A silo coal blending and combustion control system

By designing a silo coal mixing control system, dynamic tracking and distributing coal, the combustion efficiency problem of thermal power plants due to unstable coal quality is solved, and more efficient combustion control is achieved.

CN117167771BActive Publication Date: 2025-02-25HUANENG WUHAN POWER GENERATION CO LTD
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Patent Information

Application Number
CN202310921408.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-25
Publication Date
2025-02-25
Estimated Expiration
2043-07-25

AI Technical Summary

Technical Problem

Due to the unstable coal quality of coal sources in thermal power plants, the combustion efficiency is low, and the existing technology transformation equipment cannot fundamentally solve the coal quality problem.

Method used

Design a silo coal mixing and combustion control system, through the combustion prediction module, feeding module, filler supplement analysis module and coal mixing module, the amount of different types of coal is preset, the combustion process is dynamically tracked, and coal is replenished in a timely manner to achieve combustion control.

Benefits of technology

By effectively distributing coal, precise control of the combustion process is achieved, combustion efficiency is improved, and the problem of unstable coal quality is solved.

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Abstract

The present invention provides a silo coal blending and combustion control system. Belonging to the field of blending and combustion control, the system includes: a combustion prediction module, which is used to establish a silo combustion prediction model based on the coal combustion characteristics of different types of coal, and predict the coal type ratio required for the current combustion demand and the first total amount of each type of coal in the coal type ratio; according to the coal type ratio, the corresponding first total amount of coal is fed to the silo; the combustion process of different types of coal in the silo is dynamically tracked to determine the combustion conditions of different types of coal, and the filling supplement analysis of the different types of remaining coal after the current combustion is performed in combination with the demand ratio; based on the filling supplement analysis results, the supplement amount of the corresponding type of coal is determined, and coal is allocated based on the silo to achieve blending and combustion control. By presetting the amount of different types of coal, tracking the combustion process and timely filling supplement, effective coal allocation is achieved, blending and combustion control is achieved, and combustion efficiency is guaranteed.
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Description

Technical Field

[0001] The invention relates to the technical field of blending and burning control technology, and in particular to a silo coal blending and burning control system. Background Art

[0002] In recent years, although there are many thermal power plants, especially those in the southern inland provinces, due to the unstable coal source and quality, they hope to achieve stability by transforming the boiler equipment. For example, improving the internal structure of the combustion equipment, adopting new burners, etc. Although certain results have been achieved, the problem has not been fundamentally solved. That is, even if the equipment is changed to improve the combustion efficiency, the problem of coal quality has not been solved.

[0003] Therefore, the present invention proposes a silo coal blending and combustion control system based on combustion control itself. Summary of the invention

[0004] The present invention provides a silo coal blending and combustion control system, which is used to achieve effective coal allocation, blending and combustion control, and ensure combustion efficiency by presetting the amount of different types of coal, tracking the combustion process, and timely filling.

[0005] The present invention provides a silo coal blending and combustion control system, comprising:

[0006] The combustion prediction module is used to establish a silo combustion prediction model based on the coal combustion characteristics of different types of coal, and predict the coal type ratio required for the current combustion demand and the first total amount of each type of coal in the coal type ratio;

[0007] A feeding module, used for feeding a first total amount of coal to a silo according to the coal type ratio;

[0008] The filling supplement analysis module is used to dynamically track the combustion process of different types of coal in the silo, determine the combustion conditions of different types of coal, and perform filling supplement analysis on the remaining coal of different types after the current combustion in combination with the demand ratio;

[0009] The coal blending module is used to determine the replenishment amount of the corresponding type of coal based on the filler replenishment analysis results, and to blend coal based on the silo to achieve blending control.

