Material piling and taking management method and system for coal yard

Abstract

The invention discloses a material piling and taking management method and system for a coal yard. The method comprises the following steps: determining coal quality characteristic information of stored coal quantity and coal quality characteristic information of pre-piling and taking coal quantity corresponding to each coal piling and taking area in the coal yard; respectively calculating the matching similarity between the coal quality characteristic information of each stored coal quantity and the coal quality characteristic information of the pre-piled coal quantity; performing priority ranking on the plurality of coal piling and taking areas according to the matching similarity to obtain a ranking result of the coal piling and taking areas; carrying out piling and taking operation on the plurality of coal piling and taking areas through coal piling and taking equipment according to the pre-piling and taking coal quantity on the basis of a coal piling and taking area sorting result; and after piling and taking operation is completed, the coal storage result of each coal piling and taking area is corrected according to the mass difference before and after coal piling and taking of each coal piling and taking area. The coal yard management information system and the coal piling and taking equipment positioning and automatic coal inventory functions are combined, automatic coal piling and taking operation is achieved, manual intervention is not needed, the risk caused by misoperation of field personnel is reduced, and the coal yard management quality is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal stacking and reclaiming processing, and in particular to a coal yard stacking and reclaiming management method and system. Background Art

[0002] With the advancement of technology and continuous improvement in management, most of my country's coal-fired power plants have bid farewell to the past extensive management methods and are moving towards more and more sophisticated aspects. At present, many domestic coal-fired power plants have deployed coal yard management systems and realized the functions of bucket wheel machine positioning and automatic coal handling in the coal yard. Due to the harsh operating environment of the coal yard, the complex on-site machinery and equipment, and the great risk of spontaneous combustion, it is extremely unfavorable for personnel to operate. Faced with the above situation, many power plants use drones to realize the automatic coal handling operation of bucket wheel machines (or coal handling equipment) in the coal yard. However, there are still many difficulties: (1) Due to equipment and management factors, it is difficult to achieve true "unmanned operation" in actual drone duty, and it is still operated by people on site; (2) Because the actual location information of coal handling cannot fully match the requirements, personnel are required to remotely control the positioning operation of coal handling, and it is still impossible to achieve complete automatic control and automatic completion, and it is impossible to reduce the workload of personnel operation.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a method and system for managing the stacking and reclaiming of coal in a coal yard, aiming to solve the technical problem of how to realize the automatic operation of the stacking and reclaiming of coal.

[0005] To achieve the above object, the present invention provides a method for managing the stacking and reclaiming of a coal yard, the method comprising:

[0006] Determine the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard;

[0007] Calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal taking area and the coal quality characteristic information of the pre-pile coal taking quantity;

[0008] Prioritize the plurality of coal-collecting areas according to the matching similarity and the area output rule to obtain a coal-collecting area sorting result;

[0009] Based on the sorting result of the coal piling and taking areas, a plurality of coal piling and taking areas are piled and taken by the coal piling and taking equipment according to the pre-pile and taken coal quantity;

[0010] After completing the stacking operation, the quality difference of each coal stacking area before and after coal stacking is calculated according to the coal panning results before and after the corresponding coal stacking areas, and the coal storage results of each coal stacking area are corrected according to the quality difference before and after the coal stacking.

[0011] Optionally, the step of respectively calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal taking quantity comprises:

[0012] Calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity by using a matching similarity algorithm;

[0013] The coal quality characteristic information of the stored coal includes the calorific value of the stored coal, the volatile value of the stored coal, the sulfur content of the stored coal, the moisture content of the stored coal and the ash content of the stored coal;

[0014] The pre-pile coal quantity includes the pre-pile coal quantity and the pre-taken coal quantity, the coal quality characteristic information of the pre-pile coal quantity includes the pre-pile coal calorific value, the pre-pile coal volatile value, the pre-pile coal sulfur content, the pre-pile coal moisture content and the pre-pile coal ash content, and the coal quality characteristic information of the pre-taken coal quantity includes the pre-taken coal calorific value, the pre-taken coal volatile value, the pre-taken coal sulfur content, the pre-taken coal moisture content and the pre-taken coal ash content;

