Intelligent dust fall and combustion suppression unattended management and control method and system for coal yard of thermal power plant

Abstract

The invention belongs to the technical field of unattended management of thermal power plants, and relates to an intelligent dust fall and combustion suppression unattended management and control method and system for a coal yard of a thermal power plant. The method comprises the following steps: acquiring coal dust concentration, a dust region, a plurality of coal pile weights and a plurality of coal pile position forms; obtaining the spraying amount according to the coal dust concentration, and obtaining the spraying area range according to the dust area. The coal pile temperature is obtained in real time, whether combustion suppression control needs to be carried out or not is judged according to the coal pile temperature, if yes, the component of combustion suppression medicine is obtained according to the weight of the multiple coal piles, the medicine concentration is obtained according to the component of the combustion suppression medicine and the coal pile temperature, and the spraying angle of the medicine spraying equipment is obtained according to the position forms of the multiple coal piles. The manual labor intensity and the occupational disease hazard probability are remarkably reduced through automatic spraying operation; and real-time temperature monitoring and precise spraying cooling are combined, so that spontaneous combustion of the coal pile is effectively prevented. According to the invention, intelligent safety control of the coal yard is realized, and the stability and reliability of safe operation of the coal yard are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of unattended management of thermal power plants, and relates to an intelligent dust reduction and combustion suppression unattended management method and system for a coal yard of a thermal power plant. BACKGROUND

[0002] Thermal power plants, referred to as thermal power plants, are factories that use combustible materials (such as coal) as fuel to produce electric energy, and the coal yard of a thermal power plant is a site for storing fuel coal. As an important site for coal-fired power generation of a thermal power plant, the safety of the coal yard is directly related to the continuity and stability of power production.

[0003] At present, the coal yard of a thermal power plant has safety hazards such as coal pile spontaneous combustion and coal dust explosion. Although the coal yard is closed, it basically eliminates coal dust overflow, but the conventional prevention and emergency treatment measures for coal storage are inconvenient to operate, and coal is more likely to smoke and spontaneously combust, and there is a risk of combustion and explosion after coal dust accumulates. These safety hazards not only threaten the safety of the coal yard workers, but also may have a serious impact on the surrounding environment. The safety control of the coal yard of a thermal power plant mainly relies on manual inspection and partial intelligent device assisted control, but manual inspection has a long inspection cycle, the inspection quality is difficult to guarantee, and the labor intensity of the operator is increased, and the probability of occupational hazards caused by inhaling coal dust and toxic gases. Intelligent assisted control, such as using infrared thermal imaging technology to monitor the temperature of the coal pile and setting a temperature threshold to determine whether there is a spontaneous combustion risk; using a concentration sensor to monitor the concentration of coal dust in the coal yard. However, these methods can only monitor a single safety hazard, lack a comprehensive safety monitoring and safety hazard solving system, and are difficult to effectively handle the safety hazards of coal pile spontaneous combustion and coal dust explosion in the entire coal yard. SUMMARY

[0004] The purpose of the present application is to provide an intelligent dust reduction and combustion suppression unattended management method and system for a coal yard of a thermal power plant to solve the technical problem of insufficient safety monitoring safety of the coal yard and inability to eliminate safety hazards in time after monitoring.

[0005] In order to achieve the above purpose, the following technical solutions are adopted: In a first aspect, the present application provides an intelligent dust reduction and combustion suppression unattended management system for a coal yard of a thermal power plant, comprising: a coal yard monitoring end for acquiring coal dust concentration, dust surface area, weight of a plurality of coal piles, and position and shape of a plurality of coal piles; a dust regulation end for acquiring a spraying amount according to the coal dust concentration, acquiring a spraying area range according to the dust surface area, and generating an instruction for spraying area range regulation according to the spraying area range; The fire-retardant control end is used for acquiring the coal pile temperature in real time, judging whether the fire-retardant control needs to be performed according to the coal pile temperature, acquiring the quantity of fire-retardant medicine according to the weight of the coal piles, acquiring the medicine concentration according to the quantity of fire-retardant medicine and the coal pile temperature, and acquiring the spraying angle of the medicine spraying equipment according to the position and shape of the coal piles if the fire-retardant control needs to be performed.

