the opening of the valve according to the adjustment commands.

[0025] Preferably, in the above-mentioned real-time coal quality tracking control system for conveyor belt coal flow, the coal quality tracking module includes:

[0026] The second coal quality detection unit is fixedly installed above any position on the conveyor belt and acquires the coal quality data of the conveyed coal that falls on the conveyor belt by emitting rays.

[0027] A periodic control unit is connected to the second coal quality detection unit; the periodic control unit has a preset detection period and controls the irradiation frequency of the second coal quality detection unit according to the detection period.

[0028] Preferably, in the above-mentioned real-time coal quality tracking and control system for conveyor coal flow, the coal quality data includes the total calorific value, total ash content, total sulfur content, and total moisture content of the coal.

[0029] Preferably, in the above-mentioned real-time coal quality tracking and control system for conveyor belt coal flow, the coal quality analysis module includes:

[0030] The data receiving unit, connected to the second coal quality testing unit, is used to acquire the total calorific value, total ash content, total sulfur content, and total moisture content of coal at the same position on the conveyor belt at various times, acquire the total ash content standard, total calorific value standard, total moisture content standard, and total sulfur content standard from the blending data, and classify and store them in the database according to the detection time and data type.

[0031] The difference calculation unit, which is connected to the data receiving unit, is used to sequentially calculate the ash difference value between the total ash content standard and the total ash content of coal, the calorific value difference value between the total calorific value standard and the total calorific value of coal, the sulfur difference value between the total sulfur content standard and the total sulfur content of coal, and the moisture difference value between the total moisture content standard and the total moisture content of coal.

[0032] An opening conversion unit is connected to the difference calculation unit; the opening conversion unit generates a coal conveying scheme based on the difference values ​​of each parameter and the preset coal quality standard, and converts the coal conveying scheme into opening information corresponding to the opening control unit;

[0033] The second instruction generation unit is connected to the opening conversion unit and the opening control unit, and is used to convert the opening information into the second adjustment instruction and send it to the opening control unit.

[0034] Preferably, in the above-mentioned real-time coal quality tracking control system for conveyor belt coal flow, the calculation process of the difference calculation unit includes:

[0035] Let An be the total calorific value of coal detected at time n, Bn be the total ash content of coal, Cn be the total sulfur content of coal, and Dn be the total moisture content of coal; the standard for total calorific value in the blending data is preset to A0, the standard for total ash content is B0, the standard for total sulfur content is C0, and the standard for total moisture content is D0.

[0036] The difference in calorific value at time n is δAn = A0 - An;

[0037] The ash difference value at time n is δBn=B0-Bn;

[0038] The sulfur content difference at time n is δCn=C0-Cn;

[0039] The moisture difference at time n is δDn=D0-Dn;

[0040] Several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​were obtained from the first time point to the nth time point through calculation.

[0041] Preferably, in the above-mentioned real-time coal quality tracking control system for conveyor belt coal flow, the conversion process of the opening degree conversion unit includes:

[0042] Step 1: Obtain several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​from the first time point to the nth time point;

[0043] Step 2: Generate the relationship between the calorific value standard At, ash content standard Bt, sulfur content standard Ct, and moisture content standard Dt of various coals per unit mass and the various difference values; calculate the coal demand schemes for various coal qualities; converge the schemes; and select the optimal coal demand as the adjustment scheme.

[0044] Quality Scheme 1 M1 = δAn / At, where M1 is the weight value of each type of coal added separately;

[0045] Quality Scheme 2 M2 = δBn / Bt, where M2 is the weight value of each type of coal added separately;

[0046] Quality Scheme 3 M3 = δCn / Ct, where M3 is the weight value of each type of coal added separately;

[0047] Quality Scheme 4 M4 = δFn / Dt, where M4 is the weight value of each type of coal added separately;

[0048] Step 3: Summarize Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and obtain the type of coal with the most similar weight value among Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and its weight value as the adjustment scheme.

[0049] Step 4: Generate the opening information of the corresponding opening control unit based on the opening coefficient and adjustment scheme of the coal feeder valve corresponding to this type of coal.

[0050] Preferably, in the above-mentioned real-time coal quality tracking control system for conveyor belt coal flow, the coal flow tracking module includes:

[0051] A flow rate detection unit, which is connected to the belt, is used to acquire the flow rate data of the belt in real time;

[0052] A weight detection unit, which is connected to the belt, is used to acquire data on the weight of coal carried by the belt in real time.