[0015] The matching similarity algorithm is:

[0016] P=a1×(h2-h1)+a2×(v2-v1)+a3×(s2-s1)+a4×(w2-w1)+a5×(c2-c1)

[0017] In the formula, P is the matching similarity, h2 is the calorific value of pre-pile coal or pre-taken coal, h1 is the calorific value of stored coal, v2 is the volatile value of pre-pile coal or pre-taken coal, v1 is the volatile value of stored coal, s2 is the sulfur content of pre-pile coal or pre-taken coal, s1 is the sulfur content of stored coal, w2 is the moisture content of pre-pile coal or pre-taken coal, w1 is the moisture content of stored coal, c2 is the ash content of pre-pile coal or pre-taken coal, and c1 is the ash content of stored coal.

[0018] Optionally, the step of performing a stacking operation on a plurality of coal-taking areas by using a coal-taking device based on the sorting result of the coal-taking areas and according to the pre-stacked coal amount comprises:

[0019] Determine the area position corresponding to the first target coal-taking area from the plurality of coal-taking areas based on the coal-taking area sorting result;

[0020] According to the regional position, the moving distance and the cantilever swing angle are obtained by using a coal stacking and taking device, wherein the coal stacking and taking device is a bucket wheel machine of a strip coal yard;

[0021] Based on the moving distance and the cantilever swing angle, the first target coal stacking area is stacked and taken by the bucket wheel excavator of the strip coal yard according to the pre-stacked coal amount.

[0022] Optionally, the step of obtaining the moving distance and the cantilever swing angle by using the coal stacking and taking equipment according to the regional position includes:

[0023] Determine the first straight-line distance between the area position and the bucket wheel machine of the strip coal yard, and determine the swing arm distance according to the swing arm length of the bucket wheel machine and the maximum swing angle of the bucket wheel machine;

[0024] Determining whether the first straight-line distance is greater than the swing arm distance;

[0025] When the first straight-line distance is greater than the swing arm distance, the first straight-line distance is used as the moving distance, and the counterclockwise initial swing angle of the bucket wheel machine swing arm is used as the cantilever swing angle.

[0026] Optionally, after the step of determining whether the first straight-line distance is greater than the arm swing distance, the method further includes:

[0027] When the first straight line distance is less than or equal to the swing arm distance, the moving distance is zero;

[0028] Obtaining the cantilever swing angle through a swing angle algorithm according to the first straight-line distance, the initial swing angle of the bucket wheel machine swing arm and the length of the bucket wheel machine swing arm;

[0029] The swing angle algorithm is:

[0030] α1-α1'=α1-arcsinL1 / H

[0031] Where α1 is the initial swing angle of the bucket wheel machine's swing arm, α1' is the cantilever swing angle, L1 is the first straight line distance, and H is the length of the bucket wheel machine's swing arm.

[0032] Optionally, the step of performing a stacking operation on a plurality of coal taking areas by using a coal taking device based on the sorting result of the coal taking areas and according to the pre-stacked coal taking amount, further includes:

[0033] Determine the area position corresponding to the first target coal-taking area from the plurality of coal-taking areas based on the coal-taking area sorting result;

[0034] According to the rotation swing angle corresponding to the position of the area and the initial cantilever angle, a swing angle is obtained by using a coal stacking and taking device, wherein the coal stacking and taking device is a circular stacking machine of a circular coal yard;

[0035] Based on the swing angle and the pre-piling coal quantity, a stacking operation is performed on the first target coal stacking area through a circular stacker of the circular coal yard.