[0006] In a second aspect, the present application provides an intelligent dust-reducing and fire-retardant unattended management and control method for a coal yard of a thermal power plant, comprising the following steps: acquiring the coal dust concentration, the dust surface area, the weight of the coal piles and the position and shape of the coal piles; acquiring the spraying amount according to the coal dust concentration, acquiring the spraying area range according to the dust surface area, and generating an instruction for spraying area range regulation and control according to the spraying area range; acquiring the coal pile temperature in real time, judging whether the fire-retardant control needs to be performed according to the coal pile temperature, acquiring the quantity of fire-retardant medicine according to the weight of the coal piles if the fire-retardant control needs to be performed, acquiring the medicine concentration according to the quantity of fire-retardant medicine and the coal pile temperature, and acquiring the spraying angle of the medicine spraying equipment according to the position and shape of the coal piles.

[0007] Compared with the prior art, the present application has the following beneficial effects: The system comprises a coal yard monitoring end, a dust reduction control end and a combustion suppression control end. The coal yard monitoring end is used to obtain coal dust concentration, dust surface area, weight of a plurality of coal piles and position and shape of the plurality of coal piles, to comprehensively and accurately obtain key information of the coal yard, and to provide a reliable basis for subsequent dust reduction and combustion suppression operations. The dust reduction control end is used to obtain a spraying amount according to the coal dust concentration, to ensure that the coal dust concentration can be effectively reduced without causing waste of water resources. The dust reduction control end is used to obtain a spraying area range according to the dust surface area, to generate an instruction for spraying area range control according to the spraying area range, to enable the spraying operation to accurately cover the dust area, and to improve the dust reduction efficiency. The combustion suppression control end is used to obtain a coal pile temperature in real time, to timely find a situation of abnormal increase of the coal pile temperature, and to give an early warning of spontaneous combustion risk. The combustion suppression control end is used to determine whether combustion suppression control is needed according to the coal pile temperature, to obtain a quantity of combustion suppression medicine according to the weight of the plurality of coal piles if the combustion suppression control is needed, and to obtain a medicine concentration according to the quantity of the combustion suppression medicine and the coal pile temperature, to ensure that the quantity and concentration of the combustion suppression medicine are just right, to effectively suppress the spontaneous combustion of the coal pile, and to avoid other problems caused by waste and excessive use of the medicine. The combustion suppression control end is used to obtain a spraying angle of a medicine spraying device according to the position and shape of the plurality of coal piles, to enable the combustion suppression medicine to be accurately sprayed onto the surface of the coal pile, to improve the combustion suppression effect, and to realize real-time and accurate prevention and control of the spontaneous combustion risk of the coal pile. The present application integrates the coal yard monitoring end, the dust reduction control end and the combustion suppression control end to form a comprehensive control system, which can effectively deal with two major safety hazards of coal dust explosion and coal pile spontaneous combustion. In terms of dust reduction, automatic spraying operation improves the unattended control effect, significantly reduces the labor intensity and the probability of occupational hazards; in terms of combustion suppression, real-time temperature monitoring combined with accurate medicine spraying for temperature reduction effectively prevents the spontaneous combustion of the coal pile. The entire system realizes intelligent safety control, improves the stability and reliability of the safe operation of the coal yard, protects the life safety of the workers, reduces the impact on the surrounding environment, and provides strong support for the continuous and stable production of the thermal power plant.