[0053] A coal flow analysis unit is connected to the flow velocity detection unit, the weight detection unit, and the coal blending preset unit. The coal flow analysis unit calculates the total amount of coal involved in combustion in real time based on the flow velocity data and the coal weight data, compares it with the total amount of coal used in the blending data, and generates a comparison result.

[0054] The instruction generation unit three is connected to the coal flow analysis unit and the opening control unit. It is used to obtain the comparison results and generate the adjustment instruction three that the opening control unit can recognize, and send it to the opening control unit to control the opening of the valve.

[0055] As can be seen from the above technical solution, the beneficial effects of this application compared with the prior art are as follows:

[0056] This invention provides a real-time coal quality tracking and control system for conveyor coal flow, including a digital coal bunker module to obtain coal quality information, a blending setting module to generate adjustment commands based on preset data, and a coal feeder adjustment module to adjust valve openings according to the commands. A coal quality tracking module obtains the conveyed coal quality data, a coal quality analysis module analyzes the data and generates a second adjustment command, and a coal flow tracking module detects the flow rate and load weight and generates a third adjustment command. These adjustment commands are fed back to the coal feeder adjustment module, achieving real-time tracking and control of coal quality to improve combustion efficiency and stability. This system enables real-time adjustment of coal quality and coal flow, ensuring consistency between coal quality and preset blending data, improving combustion efficiency, and reducing environmental pollution. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0058] Figure 1 This is a system flowchart of the present invention. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] In one embodiment, see Figure 1 A real-time coal quality tracking and control system for conveyor belt coal flow, comprising:

[0064] The digital coal bunker module is used to acquire coal quality information of coal piles at various locations within the coal bunker.

[0065] The blending setting module, which is connected to the digital coal bunker module, is used to generate corresponding adjustment commands based on preset blending data.

[0066] The coal feeder adjustment module, which is connected to the blending setting module, is used to receive adjustment commands and adjust the valve opening so that coal of different qualities falls onto the conveyor belt.

[0067] The coal quality tracking module is installed above the conveyor belt to acquire the coal quality data at the same position on the conveyor belt at various times.

[0068] The coal quality analysis module, which is connected to the coal quality tracking module and the coal feeder adjustment module, is used to analyze the transported coal quality data, calculate the difference between the preset blending data and the transported coal quality data, generate the corresponding adjustment command based on the analysis results, and send it to the coal feeder adjustment module.

[0069] The coal flow tracking module is installed on the conveyor belt and connected to the coal feeder adjustment module. It is used to detect the flow rate and load of the conveyor belt, analyze and calculate the difference between the total amount of coal involved in combustion and the preset blending data, generate the corresponding adjustment command based on the analysis results, and send it to the coal feeder adjustment module.

[0070] The principle of the above embodiment is as follows: Digital coal bunker module: acquires coal quality information such as ash content, sulfur content, and calorific value of coal at various locations within the coal bunker through sensors; Blending setting module: connected to the digital coal bunker module, generates corresponding adjustment commands based on preset blending data. These adjustment commands are used to adjust the valve opening of the coal feeder to allow coal of different qualities to be placed on the conveyor belt; Coal feeder adjustment module: connected to the blending setting module, receives adjustment commands, and adjusts the valve opening of the coal feeder accordingly to ensure that coal of different qualities falls onto the conveyor belt; Coal quality tracking module: located above the conveyor belt, used to acquire real-time coal quality data at the same location on the conveyor belt at various times, such as ash content and sulfur content; Coal quality analysis module: connected to the coal quality tracking module and the coal feeder adjustment module, analyzes the transported coal quality data. It calculates the difference between the preset blending data and the actual transported coal quality data, and generates corresponding adjustment commands based on the analysis results, sending them to the coal feeder adjustment module; Coal flow tracking module: located on the conveyor belt and connected to the coal feeder adjustment module. It detects the conveyor belt's flow rate and load, and analyzes the difference between the total amount of coal involved in combustion and the preset blending data. Based on the analysis results, it generates a corresponding adjustment command and sends it to the coal feeder adjustment module.

[0071] The beneficial effects of the above embodiments are: Real-time monitoring and tracking: The system can acquire coal quality information of coal piles at various locations in the coal bunker in real time, as well as coal quality data transported on the conveyor belt, and perform analysis and calculation; Precise control: Through analysis and calculation, the system can generate adjustment commands to accurately adjust the opening of the coal feeder valves to ensure that coal of different qualities falls on the conveyor belt and achieves the required blending ratio; Improved combustion efficiency: By tracking the flow rate and load weight of the coal flow in real time, the system can analyze the difference between the amount of coal burned and the preset blending data, and generate corresponding adjustment commands to better control the amount of coal burned and improve combustion efficiency; Reduced environmental pollution: By precisely controlling the coal quality, the system can achieve more refined coal quality blending and blending control, reducing the amount of harmful components in the coal (such as sulfur) entering the atmosphere, thereby reducing environmental pollution.