[0010] In a possible implementation, the combustion prediction module includes:

[0011] A model building unit, used to build a silo combustion prediction model based on the coal combustion characteristics of different types of coal;

[0012] An extraction unit, used for extracting a predetermined total required calorific value Q in the current combustion demand;

[0013] A matching unit is used to match the preset calorific value associated with each type of coal to be analyzed in the coal-calorific value table and construct a preset calorific value set And the combustion temperature set ,in, Indicates the preset calorific value corresponding to the i-th coal type, and the value range of i is [1,n]; Indicates the maximum temperature corresponding to the i-th coal type; Indicates the combustion starting point temperature corresponding to the i-th coal type;

[0014] Calculation unit, used to predict the coal type ratio required for current combustion demand based on the silo combustion prediction model ;

[0015] ;

[0016] in, Indicates the preset standard coal equivalent, unit J / t; Indicates the minimum value among the preset calorific values ​​of all coal types; Indicates the maximum value of the preset calorific value among all coal types; It represents the mean value of the preset calorific value set of all coal types; It represents the total amount of coal blending for the ith coal type; represents the stable temperature corresponding to the i-th coal type; Indicates the proportion corresponding to the i-th coal type;

[0017] According to the coal ratio, the total required calorific value Q, the total amount of coal , determine the first total amount of each type of coal.

[0018] In a possible implementation, the feeding module includes:

[0019] A coal bunker belt conveyor is used to convey a first total amount of various coals from the coal yard to a top material machine of a corresponding silo;

[0020] The top material machine is used to feed the corresponding coal into the silo where the coal is placed based on the feeder.

[0021] In a possible implementation, the feeder includes:

[0022] A weight sensor provided on the feeder, for detecting the weight of the coal on the feeder belt in real time;

[0023] a controller for detecting a conveying speed of a feeder belt based on a speed sensor provided at the feeder if the weight of the coal is greater than a preset weight, and controlling the speed of the feeder belt to decrease according to the excess weight;

[0024] If the weight of the coal is less than a preset weight, a speed sensor provided at the feeder is used to detect the conveying speed of the feeder belt, and the speed of the feeder belt is controlled to increase according to the lack of weight;

[0025] Wherein, the controller is connected with the weight sensor, the speed sensor and the feeder belt drive motor.

[0026] In a possible implementation, the filler supplement analysis module includes:

[0027] A camera device for collecting images of the combustion flame during the combustion process in chronological order;

[0028] An image processing unit, used to pre-process the collected combustion flame images and extract the combustion features in each combustion flame image;

[0029] An identification and labeling unit, used for identifying and first labeling the combustion features of different images based on the image machine learning model;

[0030] The environmental detection unit is used to detect the combustion gas and the concentration of different combustion gases in the silo, and make a second mark. At the same time, it detects the pressure and temperature in the silo and makes a third mark.

[0031] The determination unit is used to determine the combustion situation inside the silo according to the first marking result, the second marking result and the third marking result.

[0032] In a possible implementation, the filler supplement analysis module further includes:

[0033] A weight detection unit, used to detect a first total weight of the combustion material in the silo and a remaining weight of different types of coal remaining in the feeding module;

[0034] The demand difference unit is used to determine the replenishment amount of the remaining weight of different types of coal according to the demand ratio;

[0035] The quantity optimization unit is used to optimize the corresponding supplementary quantity based on the combustion conditions of different types of coal to obtain the filling quantity of the corresponding type of coal.

[0036] In a possible implementation manner, the determining unit includes:

[0037] A gas set determination unit is used to determine the historical data set of different combustion gases based on the second annotation result. ,in, It represents the gas concentration of the corresponding combustion gas at time r01, and the value range of r01 is [1, r];

[0038] A pressure and temperature set determination unit, used to determine a historical pressure data set based on the third annotation result And the historical temperature data set is ,in, represents the pressure at time r02, and the value range of r01 is [1,t]; represents the temperature at time r03, and the value range of r03 is [1,y];

[0039] Alignment processing unit, used to align different data sets to obtain standardized data sets of different combustion gases , Pressure Standardized Dataset , Temperature mean normalized data set , and construct the first matrix K, where m is the standardized standard time accuracy range;

[0040] ;

[0041] in, represents the gas combustion concentration of the combustion gas j02 at time j01, the value range of j01 is [1, m]; the value range of j02 is [1, k2]; represents the pressure at time j01; represents the temperature at time j01;

[0042] A factor acquisition unit, used for comparing the first matrix with a corresponding standard value to acquire an abnormal factor;

[0043] ;

[0044] in, Indicates based on expectations; represents the value of the j01th element in the j03th row vector; Indicates the number of elements in the j03th row vector; represents the standard value of the element corresponding to the j03th row vector; represents the outlier factor of the j03th row vector;

[0045] The prompt unit is used to compare all abnormal factors and abnormal factor types with the factor-combustion database, determine the factors of insufficient combustion, and issue early warning prompts.