[0008] The method of the present application obtains the coal dust concentration, the dust surface area, the weight of the coal pile and the position form of the coal pile, thereby comprehensively and accurately obtaining the key information of the coal yard, providing a reliable basis for subsequent dust reduction and combustion suppression operation; the spray amount is obtained according to the coal dust concentration, ensuring that the coal dust concentration can be effectively reduced without wasting water resources. The spray area range is obtained according to the dust surface area, and the instruction of spray area range regulation is generated according to the spray area range, so that the spray operation can accurately cover the dust area and improve the dust reduction efficiency. The coal pile temperature is obtained in real time, and the condition of abnormal temperature rise of the coal pile is found in time, so as to early warn the spontaneous combustion risk. It is judged whether the combustion control is needed according to the coal pile temperature, if the combustion control is needed, the amount of combustion suppression drug is obtained according to the weight of the coal pile, and the drug concentration is obtained according to the amount of combustion suppression drug and the coal pile temperature, which can effectively suppress the spontaneous combustion of the coal pile and avoid other problems caused by waste and overuse of the drug. The spray angle of the drug spraying equipment is obtained according to the position form of the coal pile, so that the combustion suppression drug can be accurately sprayed on the surface of the coal pile, the combustion suppression effect is improved, and the real-time and accurate prevention and control of the spontaneous combustion risk of the coal pile is realized. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The system module diagram of the embodiment of the present application is shown in the figure; Figure 2 The method flow chart of the embodiment of the present application is shown in the figure; Figure 3 The overall system logic diagram of the embodiment of the present application is shown in the figure; Figure 4 The dust reduction regulation end logic diagram of the embodiment of the present application is shown in the figure; Figure 5 The coal yard monitoring end logic diagram of the embodiment of the present application is shown in the figure; Figure 6 The combustion control end logic diagram of the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0010] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the scope of protection of the present application.

[0011] It should be noted that the terms "first", "second", and the like in the description of the application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0012] The application will be further described in detail below in conjunction with the accompanying drawings: Referring to Figure 1 The application discloses an intelligent dust suppression and combustion control system for a coal yard of a thermal power plant, comprising: A coal yard monitoring end is used to obtain coal dust concentration, dust surface area, the weight of a plurality of coal piles and the position and shape of the plurality of coal piles, to comprehensively and accurately obtain key information of the coal yard, to provide a reliable basis for subsequent dust suppression and combustion control, and to enable the entire control system to make scientific and reasonable decisions based on actual conditions, thereby avoiding misjudgment and invalid operation caused by inaccurate or incomplete information.

[0013] Referring to Figure 5 In the embodiment of the application, the coal yard monitoring end comprises a regional dust concentration detection module, a dust surface area monitoring module, a coal pile weight detection module and a coal pile visual positioning module. The regional dust concentration detection module is used to obtain the dust concentration above the unloading area, the coal storage area and the coal taking area in the coal yard. The dust surface area monitoring module is used to obtain the dust surface area above the unloading area, the coal storage area and the coal taking area in the coal yard. The coal pile weight detection module is used to obtain the weight of coal in each coal pile. The coal pile visual positioning module is used to obtain the position and shape of each coal pile.

[0014] In the embodiment of the application, the regional dust concentration detection module obtains dust concentration values at a set interval; The dust surface area monitoring module obtains dust surface area data at a set interval; The coal pile weight detection module obtains the weight of coal in a coal pile when the coal pile is stored; The coal pile visual positioning module obtains the position and shape of each coal pile when combustion control is needed.

[0015] The dust reduction control end is used for obtaining the spraying amount according to the coal dust concentration, so that the coal dust concentration can be effectively reduced without wasting water resources. The spraying area range is obtained according to the dust surface area, and the spraying area range control instruction is generated according to the spraying area range, so that the spraying operation can accurately cover the dust area and the dust reduction efficiency is improved. Through the automatic control of the spraying amount and the spraying area, efficient dust reduction under the condition of unattended is realized, and problems such as high labor intensity and occupational disease risk caused by manual dust reduction are effectively avoided.

[0016] Referring to Figure 4 In the embodiment of the present application, the dust reduction control end comprises a spraying amount calculation module and a three-dimensional imaging model calculation module. The spraying amount calculation module is used for obtaining the mean concentration of coal dust according to the coal dust concentration, and obtaining the spraying amount according to the mean concentration of coal dust. The three-dimensional imaging model calculation module is used for three-dimensional imaging according to the dust surface area, obtaining the spraying area range according to the three-dimensional imaging, and generating the spraying area range control instruction according to the spraying area range.

[0017] In the embodiment of the present application, the dust reduction control end further comprises a threshold value judgment module. The threshold value judgment module is used for comparing the coal dust concentration with the set concentration, generating the spraying area range control instruction according to the spraying area range if the coal dust concentration is greater than or equal to the set concentration, and generating the spraying end instruction if the coal dust concentration is less than the set concentration.