[0072] To optimize the above technical solution, please refer to Figure 1 A real-time coal quality tracking and control system for conveyor belt coal flow, the digital coal bunker module includes:

[0073] The coal pile division unit is set up inside the coal bunker. The coal pile division unit is pre-set with coal quality standards and the coal bunker area is divided according to the pre-set coal quality standards.

[0074] The coal storage unit, which is connected to the coal pile division unit, is used to pile coal corresponding to the preset coal quality standard into the corresponding coal bunker area to form coal piles of different coal qualities.

[0075] The first coal quality testing unit consists of several units, each located at a coal pile in a different coal bunker area, and is used to test the coal quality information of each coal pile.

[0076] It should be noted that the preset coal quality standards include ash content standards, calorific value standards, moisture standards, and sulfur content standards for various unit masses of coal. The preferred coal quality testing unit is an online X-ray coal quality analyzer, a current technological means used to detect various coal quality data, including the ash content, calorific value, moisture, and sulfur content standards described above. The beneficial effects of this embodiment are precise coal quality control: through the coal pile division unit and the coal storage unit, coal piles of different qualities are placed in specific areas, ensuring the separation and classification of coal quality, thereby achieving precise control over different coal qualities; coal quality data acquisition: through the coal quality testing unit, coal quality information for each coal pile is acquired, including ash content, calorific value, moisture, and sulfur content. This data is crucial for subsequent coal quality analysis and adjustment; coal quality standardization: the preset coal quality standards include ash content, calorific value, moisture, and sulfur content standards for various unit masses of coal. Through the digital coal storage module, coal piles can be divided and managed according to these standards, improving the standardization of coal quality.

[0077] To optimize the above technical solution, please refer to Figure 1A real-time coal quality tracking and control system for conveyor belt coal flow, the blending setting module includes:

[0078] The coal blending preset unit generates blending data based on the coal quality and quantity data required for the current boiler to participate in combustion.

[0079] The blending data includes standards for total ash content, total calorific value, total moisture content, total sulfur content, and total coal consumption.

[0080] The instruction generation unit 1 is connected to the coal blending preset unit and is used to convert the current blending data into an adjustment instruction 1 that can be recognized by the coal feeder adjustment module.

[0081] It should be noted that this embodiment allows for flexible control of the combustion process: the coal blending preset unit generates blending data based on the current boiler requirements and coal quality data, allowing for flexible adjustment of the combustion ratio of different coal qualities; this helps optimize the combustion process and improve energy utilization efficiency; the coal quality ratio can be set as needed: by setting standards for total ash content, total calorific value, total moisture, total sulfur content, and total coal consumption, the required coal blending ratio can be set as needed. This helps meet the boiler's requirements for different coal qualities, improving combustion efficiency and stability; intelligent adjustment command generation: the command generation unit converts the current blending data into adjustment command one for the coal feeder adjustment module, ensuring the achievement of the required coal blending ratio; this allows for intelligent control of the coal feeder valve opening, achieving precise coal quality adjustment.

[0082] To optimize the above technical solution, please refer to Figure 1 A real-time coal quality tracking and control system for belt-driven coal flow, comprising a coal feeder adjustment module including:

[0083] Valves are installed at the outlet of each coal feeder to control the amount of coal conveyed for various types of coal.

[0084] The instruction receiving unit, which is connected to the instruction generating unit, is used to receive adjustment instructions;

[0085] The valve opening control unit is connected to the command receiving unit and the valve. It is used to receive adjustment commands and control the valve opening according to the adjustment commands.

[0086] It should be noted that the control process of the valve opening control unit is based on existing technology. When the coal feeder delivers coal, multiple valves are used, each corresponding to a different type of coal. This embodiment can control the coal delivery rate: through the valve settings, the coal feeder adjustment module can control the delivery rate of various coal types. This allows for adjustment of the supply of different coal types as needed to meet the boiler combustion requirements. Intelligent adjustment command reception: The command receiving unit is connected to the command generation unit to receive generated adjustment commands. By receiving these commands, the coal feeder adjustment module can understand the required coal blending ratio and make corresponding adjustments accordingly. Valve opening control: The opening control unit is connected to the command receiving unit and the valves, receiving adjustment commands and controlling the valve opening according to the commands. By adjusting the valve opening, precise control of the supply of different coal types can be achieved to realize the required coal blending ratio.