[0036] Optionally, after the step of performing a piling operation on a plurality of piling coal areas by a piling coal device according to the pre-piling coal amount based on the piling coal area sorting result, the method further includes:

[0037] When performing the extraction operation, the matching similarity between the coal quality characteristic information of the actual coal extraction amount and the coal quality characteristic information of the pre-extracted coal extraction amount corresponding to each coal extraction area is calculated by the matching similarity algorithm;

[0038] If the matching similarity is greater than a preset threshold, it is determined that the coal quality deviation is too large, the coal taking operation is stopped, and the process returns to the step of calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal taking area and the coal quality characteristic information of the pre-pile coal taking quantity.

[0039] Optionally, the step of respectively calculating the quality difference before and after coal extraction of each coal extraction area according to the coal panning results before and after coal extraction corresponding to each coal extraction area comprises:

[0040] Determine the height of the coal panning before and after scanning of each coal-taking area according to the coal panning results before and after scanning of each coal-taking area;

[0041] The volume difference before and after coal collection in each coal collection area is calculated by using a volume difference formula according to the height of the coal pan corresponding to each coal collection area before and after coal collection;

[0042] The volume difference formula is:

[0043]

[0044] In the formula, ΔV is the volume difference before and after coal is taken out of the pile, Δx is the length of each section in the length direction, Δy is the length of each section in the width direction, and h ij ' is the height of the coal pan after scanning, h ij is the height of the coal pan before scanning, N is the number of segments in the length direction, M is the number of segments in the width direction, x0 is the starting coordinate of the total length, x1 is the end coordinate of the total length, y0 is the starting coordinate of the total width, y1 is the end coordinate of the total width;

[0045] Calculate the mass difference before and after coal removal in each coal removal area by using a mass difference formula according to the volume difference before and after coal removal and the volume block density;

[0046] The mass difference formula is:

[0047]

[0048] Where Δm is the mass difference before and after coal is taken from the pile, ρ ij is the volume density.

[0049] Optionally, the step of respectively correcting the coal storage results of each coal-taking area according to the quality difference before and after taking coal from the coal pile comprises:

[0050] The increase in the amount of coal taken from each coal-taking area is calculated according to the quality difference before and after the coal-taking and the flow rate of the coal-taking belt scale through the increase formula;

[0051] The increase formula is:

[0052] I=b1*F+b2*Δm

[0053] Where, I is the increase in the amount of coal taken from the pile, b1 is the belt weighing coefficient, F is the flow rate of the coal taking belt scale, and b2 is the coefficient of the pile taking operating system;

[0054] The coal storage result of each coal-taking area is corrected according to the increased amount of coal-taking and the initial belt scale flow.

[0055] In addition, to achieve the above-mentioned purpose, the present invention also proposes a coal yard stacking and reclaiming management system, the coal yard stacking and reclaiming management system comprising:

[0056] A determination module, used to determine the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard;

[0057] A matching module, used for respectively calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity;

[0058] A sorting module is used to prioritize the multiple coal-collecting areas according to the matching similarity and the area output rule to obtain the coal-collecting area sorting result;

[0059] A stacking and taking module, used for performing a stacking and taking operation on a plurality of coal stacking and taking areas through a coal stacking and taking device according to the pre-stacked coal amount based on the sorting result of the coal stacking and taking areas;

[0060] The correction module is used to calculate the quality difference before and after coal piling in each coal piling area according to the coal panning results before and after the coal piling in each coal piling area after the piling operation is completed, and to correct the coal storage results of each coal piling area according to the quality difference before and after the coal piling.

[0061] In addition, to achieve the above-mentioned purpose, the present invention also proposes a coal yard stacking and reclaiming management device, which includes: a memory, a processor, and a coal yard stacking and reclaiming management program stored in the memory and executable on the processor, and the coal yard stacking and reclaiming management program is configured to implement the steps of the coal yard stacking and reclaiming management method as described above.

[0062] In addition, to achieve the above objectives, the present invention also proposes a storage medium, on which a coal yard stacking and reclaiming management program is stored. When the coal yard stacking and reclaiming management program is executed by a processor, the steps of the coal yard stacking and reclaiming management method as described above are implemented.