[0018] The combustion control end is used for obtaining the coal pile temperature in real time, discovering the situation of abnormal increase of the coal pile temperature in time, and giving early warning of the spontaneous combustion risk. Whether the combustion control is needed is judged according to the coal pile temperature, the amount of the combustion inhibitor is obtained according to the weight of the coal pile if the combustion control is needed, and the drug concentration is obtained according to the amount of the combustion inhibitor and the coal pile temperature, so that the amount and concentration of the combustion inhibitor are just right, the coal pile spontaneous combustion can be effectively inhibited, and other problems caused by waste and excessive use of the combustion inhibitor can be avoided. The spraying angle of the spraying equipment is obtained according to the position and shape of the coal pile, so that the combustion inhibitor can be accurately sprayed to the surface of the coal pile, the combustion inhibition effect is improved, and real-time and accurate prevention and control of the coal pile spontaneous combustion risk are realized.

[0019] Referring to Figure 6 In the embodiment of the present application, the combustion control end comprises a coal pile temperature detection module, a drug quantitative calculation module, a drug concentration calculation module and a drug spraying module. The coal pile temperature detection module is used for obtaining the coal pile temperature of each coal pile in real time, obtaining the mean temperature according to the coal pile temperature of each coal pile, and generating the delivery instruction of the combustion inhibitor if the mean temperature is greater than or equal to the spontaneous combustion inhibition value. A drug quantity calculation module is configured to obtain a total weight of the coal pile according to the several coal pile weights after receiving a delivery instruction of the combustion-suppressing drug, and obtain a sub-quantity of the combustion-suppressing drug according to the total weight of the coal pile; A drug concentration calculation module is configured to obtain a drug concentration according to the sub-quantity of the combustion-suppressing drug and the coal pile temperature. A drug spraying module is configured to feed back the drug concentration to the drug spraying device, and obtain a spraying angle of the drug spraying device according to the position and shape of the coal pile.

[0020] In the embodiment of the present application, the drug spraying device adjusts the concentration of the drug according to the drug concentration, and sprays the drug according to the spraying angle.

[0021] In the embodiment of the present application, the spraying module is further configured to perform a spraying operation according to an instruction of spraying area range regulation.

[0022] Based on the above system, the present application further discloses an intelligent dust-reducing and combustion-suppressing unattended management and control method for a coal yard of a thermal power plant, referring to Figure 2 , comprising the following steps: S1, obtaining the coal dust concentration, the dust surface area, the several coal pile weights and the several coal pile position and shape, comprehensively and accurately obtaining the key information of the coal yard, providing a reliable basis for subsequent dust reduction and combustion suppression operations.

[0023] S2, obtaining the spraying amount according to the coal dust concentration, ensuring that the coal dust concentration can be effectively reduced without causing waste of water resources. Obtaining the spraying area range according to the dust surface area, generating an instruction of spraying area range regulation according to the spraying area range, so that the spraying operation can accurately cover the dust area, and the dust reduction efficiency is improved.

[0024] S3, obtaining the coal pile temperature in real time, discovering the abnormal increase of the coal pile temperature in time, and giving an early warning of the spontaneous combustion risk. Judging whether the combustion suppression control is needed according to the coal pile temperature, if the combustion suppression control is needed, obtaining the sub-quantity of the combustion-suppressing drug according to the several coal pile weights, obtaining the drug concentration according to the sub-quantity of the combustion-suppressing drug and the coal pile temperature, ensuring that the use amount and concentration of the combustion-suppressing drug are just right, which can effectively suppress the spontaneous combustion of the coal pile, and can avoid other problems caused by waste and overuse of the drug. Obtaining the spraying angle of the drug spraying device according to the several coal pile position and shape, so that the combustion-suppressing drug can be accurately sprayed onto the surface of the coal pile, the combustion suppression effect is improved, and real-time and accurate prevention and control of the spontaneous combustion risk of the coal pile are realized.