[0087] To optimize the above technical solution, please refer to Figure 1 A real-time coal quality tracking and control system for conveyor belt coal flow, the coal quality tracking module comprising:

[0088] The second coal quality detection unit is fixedly installed above any position on the conveyor belt and acquires the coal quality data of the conveyed coal that falls on the conveyor belt by emitting rays.

[0089] The cycle control unit is connected to the second coal quality detection unit; the cycle control unit has a preset detection cycle and controls the irradiation frequency of the second coal quality detection unit according to the detection cycle.

[0090] It should be noted that the coal quality data being transported includes the total calorific value, total ash content, total sulfur content, and total moisture content of the coal; the second coal quality testing unit uses the same X-ray online coal quality analyzer as the first coal quality testing unit; a periodic control testing method is adopted to ensure that data is not transmitted too frequently and to avoid data congestion; the period is set by personnel based on factors such as belt length; this embodiment realizes real-time tracking of coal quality, increasing the accuracy and efficiency of the blending process.

[0091] To optimize the above technical solution, please refer to Figure 1 A real-time coal quality tracking and control system for conveyor belt coal flow, the coal quality analysis module includes:

[0092] The data receiving unit, connected to the second coal quality testing unit, is used to acquire the total calorific value, total ash content, total sulfur content, and total moisture content of coal at the same location on the conveyor belt at various times, and to acquire the total ash content standard, total calorific value standard, total moisture content standard, and total sulfur content standard from the blending data; and to classify and store them in the database according to the detection time and data type.

[0093] The difference calculation unit, which is connected to the data receiving unit, is used to sequentially calculate the ash difference value between the total ash content standard and the total ash content of coal, the calorific value difference value between the total calorific value standard and the total calorific value of coal, the sulfur difference value between the total sulfur content standard and the total sulfur content of coal, and the moisture difference value between the total moisture content standard and the total moisture content of coal.

[0094] The opening conversion unit is connected to the difference calculation unit; the opening conversion unit generates a coal conveying scheme based on the difference values ​​of various parameters and the preset coal quality standard, and converts the coal conveying scheme into the opening information of the corresponding opening control unit;

[0095] The second instruction generation unit is connected to the opening conversion unit and the opening control unit. It is used to convert the opening information into the second adjustment instruction and send it to the opening control unit.

[0096] It should be noted that the calculation process of the difference calculation unit includes:

[0097] Let An be the total calorific value of coal detected at time n, Bn be the total ash content of coal, Cn be the total sulfur content of coal, and Dn be the total moisture content of coal; the standard for total calorific value in the blending data is preset to A0, the standard for total ash content is B0, the standard for total sulfur content is C0, and the standard for total moisture content is D0.

[0098] The difference in calorific value at time n is δAn = A0 - An;

[0099] The ash difference value at time n is δBn=B0-Bn;

[0100] The sulfur content difference at time n is δCn=C0-Cn;

[0101] The moisture difference at time n is δDn=D0-Dn;

[0102] Several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​were obtained from the first time point to the nth time point through calculation;

[0103] The conversion process of the opening conversion unit includes:

[0104] Step 1: Obtain several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​from the first time point to the nth time point;

[0105] Step 2: Generate the relationship between the calorific value standard At, ash content standard Bt, sulfur content standard Ct, and moisture content standard Dt of various coals per unit mass and the various difference values; calculate the coal demand schemes for various coal qualities; converge the schemes; and select the optimal coal demand as the adjustment scheme.

[0106] Quality Scheme 1 M1 = δAn / At, where M1 is the weight value of each type of coal added separately;

[0107] Quality Scheme 2 M2 = δBn / Bt, where M2 is the weight value of each type of coal added separately;

[0108] Quality Scheme 3 M3 = δCn / Ct, where M3 is the weight value of each type of coal added separately;

[0109] Quality Scheme 4 M4 = δFn / Dt, where M4 is the weight value of each type of coal added separately;

[0110] Step 3: Summarize Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and obtain the type of coal with the most similar weight value among Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and its weight value as the adjustment scheme.