[0046] In a possible implementation, the coal allocation module includes:

[0047] Synchronous unit, used to obtain the filler supplement analysis results and record the supplement amount of the corresponding type of coal;

[0048] A quantity determination unit is used to analyze the supplementary quantities of different types of coal based on the silo combustion prediction model, determine the current required coal blending quantity, and generate a control instruction;

[0049] The blending control unit is used to blend different types of coal to achieve blending control when the silo receives the control instruction.

[0050] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0051] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0053] Figure 1 It is a structural diagram of a silo coal blending and combustion control system in an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0055] Embodiment 1:

[0056] The embodiment of the present invention provides a silo coal blending and combustion control system, such as Figure 1 As shown, it is characterized by comprising:

[0057] The combustion prediction module is used to establish a silo combustion prediction model based on the coal combustion characteristics of different types of coal, and predict the coal type ratio required for the current combustion demand and the first total amount of each type of coal in the coal type ratio;

[0058] A feeding module, used for feeding a first total amount of coal to a silo according to the coal type ratio;

[0059] The filling supplement analysis module is used to dynamically track the combustion process of different types of coal in the silo, determine the combustion conditions of different types of coal, and perform filling supplement analysis on the remaining coal of different types after the current combustion in combination with the demand ratio;

[0060] The coal blending module is used to determine the replenishment amount of the corresponding type of coal based on the filler replenishment analysis results, and to blend coal based on the silo to achieve blending control.

[0061] In this embodiment, the coal type refers to different types of coal, including: coking coal, fat coal, anthracite, lean coal, weakly caking coal, gas coal, long flame coal, lean coal, etc.;

[0062] In this embodiment, different types of coal have their own different coal combustion characteristics, such as different calorific value, volatility, coking property, ash melting point, ash content, moisture content, and sulfur content of different types of coal, resulting in different heat generated by the same quality;

[0063] In this embodiment, the current combustion demand is the total combustion amount and total heat demand set in advance according to the current electricity demand;

[0064] In this embodiment, the coal type ratio refers to the proportion of all coal types in the total amount of mixed coal that needs to be transported to the boiler for combustion;

[0065] In this embodiment, the first total amount refers to the total amount of the current coal type obtained according to the coal type ratio and the total amount of mixed coal;

[0066] In this embodiment, the silo combustion prediction model is trained based on a large number of samples such as the combustion characteristics of different types of coal, combustion requirements, matching ratios and quantities, and therefore, the demand-related ratios and corresponding quantities can be directly obtained based on the model.

[0067] In this embodiment, the filler refers to the amount of coal to be replenished next time after the boiler is burned based on the current remaining coal and the new total amount of combustion demand;

[0068] In this embodiment, the remaining coal refers to the total amount of each type of coal that needs to be replenished for the next combustion based on the filler amount. For example, the original amount of coal 1 required is 1 ton, but the current remaining amount is 0.3 tons. At this time, 0.7 tons needs to be replenished.

[0069] The ratio requirement refers to: Coal 1: Coal 2: Coal 3 = 0.4: 0.2: 0.4. During the replenishment process, the amount required is determined according to this ratio.

[0070] In this embodiment, the combustion condition refers to the combustion efficiency of different coals, as well as information on various gases generated during the combustion of the silo, such as carbon dioxide, residual oxygen, etc.

[0071] The beneficial effect of the above technical solution is: by presetting the amount of different types of coal, tracking the combustion process and timely filling, effective allocation of coal is achieved, blending control is achieved, and combustion efficiency is guaranteed.