[0025] In the embodiment of the present application, the coal dust concentration is collected by a plurality of dust concentration sensors, the dust surface area is collected by a high-definition industrial camera, the coal pile weight is collected by a coal pile weight detection sensor, the coal pile temperature is collected in real time by a plurality of temperature detection devices, and the coal pile position and shape is collected by a high-definition camera.

[0026] The intelligent dust reduction and combustion suppression unattended management and control system of the coal yard of the power plant realizes comprehensive upgrading of safety management and control of the coal yard. By integrating the coal yard monitoring end, the dust reduction control end and the combustion suppression control end, a comprehensive management and control system is formed, which can effectively deal with the two major safety hazards of coal dust explosion and coal pile spontaneous combustion. In terms of dust reduction, automatic spray operation improves the unattended management and control effect, significantly reducing the labor intensity and the probability of occupational hazards; in terms of combustion suppression, real-time temperature monitoring combined with precise spray cooling effectively prevents coal pile spontaneous combustion. The entire system realizes intelligent safety management and control, improves the stability and reliability of the safe operation of the coal yard, protects the life safety of the staff, reduces the impact on the surrounding environment, and provides strong support for the continuous and stable production of the power plant.

[0027] Embodiment three The embodiment provides an intelligent dust reduction and combustion suppression unattended management and control system of a coal yard of a power plant, which realizes comprehensive monitoring and preventive management of coal pile spontaneous combustion and coal dust explosion safety hazards of the entire coal yard under unattended management and control. Referring to Figure 3 An intelligent dust reduction and combustion suppression unattended management and control system of a coal yard of a power plant comprises a coal yard intelligent control system end, which is connected with a dust reduction control end, a coal yard monitoring end and a combustion suppression control end through signals. The coal yard monitoring end is connected with the dust reduction control end and the combustion suppression control end.

[0028] Referring to Figure 4 The dust reduction control end comprises a spray module and a three-dimensional imaging model calculation module connected with the coal yard intelligent control system end through electrical signals. The three-dimensional imaging model calculation module is connected with the coal yard monitoring end. The three-dimensional imaging model calculation module is connected with a spray area adjustment module through a data signal. The spray area adjustment module is connected with the spray module through electrical signals. The dust reduction control end further comprises a spray amount calculation module. The spray amount calculation module is connected with a spray amount adjustment feedback module through a data signal. The spray amount adjustment feedback module is connected with the spray module through a data signal. The spray amount calculation module is connected with the coal yard monitoring end.

[0029] Referring to Figure 5 The coal yard monitoring end comprises a regional dust concentration detection module and a dust surface area monitoring module connected with the coal yard intelligent control system end through electrical signals. The regional dust concentration detection module is connected with the spray amount calculation module through data. The dust surface area monitoring module is connected with the three-dimensional imaging model calculation module through data.

[0030] The coal yard monitoring end further comprises a coal pile weight detection module connected with the coal yard intelligent control system end through an electrical signal, the coal pile weight detection module being connected with the drug quantitative calculation module, and the coal yard monitoring end further comprising a coal pile visual positioning module connected with the coal yard intelligent control system end through an electrical signal, the coal pile visual positioning module being connected with the drug spraying module through data.

[0031] Referring to Figure 6 , the fire-retardant control end comprises a coal pile temperature detection module, a drug spraying module, a drug delivery module, a drug concentration calculation module and a drug quantitative calculation module connected with the coal yard intelligent control system end through electrical signals, the drug delivery module being connected with the coal yard intelligent control system end through electrical signals, the drug quantitative calculation module being connected with the drug delivery module through data signals, the drug quantitative calculation module being connected with the coal yard monitoring end, and the drug concentration calculation module being connected with the coal pile temperature detection module, the drug quantitative calculation module and the drug spraying module through data.

[0032] Referring to Figure 5 , the coal yard monitoring end further comprises a coal pile weight detection module connected with the coal yard intelligent control system end through an electrical signal, the coal pile weight detection module being connected with the drug quantitative calculation module, and the coal yard monitoring end further comprising a coal pile visual positioning module connected with the coal yard intelligent control system end through an electrical signal, the coal pile visual positioning module being connected with the drug spraying module through data.