[0063] The present invention first determines the coal quality characteristic information of the stored coal amount and the coal quality characteristic information of the pre-pile coal amount corresponding to each coal-taking area in the coal yard, and then respectively calculates the matching similarity between the coal quality characteristic information of the stored coal amount and the coal quality characteristic information of the pre-pile coal amount corresponding to each coal-taking area, and then prioritizes multiple coal-taking areas according to the matching similarity and the regional output rule to obtain the sorting result of the coal-taking area, and then performs the stacking operation on multiple coal-taking areas according to the pre-pile coal amount through the coal-taking equipment based on the sorting result of the coal-taking area, and finally after the stacking operation is completed, the quality difference before and after the stacking of each coal-taking area is calculated according to the coal panning results before and after the stacking of each coal-taking area, and the coal storage results of each coal-taking area are respectively corrected according to the quality difference before and after the stacking. In the present invention, the existing coal yard management information system, bucket wheel positioning and automatic coal panning functions are combined to fully realize the automatic operation of stacking and taking coal, which is automatically completed by the system without manual intervention, thereby reducing the risk caused by operational errors of on-site personnel and improving the management quality of the coal yard. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a structural schematic diagram of a coal yard stacking and reclaiming management device in a hardware operating environment involved in an embodiment of the present invention;

[0065] Figure 2 It is a schematic flow chart of a first embodiment of a method for managing a coal yard stacker and reclaimer according to the present invention;

[0066] Figure 3 It is a flow chart of the coal piling principle of the first embodiment of the coal yard piling and reclaiming management method of the present invention;

[0067] Figure 4 It is a flow chart of the coal taking principle of the first embodiment of the method for managing the stacking and reclaiming of a coal yard of the present invention;

[0068] Figure 5 A schematic diagram of the movement of a bucket wheel machine in a strip coal yard in the first embodiment of the method for managing the stacking and reclaiming of a coal yard of the present invention;

[0069] Figure 6 It is a schematic diagram of the movement of a circular coal yard round stacker in the first embodiment of the coal yard stacking and reclaiming management method of the present invention;

[0070] Figure 7 It is a schematic diagram of the scanning results of the coal plate before the coal pile in the first embodiment of the coal yard stacking and reclaiming management method of the present invention;

[0071] Figure 8 It is a structural block diagram of the first embodiment of the coal yard stacker and reclaimer management system of the present invention.

[0072] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0073] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0074] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the stacking and reclaiming management equipment of a coal yard in the hardware operating environment involved in the embodiment of the present invention.

[0075] like Figure 1 As shown, the stacking and reclaiming management equipment of the coal yard may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage system independent of the aforementioned processor 1001.

[0076] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the stacking and reclaiming management equipment of the coal yard, and may include more or less components than those shown in the figure, or combine certain components, or arrange the components differently.

[0077] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a stacking and reclaiming management program of a coal yard.

[0078] exist Figure 1In the stacking and reclaiming management equipment of the coal yard shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the stacking and reclaiming management equipment of the coal yard of the present invention can be set in the stacking and reclaiming management equipment of the coal yard, and the stacking and reclaiming management equipment of the coal yard calls the stacking and reclaiming management program of the coal yard stored in the memory 1005 through the processor 1001, and executes the stacking and reclaiming management method of the coal yard provided in the embodiment of the present invention.

[0079] The embodiment of the present invention provides a method for managing the stacking and reclaiming of coal yards, referring to Figure 2 , Figure 2 It is a flow chart of the first embodiment of the method for managing coal yard stacking and reclaiming according to the present invention.

[0080] In this embodiment, the coal yard stacking and reclaiming management method includes the following steps:

[0081] Step S10: determining the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard.

[0082] It is easy to understand that the executor of this embodiment can be a coal yard stacking and reclaiming management system (i.e., coal yard management system) with functions such as data processing, network communication and program running, or other computer equipment with similar functions, etc., and this embodiment is not limited.