[0072] Embodiment 2:

[0073] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, and the combustion prediction module includes:

[0074] A model building unit, used to build a silo combustion prediction model based on the coal combustion characteristics of different types of coal;

[0075] An extraction unit, used for extracting a predetermined total required calorific value Q in the current combustion demand;

[0076] A matching unit is used to match the preset calorific value associated with each type of coal to be analyzed in the coal-calorific value table and construct a preset calorific value set And the combustion temperature set ,in, Indicates the preset calorific value corresponding to the i-th coal type, and the value range of i is [1,n]; Indicates the maximum temperature corresponding to the i-th coal type; Indicates the combustion starting point temperature corresponding to the i-th coal type;

[0077] Calculation unit, used to predict the coal type ratio required for current combustion demand based on the silo combustion prediction model ;

[0078] ;

[0079] in, Indicates the preset standard coal equivalent, unit J / t; Indicates the minimum value among the preset calorific values ​​of all coal types; Indicates the maximum value of the preset calorific value among all coal types; It represents the mean value of the preset calorific value set of all coal types; It represents the total amount of coal blending for the ith coal type; represents the stable temperature corresponding to the i-th coal type; Indicates the proportion corresponding to the i-th coal type;

[0080] According to the coal ratio, the total required calorific value Q, the total amount of coal , determine the first total amount of each type of coal.

[0081] In this embodiment, the predetermined total required calorific value is the theoretical heat generated by the combustion of the total amount of the current mixed coal;

[0082] In this embodiment, the coal-calorific value table is a table of the heat generated by the combustion of different types of coal per unit weight per unit temperature and the corresponding coal types, generated based on expert analysis and data from some professional fields;

[0083] In this embodiment, the preset calorific value refers to the calorific value of the current coal type based on the coal-calorific value table;

[0084] In this embodiment, the combustion starting point temperature refers to the initial temperature of the current coal type combustion;

[0085] In this embodiment, the standard coal equivalent is the calorific value of one ton of standard coal as specified in the regulations, in J / t;

[0086] In this embodiment, the first total amount is the product of the total predetermined amount and the corresponding ratio, that is: .

[0087] The beneficial effect of the above technical solution is that the silo combustion prediction model provides accurate evaluation and prediction of the proportion of each coal type in coal combustion based on the combustion prediction model and algorithm analysis, and provides a basis for subsequent combustion efficiency.

[0088] Embodiment 3:

[0089] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, in which the feeding module includes:

[0090] A coal bunker belt conveyor is used to convey a first total amount of various coals from the coal yard to a top material machine of a corresponding silo;

[0091] The top material machine is used to feed the corresponding coal into the silo where the coal is placed based on the feeder.

[0092] In this embodiment, the coal bunker belt conveyor is a device that uses belt transportation to transport coal to the coal storage silo. It usually consists of the following main parts: a driving device, a conveyor belt, a supporting structure, and a transfer device;

[0093] In this embodiment, the silo top material machine is a device used to load or unload materials from the top of the silo, and is generally composed of the following main parts: a conveyor, a power system, a loading or unloading device, and a control system;

[0094] The beneficial effects of the above technical solution are: the use of the feeding module can realize automated and efficient coal transportation, reduce manpower input and transportation costs, improve production efficiency and safety, and further improve combustion efficiency.

[0095] Embodiment 4:

[0096] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, wherein the feeder comprises:

[0097] A weight sensor provided on the feeder, for detecting the weight of the coal on the feeder belt in real time;

[0098] a controller for detecting a conveying speed of a feeder belt based on a speed sensor provided at the feeder if the weight of the coal is greater than a preset weight, and controlling the speed of the feeder belt to decrease according to the excess weight;

[0099] If the weight of the coal is less than a preset weight, a speed sensor provided at the feeder is used to detect the conveying speed of the feeder belt, and the speed of the feeder belt is controlled to increase according to the lack of weight;

[0100] Wherein, the controller is connected with the weight sensor, the speed sensor and the feeder belt drive motor.