[0033] The coal pile visual positioning module of the coal yard monitoring end carries out form positioning shooting and collection on each coal pile, the coal pile weight detection module detects the coal weight of each coal pile at each time of storage and carries out data collection and recording, the coal pile temperature detection module carries out multi-directional real-time collection of the temperature of the coal pile, and the coal pile temperature detection module carries out mean value calculation according to the collected multiple sets of temperature data in the coal pile area, and feeds back the mean value temperature to the coal yard intelligent control system end, if the mean value temperature reaches the set spontaneous combustion inhibition value, the coal yard intelligent control system end sends a conveying instruction of the fire retardant to the dosing device through the drug conveying module, then carries out conveying of the fire retardant, and the multiple sets of coal weight data collected by the coal pile weight detection module are fed back to the drug quantitative calculation module, then the drug quantitative calculation module calculates the total weight of the coal pile according to the multiple sets of coal weight data, and calculates the required proportion of the fire retardant through the total weight, and feeds back the data to the drug conveying module, so that the dosing device carries out quantitative conveying of the drug, and the drug concentration calculation module carries out final spraying concentration calculation of the drug according to the mean value data of the coal pile temperature and the proportion of the fire retardant, and feeds back the finally calculated drug concentration to the drug spraying module, and the drug spraying module transmits the instruction to the drug spraying device, and the drug spraying device adjusts the concentration of the drug, and the drug spraying module automatically adjusts multiple drug spraying angles of the drug spraying device according to the coal accumulation distribution of the coal pile area fed back by the coal pile visual positioning module, finally the coal yard intelligent control system sends a spraying instruction to the drug spraying module, then the drug spraying module feeds back the information to the drug spraying device, then the drug spraying device carries out accurate spraying and cooling of the coal pile, prevents spontaneous combustion of the coal pile, and effectively improves the effect of unattended control of the coal pile fire retardant.

[0034] The working principle of the intelligent dust suppression and fire retardant unattended control system is as follows: In use, by connecting the control lines between the coal yard intelligent control system, the dust control end, the coal yard monitoring end and the combustion control end, starting the entire system through the external system platform (computer), the regional dust concentration detection module and the dust area monitoring module of the coal yard monitoring end are used to detect the dust concentration and monitor the area of the coal yard in real time, and in each area where coal is operated, multiple dust concentration sensors are used in the dust concentration detection module to detect the concentration of coal dust in the area, and a high-definition industrial camera is used in the dust area monitoring module to monitor each area, and the dust concentration detection module and the dust area monitoring module feed the data collected by detection and monitoring to the spray module and the three-dimensional rendering model calculation module of the dust control end, the three-dimensional rendering model calculation module analyzes and calculates the distribution area data of coal dust according to the dust area image data collected by the high-definition industrial camera, and the spray area adjustment module calculates and controls the spray range of the spray equipment in the spray module according to the specific data of the coal dust distribution fed back by the three-dimensional rendering model calculation module, and immediately issues an instruction to control the spray area of the spray equipment in the spray module, and the spray module responds to the instruction for adjustment, and the spray amount calculation module calculates the uniform concentration of coal dust according to the coal dust concentration data detected by the multiple dust concentration sensors in the dust concentration detection module, then calculates the spray amount according to the average concentration of coal dust, and feeds back to the spray module through the spray amount adjustment feedback module, then the spray module automatically sprays dust in the area, effectively improving the effect of unmanned control of coal dust, avoiding the increase of labor and occupational disease risk caused by manual inspection and dust reduction, thereby effectively improving the intelligent control effect of the system on coal dust, and the regional dust concentration detection module and the dust area monitoring module respectively collect the concentration and dust distribution area image every 30s, which facilitates the real-time nature of the entire spray operation to increase the coal dust spray dusting, avoids the waste of resources caused by excessive spray amount, and avoids the incomplete dusting caused by insufficient spray amount, which leads to the gradual accumulation of coal dust and causes explosion hazards, thereby effectively improving the use effect of the entire control system.