[0111] Step four: Based on the valve opening coefficient and adjustment scheme of the coal feeder corresponding to this type of coal, generate the opening information of the corresponding opening control unit; this embodiment realizes closed-loop control of coal quality tracking, increasing conveying efficiency and blending accuracy.

[0112] To optimize the above technical solution, please refer to Figure 1 A real-time coal quality tracking and control system for conveyor belt coal flow, the coal flow tracking module comprising:

[0113] A flow rate detection unit, which is connected to the belt, is used to acquire the belt's flow rate data in real time;

[0114] The weight detection unit, which is connected to the belt, is used to acquire the weight data of the coal carried by the belt in real time;

[0115] The coal flow analysis unit is connected to the flow velocity detection unit, the weight detection unit, and the coal blending preset unit. The coal flow analysis unit calculates the total amount of coal involved in combustion in real time based on the flow velocity data and the coal weight data, compares it with the total amount of coal used in the blending data, and generates a comparison result.

[0116] The instruction generation unit three is connected to the coal flow analysis unit and the opening control unit. It is used to obtain comparison results and generate adjustment instruction three that the opening control unit can recognize, and send it to the opening control unit to control the valve opening.

[0117] It should be noted that calculating the total amount of coal involved in combustion in real time based on flow rate data and coal weight data is an existing technical method. By adjusting the opening of the control valve by command three, when the total amount of coal is equal to or exceeds the total amount of coal used, the valve opening is controlled to be 0, that is, the valve is controlled to be closed. This embodiment realizes real-time tracking control of the coal flow of the conveyor belt, which together with the coal quality tracking control completes the coal blending and combustion process.

[0118] It should be noted that the system provided in the above embodiments is only illustrated by the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of the present invention can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of the present invention are only for distinguishing the various modules or steps and are not considered as an improper limitation of the present invention.

[0119] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0120] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0121] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this invention is also intended to include these modifications and variations in the above description of the disclosed embodiments, enabling those skilled in the art to implement or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A real-time coal quality tracking control system for a belt coal flow, characterized by, include: The digital coal bunker module is used to acquire coal quality information of coal piles at various locations within the coal bunker. The blending setting module, which is connected to the digital coal bunker module, is used to generate corresponding adjustment instructions based on preset blending data. The coal feeder adjustment module is connected to the blending setting module and is used to receive adjustment commands and adjust the valve opening to allow coal of different qualities to fall onto the conveyor belt. A coal quality tracking module is installed above the conveyor belt to acquire coal quality data at the same position on the conveyor belt at various times. The coal quality analysis module, which is connected to the coal quality tracking module and the coal feeder adjustment module, is used to analyze the transported coal quality data, calculate the difference between the preset blending data and the transported coal quality data, generate the corresponding adjustment command two according to the analysis results, and send it to the coal feeder adjustment module. A coal flow tracking module is installed on the belt and connected to the coal feeder adjustment module. It is used to detect the flow rate and load of the belt, analyze and calculate the difference between the total amount of coal participating in combustion and the preset blending data, generate corresponding adjustment command three based on the analysis results, and send it to the coal feeder adjustment module. The coal feeder adjustment module includes: Valves are installed at the outlet of each coal feeder to control the amount of coal conveyed for various types of coal. The instruction receiving unit, which is connected to the instruction generating unit, is used to receive adjustment instructions; An opening control unit, which is connected to the command receiving unit and the valve, is used to receive adjustment commands and control the opening of the valve according to the adjustment commands; The coal quality analysis module includes: The data receiving unit, connected to the second coal quality testing unit, is used to acquire the total calorific value, total ash content, total sulfur content, and total moisture content of coal at the same location on the conveyor belt at various times, acquire the total ash content standard, total calorific value standard, total moisture content standard, and total sulfur content standard from the blending data, and classify and store them in the database according to the detection time and data type. The difference calculation unit, which is connected to the data receiving unit, is used to sequentially calculate the ash difference value between the total ash content standard and the total ash content of coal, the calorific value difference value between the total calorific value standard and the total calorific value of coal, the sulfur difference value between the total sulfur content standard and the total sulfur content of coal, and the moisture difference value between the total moisture content standard and the total moisture content of coal. An opening conversion unit is connected to the difference calculation unit; the opening conversion unit generates a coal conveying scheme based on the difference values ​​of various parameters and the preset coal quality standard, and converts the coal conveying scheme into the opening information of the corresponding opening control unit; The second instruction generation unit is connected to the opening conversion unit and the opening control unit, and is used to convert the opening information into the second adjustment instruction and send it to the opening control unit.