[0101] In this embodiment, the controller controls the belt speed based on the amount of coal transported per unit time. By controlling the speed, the feeding amount per unit time can be controlled.

[0102] The beneficial effect of the above technical solution is that by controlling the belt transport speed, the feeding amount per unit time can be indirectly controlled, which is much lower than the labor cost, and the safety is greatly improved, and the combustion efficiency is also improved.

[0103] Embodiment 5:

[0104] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, wherein the filler supplement analysis module comprises:

[0105] A camera device for collecting images of the combustion flame during the combustion process in chronological order;

[0106] An image processing unit, used to pre-process the collected combustion flame images and extract the combustion features in each combustion flame image;

[0107] An identification and labeling unit, used for identifying and first labeling the combustion features of different images based on the image machine learning model;

[0108] The environmental detection unit is used to detect the combustion gas and the concentration of different combustion gases in the silo, and make a second mark. At the same time, it detects the pressure and temperature in the silo and makes a third mark.

[0109] The determination unit is used to determine the combustion situation inside the silo according to the first marking result, the second marking result and the third marking result.

[0110] In this embodiment, the combustion characteristics of the flame image are based on the fact that different types of coal contain different element contents, and combustion will produce flames of different shapes and colors;

[0111] In this embodiment, the first annotation is flame identification annotation based on the image;

[0112] In this embodiment, the second labeling is based on the concentration data of different combustion gases of the sensor for identification and labeling;

[0113] In this embodiment, the third annotation is based on the pressure and temperature data of the sensor for annotation and recording;

[0114] In this embodiment, the combustion feature refers to the flame feature in the image, for example, determining whether it is a big fire, a small fire, etc., and the combustion gas may be carbon dioxide, sulfur dioxide, oxygen, etc.

[0115] The beneficial effect of the above technical solution is that the mixed coal in combustion is analyzed from multiple aspects, which is more comprehensive than the analysis from a single perspective, and improves the overall analysis accuracy of the filler supplementary analysis module.

[0116] Embodiment 6:

[0117] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, wherein the determination unit includes:

[0118] A gas set determination unit is used to determine the historical data set of different combustion gases based on the second annotation result. ,in, It represents the gas concentration of the corresponding combustion gas at time r01, and the value range of r01 is [1, r];

[0119] A pressure and temperature set determination unit, used to determine a historical pressure data set based on the third annotation result And the historical temperature data set is ,in, represents the pressure at time r02, and the value range of r01 is [1,t]; represents the temperature at time r03, and the value range of r03 is [1,y];

[0120] Alignment processing unit, used to align different data sets to obtain standardized data sets of different combustion gases , Pressure Standardized Dataset , temperature mean normalized data set , and construct the first matrix K, where m is the standardized standard time accuracy range;

[0121] ;

[0122] in, represents the gas combustion concentration of the combustion gas j02 at time j01, the value range of j01 is [1, m]; the value range of j02 is [1, k2]; represents the pressure at time j01; represents the temperature at time j01;

[0123] A factor acquisition unit, used for comparing the first matrix with a corresponding standard value to acquire an abnormal factor;

[0124] ;

[0125] in, Indicates based on expectations; represents the value of the j01th element in the j03th row vector; Indicates the number of elements in the j03th row vector; represents the standard value of the element corresponding to the j03th row vector; represents the outlier factor of the j03th row vector;

[0126] The prompt unit is used to compare all abnormal factors and abnormal factor types with the factor-combustion database, determine the factors of insufficient combustion, and issue early warning prompts.

[0127] In this embodiment, the gas historical data set is a set of historical data of various gases generated in the combustion process, for example, the historical data set of oxygen is: [concentration 1 concentration 2 concentration 3 ...];

[0128] In this embodiment, the data alignment process is to align the data set and its time series according to the minimum time precision. If there is no data at a certain moment, the data of the previous time data set is supplemented, and then the standardized data set is obtained;

[0129] In this embodiment, the abnormal factor is a combustion abnormality parameter obtained by comparing the first matrix with the corresponding standard values ​​under various units;

[0130] In this embodiment, the corresponding standard value refers to a standard preset parameter under a standard combustion state, which is set in advance and can be used directly.