[0035] The high-definition camera is installed in the coal pile visual positioning module of the coal yard monitoring end for each coal storage area. Since the coal piles are prone to uneven distribution during coal storage, the high-definition camera is used to conveniently collect image positioning data of the position and shape of each coal pile. The coal pile weight detection module uses a coal pile weight detection sensor to detect the weight of each coal pile during each storage and record the data. The coal pile weight detection module and the coal pile visual positioning module feed the collected data back to the combustion suppression control end. The coal pile temperature detection module in the combustion suppression control end installs multiple temperature detection devices in each coal pile area to collect real-time coal pile temperature data. The coal pile temperature detection module calculates the average value of the multiple temperature data collected in the coal pile area and feeds the average temperature back to the coal yard intelligent control system end. If the temperature value reaches the set spontaneous combustion suppression value, the coal yard intelligent control system end sends a delivery instruction to the dosing device through the drug delivery module to deliver the combustion suppression drug. The multiple coal weight data collected by the coal pile weight detection module is fed back to the drug quantitative calculation module, which calculates the total weight of the coal pile based on the data and calculates the required combustion suppression drug dosage based on the weight of the coal pile. The data is fed back to the drug delivery module, which feeds the information back to the dosing device, so that the dosing device delivers the drug quantitatively. The drug concentration calculation module calculates the concentration of the drug based on the average coal pile temperature data fed back by the coal pile temperature detection module and the drug dosage data fed back by the drug quantitative calculation module. The data is fed back to the drug spraying module, which transmits the information to the drug spraying device. The drug spraying device adjusts the combustion suppression drug to the concentration value fed back by the drug concentration calculation module, and then feeds the information back to the coal yard intelligent control system end when the drug concentration adjustment is completed. The coal pile visual positioning module of the coal yard monitoring end feeds the image data of the position and shape of the coal pile area to the drug spraying module. The drug spraying module automatically adjusts the multiple drug spraying angles of the drug spraying device based on the coal accumulation distribution of the coal pile area. When the adjustment is completed, the drug spraying module feeds the information back to the coal yard intelligent control system end, which sends a drug spraying instruction to the drug spraying module. The drug spraying module feeds the information back to the drug spraying device, which then sprays the coal pile accurately to prevent spontaneous combustion and effectively improves the effect of coal pile combustion suppression unattended control.

[0036] The application improves the effect of unmanned monitoring and control of coal dust by automatic spraying dust reduction operation, avoids the increase of labor intensity and the risk of occupational diseases caused by artificial inspection and dust reduction, and effectively improves the intelligent dust reduction and combustion suppression effect of the system. The application improves the effect of unmanned monitoring and control of coal dust by automatic spraying dust reduction operation, avoids the increase of labor intensity and the risk of occupational diseases caused by artificial inspection and dust reduction, and effectively improves the intelligent dust reduction and combustion suppression effect of the system.

[0037] The application improves the effect of unmanned monitoring and control of coal dust by automatic spraying dust reduction operation, avoids the increase of labor intensity and the risk of occupational diseases caused by artificial inspection and dust reduction, and effectively improves the intelligent dust reduction and combustion suppression effect of the system.

[0038] The above content only illustrates the technical idea of the application, and cannot limit the protection scope of the application. Any modification made according to the technical idea of the application on the basis of the technical scheme falls within the protection scope of the application.

Claims

1. An intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant, characterized in that, The coal yard monitoring end is used for acquiring coal dust concentration, dust surface area, weight of a plurality of coal piles, and position and shape of the plurality of coal piles. The dust reduction control end is used for acquiring spray amount according to the coal dust concentration, acquiring spray area range according to the dust surface area, and generating an instruction for spray area range control according to the spray area range. The combustion suppression control end is used for acquiring coal pile temperature in real time, judging whether combustion suppression control is needed according to the coal pile temperature, acquiring a quantity of combustion suppression medicine according to the weight of the plurality of coal piles if the combustion suppression control is needed, acquiring medicine concentration according to the quantity of the combustion suppression medicine and the coal pile temperature, and acquiring a spraying angle of a medicine spraying device according to the position and shape of the plurality of coal piles. The dust reduction control end comprises:

2. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 1, characterized in that, A spray amount calculation module, which is used for acquiring mean concentration of coal dust according to the coal dust concentration, and acquiring the spray amount according to the mean concentration of the coal dust. A three-dimensional imaging model calculation module, which is used for three-dimensional imaging according to the dust surface area, acquiring the spray area range according to the three-dimensional imaging, and generating the instruction for the spray area range control according to the spray area range. The dust reduction control end further comprises:

3. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 1, characterized in that, A threshold value judgment module, which is used for comparing the coal dust concentration with a set concentration, generating the instruction for the spray area range control according to the spray area range if the coal dust concentration is greater than or equal to the set concentration, and generating a spray end instruction if the coal dust concentration is less than the set concentration. The combustion suppression control end comprises:

4. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 1, characterized in that, A coal pile temperature detection module, which is used for acquiring coal pile temperature of each coal pile in real time, acquiring mean temperature according to the coal pile temperature of each coal pile, and generating a delivery instruction of the combustion suppression medicine if the mean temperature is greater than or equal to the spontaneous combustion suppression value, so that the combustion suppression control is needed. A medicine quantitative calculation module, which is used for acquiring total weight of the coal piles according to the weight of the plurality of coal piles after receiving the delivery instruction of the combustion suppression medicine, and acquiring the quantity of the combustion suppression medicine needed according to the total weight of the coal piles. A medicine concentration calculation module, which is used for acquiring the medicine concentration according to the quantity of the combustion suppression medicine and the coal pile temperature. A medicine spraying module, which is used for feeding back the medicine concentration to the medicine spraying device, and acquiring the spraying angle of the medicine spraying device according to the position and shape of the coal piles. The medicine spraying device adjusts the concentration of the medicine according to the medicine concentration, and sprays the medicine to reduce temperature according to the spraying angle.

5. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 4, characterized in that, The coal yard monitoring end comprises:

6. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 1, characterized in that, A regional dust concentration detection module, which is used for acquiring dust concentration above unloading area, coal storage area, and coal taking area in the coal yard. A dust surface area monitoring module, which is used for acquiring dust surface area above the unloading area, the coal storage area, and the coal taking area in the coal yard. A coal pile weight detection module, which is used for acquiring coal weight of each coal pile. A coal pile visual positioning module, which is used for acquiring position and shape of each coal pile.

7. The intelligent dust reduction and combustion suppression unattended control system for the coal yard of the thermal power plant according to claim 6, wherein: The regional dust concentration detection module acquires dust concentration values every set time interval. The dust surface area monitoring module acquires dust surface area data every set time interval. The coal pile weight detection module acquires coal weight of the coal pile when the coal pile is stored. The coal pile visual positioning module acquires position and shape of each coal pile when combustion suppression control is needed. Further comprising:

8. The intelligent dust suppression and fire prevention unattended management and control system for a coal yard of a thermal power plant according to claim 1, characterized in that, ​ The spray module is used for performing a spraying operation according to an instruction of spray area range regulation.

9. An intelligent dust suppression and fire prevention unattended management and control method for a coal yard of a thermal power plant, characterized in that, The method comprises the following steps: Acquiring coal dust concentration, dust surface area, weight of a plurality of coal piles and position and shape of the plurality of coal piles; Acquiring a spraying amount according to the coal dust concentration, acquiring a spraying area range according to the dust surface area, and generating an instruction of spray area range regulation according to the spraying area range; Acquiring a coal pile temperature in real time, judging whether combustion suppression control is needed according to the coal pile temperature, acquiring a quantity of combustion suppression medicine according to the weight of the plurality of coal piles if the combustion suppression control is needed, acquiring a medicine concentration according to the quantity of the combustion suppression medicine and the coal pile temperature, and acquiring a spraying angle of a medicine spraying device according to the position and shape of the plurality of coal piles.

10. The intelligent dust suppression and fire prevention unattended management and control method of a coal yard of a thermal power plant according to claim 9, characterized in that, The coal dust concentration is collected by a plurality of dust concentration sensors, the dust surface area is collected by a high-definition industrial camera, the weight of the coal piles is collected by a coal pile weight detection sensor, the coal pile temperature is collected in real time by a plurality of temperature detection devices, and the position and shape of the coal piles are collected by a high-definition camera.

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