[0083] In this embodiment, reference Figure 3 and Figure 4 , Figure 3 This is a flow chart of the coal piling principle of the first embodiment of the coal yard piling and reclaiming management method of the present invention. Figure 4 This is a flow chart of the coal taking principle of the first embodiment of the coal yard stacking and reclaiming management method of the present invention. In this solution, automatic coal stacking and coal reclaiming operations can be realized through the coal yard management system.

[0084] It should be understood that the pre-stack coal quantity includes the pre-stack coal quantity and the pre-taken coal quantity, and the coal quality characteristic information of the pre-stack coal quantity includes the coal quality characteristic information of the pre-stack coal quantity and the coal quality characteristic information of the pre-taken coal quantity.

[0085] In the specific implementation, refer to Figure 3 According to the existing fuel full-process system or fuel supervision system of the power plant, the information of the coal arriving at the port (power plant coal unloading port) or the plant is obtained, and the fuel management system automatically formulates a coal unloading and stacking plan. According to the amount of incoming coal (i.e. the amount of pre-piled coal) and coal quality information (calorific value, volatile matter, etc.), the incoming coal is stacked in a specific area of ​​the coal yard to complete the coal stacking operation.

[0086] In the specific implementation, refer to Figure 4, the power plant's coal distribution plan is issued, and the coal-taking signal comes. The coal-fired power plant issues a coal distribution plan (i.e., coal-taking plan) based on the production situation of the next day (or the next stage). The fuel management system automatically formulates a coal-taking plan, and takes coal (or loads coal) in a specific area of ​​the coal yard based on the coal quantity (i.e., the pre-taken coal quantity) and coal quality information (calorific value, volatile matter, etc.) in the coal distribution plan.

[0087] Step S20: respectively calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal taking quantity.

[0088] Furthermore, the matching similarity algorithm is used to calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity.

[0089] It should be understood that the coal quality characteristic information of the stored coal includes the calorific value of the stored coal, the volatile value of the stored coal, the sulfur content of the stored coal, the moisture content of the stored coal and the ash content of the stored coal; the pre-pile coal quantity includes the pre-pile coal quantity and the pre-taken coal quantity, and the coal quality characteristic information of the pre-pile coal quantity includes the calorific value of the pre-pile coal, the volatile value of the pre-pile coal, the sulfur content of the pre-pile coal, the moisture content of the pre-pile coal and the ash content of the pre-taken coal. The coal quality characteristic information of the pre-taken coal quantity includes the calorific value of the pre-taken coal, the volatile value of the pre-taken coal, the sulfur content of the pre-taken coal, the moisture content of the pre-taken coal and the ash content of the pre-taken coal.

[0090] The matching similarity algorithm is:

[0091] P=a1×(h2-h1)+a2×(v2-v1)+a3×(s2-s1)+a4×(w2-w1)+a5×(c2-c1)

[0092] In the formula, P is the matching similarity, h2 is the calorific value of pre-pile coal or pre-taken coal, h1 is the calorific value of stored coal, v2 is the volatile value of pre-pile coal or pre-taken coal, v1 is the volatile value of stored coal, s2 is the sulfur content of pre-pile coal or pre-taken coal, s1 is the sulfur content of stored coal, w2 is the moisture content of pre-pile coal or pre-taken coal, w1 is the moisture content of stored coal, c2 is the ash content of pre-pile coal or pre-taken coal, and c1 is the ash content of stored coal.

[0093] It should be noted that the matching similarity algorithm in the coal stacking operation and the coal taking operation is consistent, and the amount of coal stored in each stacking and taking area of ​​the coal yard (coal yard stackable area and coal yard takeable area) can be obtained through the fuel management system.

[0094] It should be understood that in the coal stacking operation, the amount of coal stored in each area of ​​the coal yard is obtained through the fuel management system, and the "available coal amount" is further calculated. The available coal amount = maximum coal storage amount - stored coal amount; the maximum coal storage amount in each area of ​​the coal yard can be set manually and is generally initialized to a fixed value.