[0131] In this embodiment, the factor-combustion database records the relationship between the historical data of different types of combustion conditions and abnormal factors, and can judge whether the current combustion conditions meet the standard of sufficient combustion by comparing the abnormal factors of the current combustion conditions.

[0132] The beneficial effect of the above technical solution is that through the factor acquisition unit, the environmental factors that lead to the current incomplete combustion of coal can be accurately and quickly analyzed, so that the boiler can burn coal more fully to reduce pollution and improve energy utilization efficiency.

[0133] Embodiment 7:

[0134] Based on the above embodiment 1, this embodiment provides a silo coal blending and combustion control system, wherein the coal blending module comprises:

[0135] Synchronous unit, used to obtain the filler supplement analysis results and record the supplement amount of the corresponding type of coal;

[0136] A quantity determination unit is used to analyze the supplementary quantities of different types of coal based on the silo combustion prediction model, determine the current required coal blending quantity, and generate a control instruction;

[0137] The blending control unit is used to blend different types of coal to achieve blending control when the silo receives the control instruction.

[0138] In this embodiment, the filler replenishment result data obtained by the synchronization unit will be broadcast to the silo combustion prediction model in real time, and the results of the model will also change in real time;

[0139] In this embodiment, the control instruction is an instruction obtained by comprehensive analysis of the silo combustion prediction model and different types of coal; if the current type of coal is greater than the required total amount, the silo combustion prediction model will calculate based on the maximum total amount and will not replenish it; if the current type of coal is less than the required total amount, the silo combustion prediction model will calculate the total amount of this type of coal that needs to be replenished based on the remaining amount of residual coal;

[0140] The beneficial effects of the above technical solution are: the filler replenishment analysis results are synchronized with the silo combustion prediction model in real time, which improves the efficiency and real-time performance of the coal allocation module, provides a strong data foundation for the overall process, and provides a certain degree of flexibility and scalability for the system.

[0141] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A silo coal blending and combustion control system, characterized in that: include: The combustion prediction module is used to establish a silo combustion prediction model based on the coal combustion characteristics of different types of coal, and predict the coal type ratio required for the current combustion demand and the first total amount of each type of coal in the coal type ratio; A feeding module, used for feeding a first total amount of coal to a silo according to the coal type ratio; The filling supplement analysis module is used to dynamically track the combustion process of different types of coal in the silo, determine the combustion situation inside the silo, and conduct filling supplement analysis on the remaining coal of different types after the current combustion in combination with the demand ratio; The coal blending module is used to determine the amount of coal to be supplemented based on the filler supplement analysis results, and to blend coal based on the silo to achieve blending control; Wherein, the combustion prediction module includes: A model building unit, used to build a silo combustion prediction model based on the coal combustion characteristics of different types of coal; An extraction unit, used for extracting a predetermined total required calorific value Q in the current combustion demand; A matching unit is used to match the preset calorific value associated with each type of coal to be analyzed in the coal-calorific value table and construct a preset calorific value set And the combustion temperature set ,in, Indicates the preset calorific value corresponding to the i-th coal type, and the value range of i is [1,n]; Indicates the maximum temperature corresponding to the i-th coal type; Indicates the combustion starting point temperature corresponding to the i-th coal type; Calculation unit, used to predict the coal type ratio required for current combustion demand based on the silo combustion prediction model ; ; in, Indicates the preset standard coal equivalent, unit J / t; Indicates the minimum value among the preset calorific values ​​of all coal types; Indicates the maximum value of the preset calorific value among all coal types; It represents the mean value of the preset calorific value set of all coal types; It represents the total amount of coal blending for the ith coal type; represents the stable temperature corresponding to the i-th coal type; Indicates the proportion corresponding to the i-th coal type; According to the coal ratio, the total required calorific value Q, the total amount of coal , determine the first total amount of each type of coal.