2. The real-time coal quality tracking control system for belt coal flow according to claim 1, characterized in that, The digital coal bunker module includes: A coal pile division unit is set up inside the coal bunker. The coal pile division unit is preset with coal quality standards and divides the coal bunker area according to the preset coal quality standards. The preset coal quality standards include ash content standards, calorific value standards, moisture standards, and sulfur content standards for various types of coal per unit mass. A coal storage unit, which is connected to the coal pile division unit, is used to pile coal corresponding to a preset coal quality standard into the corresponding coal bunker area to form coal piles of different coal qualities. The first coal quality testing unit consists of several units, each located at a coal pile in a different coal bunker area, and is used to test the coal quality information of each coal pile.

3. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 2, characterized in that, The co-firing setting module includes: The coal blending preset unit generates blending data based on the coal quality and quantity data required for the current boiler to participate in combustion. The blending data includes total ash content standards, total calorific value standards, total moisture content standards, total sulfur content standards, and total coal consumption. The instruction generation unit 1 is connected to the coal blending preset unit and is used to convert the current blending data into an adjustment instruction 1 that can be recognized by the coal feeder adjustment module.

4. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 1, characterized in that, The coal quality tracking module includes: The second coal quality detection unit is fixedly installed above any position on the conveyor belt and acquires the coal quality data of the conveyed coal that falls on the conveyor belt by emitting rays. A periodic control unit is connected to the second coal quality detection unit; the periodic control unit has a preset detection period and controls the irradiation frequency of the second coal quality detection unit according to the detection period.

5. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 4, characterized in that, The coal quality data to be transported includes the total calorific value, total ash content, total sulfur content, and total moisture content of the coal.

6. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 1, characterized in that, The calculation process of the difference calculation unit includes: Let An be the total calorific value of coal detected at time n, Bn be the total ash content of coal, Cn be the total sulfur content of coal, and Dn be the total moisture content of coal; the standard for total calorific value in the blending data is preset to A0, the standard for total ash content is B0, the standard for total sulfur content is C0, and the standard for total moisture content is D0. The difference in calorific value at time n is δAn = A0 - An; The ash difference value at time n is δBn = B0 - Bn; The sulfur content difference at time n is δCn = C0 - Cn; The moisture difference at time n is δDn = D0 - Dn; Several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​were obtained from the first time point to the nth time point through calculation.

7. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 6, characterized in that, The conversion process of the opening conversion unit includes: Step 1: Obtain several calorific value difference values, ash content difference values, sulfur content difference values, and moisture content difference values ​​from the first time point to the nth time point; Step 2: Generate the relationship between the calorific value standard At, ash content standard Bt, sulfur content standard Ct, and moisture content standard Dt of various coals per unit mass and the various difference values; calculate the coal demand schemes for various coal qualities; converge the schemes; and select the optimal coal demand as the adjustment scheme. Quality Scheme 1 M1=δAn / At, where M1 is the weight value of each type of coal added separately; Quality Scheme 2: M2 = δBn / Bt, where M2 is the weight value of each type of coal added separately; Quality Scheme 3 M3 = δCn / Ct, where M3 is the weight value of each type of coal added separately; Quality Scheme 4 M4 = δDn / Dt, where M4 is the weight value of each type of coal added separately; Step 3: Summarize Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and obtain the type of coal with the most similar weight value among Quality Scheme 1 M1, Quality Scheme 2 M2, Quality Scheme 3 M3, and Quality Scheme 4 M4, and its weight value as the adjustment scheme. Step 4: Generate the opening information of the corresponding opening control unit based on the opening coefficient and adjustment scheme of the coal feeder valve corresponding to this type of coal.

8. The real-time coal quality tracking and control system for conveyor belt coal flow according to claim 7, characterized in that, The coal flow tracking module includes: A flow rate detection unit, which is connected to the belt, is used to acquire the flow rate data of the belt in real time; A weight detection unit, which is connected to the belt, is used to acquire data on the weight of coal carried by the belt in real time. The coal flow analysis unit is connected to the flow velocity detection unit, the weight detection unit, and the coal blending preset unit. The coal flow analysis unit calculates the total amount of coal involved in combustion in real time based on the flow velocity data and the coal weight data, compares it with the total amount of coal used in the blending data, and generates a comparison result. The instruction generation unit three is connected to the coal flow analysis unit and the opening control unit. It is used to obtain the comparison results and generate the adjustment instruction three that the opening control unit can recognize, and send it to the opening control unit to control the opening of the valve.

Images