[0095] During the coal-taking operation, the coal storage volume in each area of ​​the coal yard is analyzed to obtain the "available coal volume", which is the amount of coal stored.

[0096] Step S30: Prioritize the plurality of coal-collecting areas according to the matching similarity and the area output rule to obtain a coal-collecting area ranking result.

[0097] It should be noted that the coal storage area with the lowest matching similarity and the coal storage volume greater than the incoming coal volume is the most prioritized coal storage area (i.e., the first target storage area), and is output as the coal storage area without manual intervention. Manual intervention is possible, and the coal storage area after manual intervention is output.

[0098] The coal storage area with the lowest matching similarity and the available coal volume greater than the coal volume is the most prioritized coal storage area (i.e., the first target coal extraction area). In the absence of manual intervention, the output is the coal extraction area. Manual intervention is possible, and the coal extraction area after manual intervention is output.

[0099] The first target stacking area includes a first target stacking area and a first target taking area.

[0100] It should be understood that the regional output rules for pile operations need to satisfy the matching similarity from low to high, and the storable coal amount is greater than the incoming coal amount; the regional output rules for take operations need to satisfy the matching similarity from low to high, and the takeable coal amount is greater than the taken coal amount.

[0101] It should also be noted that if the coal storage in a single area is insufficient, the coal storage matching degree will be sorted from low to high until the available coal storage meets the coal supply requirements; if the coal extraction amount in a single area cannot meet the requirements, it will be sorted from low to high according to the matching degree until the coal extraction amount meets the requirements.

[0102] Step S40: performing a stacking operation on a plurality of coal taking areas by using a coal taking device based on the sorting result of the coal taking areas and according to the pre-stacked coal taking amount.

[0103] Furthermore, based on the coal stacking area sorting result, the area position corresponding to the first target coal stacking area is determined from multiple coal stacking areas; according to the area position, the moving distance and the cantilever swing angle are obtained through the coal stacking equipment, and the coal stacking equipment is a bucket wheel excavator of a strip coal yard; based on the moving distance and the cantilever swing angle, the first target coal stacking area is stacked and taken according to the pre-stacked coal amount through the bucket wheel excavator of the strip coal yard.

[0104] Among them, the processing method for obtaining the moving distance and the cantilever swing angle through the coal stacking and unloading equipment according to the regional position is to determine the first straight-line distance between the regional position and the bucket wheel machine of the strip coal yard, and determine the swing arm distance according to the bucket wheel machine swing arm length and the maximum swing angle of the bucket wheel machine; judge whether the first straight-line distance is greater than the swing arm distance; when the first straight-line distance is greater than the swing arm distance, use the first straight-line distance as the moving distance, and use the counterclockwise initial swing angle of the bucket wheel machine swing arm as the cantilever swing angle; when the first straight-line distance is less than or equal to the swing arm distance, the moving distance is zero; the cantilever swing angle is obtained through the swing angle algorithm according to the first straight-line distance, the initial swing angle of the bucket wheel machine swing arm and the bucket wheel machine swing arm length.

[0105] In this embodiment, reference Figure 5 , Figure 5 This is a schematic diagram of the movement of a bucket wheel machine in a strip coal yard in the first embodiment of the method for managing the stacking and reclaiming of a coal yard of the present invention. A1 is the original position of the bucket wheel machine, α1 is the initial swing angle of the bucket wheel machine's swing arm, H is the length of the bucket wheel machine's swing arm, and the coal storage area is output according to the matching results of the coal quality information of the coal pile and the coal storage information of the coal yard. The output coal storage area is generally a range, as shown in Figures B1 and B2 below, B1 is the optimal matching coal pile position (i.e., the first target coal pile area position), B2 is the suboptimal matching coal pile position (i.e., the second target coal pile area position), and so on; the distances between the bucket wheel machine and the center position of the coal storage are L1 and L2, respectively, L1 is the first straight-line distance, L2 is the second straight-line distance, and so on. The maximum swing angle of the bucket wheel machine (left-right symmetrical) is αmax.