2. A silo coal blending and combustion control system as claimed in claim 1, characterized in that: The feeding module comprises: A coal bunker belt conveyor is used to convey a first total amount of various coals from the coal yard to a top material machine of a corresponding silo; The top material machine is used to feed the corresponding coal into the silo where the coal is placed based on the feeder.

3. A silo coal blending and combustion control system as claimed in claim 2, characterized in that: The feeder comprises: A weight sensor provided on the feeder, for detecting the weight of the coal on the feeder belt in real time; a controller for detecting a conveying speed of a feeder belt based on a speed sensor provided at the feeder if the weight of the coal is greater than a preset weight, and controlling the speed of the feeder belt to decrease according to the excess weight; If the weight of the coal is less than a preset weight, a speed sensor provided at the feeder is used to detect the conveying speed of the feeder belt, and the speed of the feeder belt is controlled to increase according to the lack of weight; Wherein, the controller is connected with the weight sensor, the speed sensor and the feeder belt drive motor.

4. A silo coal blending and combustion control system as claimed in claim 1, characterized in that: The filler supplement analysis module comprises: A camera device for collecting images of the combustion flame during the combustion process in chronological order; An image processing unit, used to pre-process the collected combustion flame images and extract the combustion features in each combustion flame image; An identification and labeling unit, used for identifying and first labeling the combustion features of different images based on the image machine learning model; The environmental detection unit is used to detect the combustion gas and the concentration of different combustion gases in the silo, and make a second mark. At the same time, it detects the pressure and temperature in the silo and makes a third mark. The determination unit is used to determine the combustion situation inside the silo according to the first marking result, the second marking result and the third marking result.

5. A silo coal blending and combustion control system as claimed in claim 1, characterized in that: The filler supplement analysis module further includes: A weight detection unit, used to detect a first total weight of the combustion material in the silo and a remaining weight of different types of coal remaining in the feeding module; The demand difference unit is used to determine the replenishment amount of the remaining weight of different types of coal according to the demand ratio; The quantity optimization unit is used to optimize the corresponding supplementary quantity based on the combustion conditions of different types of coal to obtain the filling quantity of the corresponding type of coal.

6. A silo coal blending and combustion control system as claimed in claim 4, characterized in that: The determining unit comprises: A gas set determination unit is used to determine the historical data set of different combustion gases based on the second annotation result. ,in, It represents the gas concentration of the corresponding combustion gas at time r01, and the value range of r01 is [1, r]; A pressure and temperature set determination unit, used to determine a historical pressure data set based on the third annotation result And the historical temperature data set is ,in, represents the pressure at time r02, and the value range of r01 is [1,t]; represents the temperature at time r03, and the value range of r03 is [1,y]; Alignment processing unit, used to align different data sets to obtain standardized data sets of different combustion gases , Pressure Standardized Dataset , temperature mean normalized data set , and construct the first matrix K, where m is the standardized standard time accuracy range; ; in, represents the gas combustion concentration of the combustion gas j02 at time j01, the value range of j01 is [1, m]; the value range of j02 is [1, k2]; represents the pressure at time j01; represents the temperature at time j01; A factor acquisition unit, used for comparing the first matrix with a corresponding standard value to acquire an abnormal factor; ; in, Indicates based on expectations; represents the value of the j01th element in the j03th row vector; Indicates the number of elements in the j03th row vector; represents the standard value of the element corresponding to the j03th row vector; represents the outlier factor of the j03th row vector; The prompt unit is used to compare all abnormal factors and abnormal factor types with the factor-combustion database, determine the factors of insufficient combustion, and issue early warning prompts.

7. A silo coal blending and combustion control system as claimed in claim 1, characterized in that: The coal allocation module comprises: Synchronous unit, used to obtain the filler supplement analysis results and record the supplement amount of the corresponding type of coal; A quantity determination unit is used to analyze the supplementary quantities of different types of coal based on the silo combustion prediction model, determine the current required coal blending quantity, and generate a control instruction; The blending control unit is used to blend different types of coal to achieve blending control when the silo receives the control instruction.

Citation Information

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