[0106] Among them, H and αmax are fixed values; αmax is generally 60° (45°~60°, depending on the actual situation of the equipment), and H·sinαmax is the swing arm distance.

[0107] Here is a specific example:

[0108] (1) Determination of the first moving distance: When L1>H·sinαmax, the moving distance is L1, and the cantilever swing angle is α1 counterclockwise, that is, the cantilever is perpendicular to the guide rail and coal is piled; when L1≤H·sinαmax, there is no movement, the cantilever angle (i.e., the cantilever swing angle) is α1', and the swing angle is α1-α1'=α1-arcsinL1 / H, which is counterclockwise when greater than 0 and clockwise when less than 0;

[0109] (2) Determination of the second moving distance: When L2-L1≤H·sinαmax, there is no movement, and the angle after the cantilever swings is α2. δL=L2-L1=H·sinα2, α2=arcsin(L2-L1) / H, and the cantilever needs to swing at an angle of α1'-α2; when L2-L1>H·sinαmax, the bucket wheel excavator moves a distance of δL=L2-L1, the swing arm is perpendicular to the track, and the swing angle is α1'.

[0110] If the bucket wheel machine needs to be moved in the coal storage area, and there are more than two locations in the coal storage area, the subsequent operation is a repetition of the above (1) and (2). Step (2) is actually a repetition of step (1). The distance of each movement can be compared with the original position. The cantilever angle completed in the last swing is the initial angle for the next swing.

[0111] Furthermore, a processing method for performing stacking operations on multiple coal stacking areas through coal stacking equipment according to the pre-stacked coal quantity based on the coal stacking area sorting result can also be as follows: determining the area position corresponding to the first target coal stacking area from multiple coal stacking areas based on the coal stacking area sorting result; obtaining the swing angle through the coal stacking equipment according to the rotation swing angle and the initial cantilever angle corresponding to the area position, the coal stacking equipment being a circular stacker of a circular coal yard; performing stacking operations on the first target coal stacking area through the circular stacker of the circular coal yard according to the pre-stacked coal quantity based on the swing angle.

[0112] In the specific implementation, refer to Figure 6 , Figure 6 The circular coal yard round stacker movement schematic diagram of the first embodiment of the coal yard stacking and reclaiming management method of the present invention is shown in the figure. The circular coal yard coal stacker and reclaiming equipment can rotate 360 ​​degrees without moving the coal yard, only the swing arm needs to be swung. The swing angle is the difference between the target position (i.e., the rotation swing angle corresponding to the regional position) and the initial swing angle (i.e., the initial cantilever angle).

[0113] It should also be noted that if there are multiple matching coal pile positions (a single coal storage position cannot meet all storage requirements), then based on the matching results and the cantilever position of the original equipment, the swing arm can be rotated clockwise or counterclockwise to pile the coal.

[0114] The clockwise and counterclockwise rules are determined by the total angle of multiple rotations being the smallest.

[0115] It should be understood that the equipment positioning and swing angle logic during the above-mentioned coal taking are the same as those for coal piling operations.

[0116] In the specific implementation, the coal stacking equipment performs coal stacking operations; the coal stacking belt scale measures the amount of coal stacking; and the coal stacking stops when the required amount of coal is reached. It is necessary to perform coal stacking operations in multiple areas multiple times, and return to the steps of performing coal stacking operations on multiple coal stacking areas through the coal stacking equipment according to the pre-stacked coal amount based on the sorting results of the coal stacking areas until all coal stacking operations are completed.

[0117] It should also be noted that when performing the coal-taking operation, the matching similarity between the coal quality characteristic information of the actual coal taking amount corresponding to each coal-taking area and the coal quality characteristic information of the pre-taken coal amount is calculated through a matching similarity algorithm; if the matching similarity is greater than the preset threshold, it is determined that the coal quality deviation is too large, the coal-taking operation is stopped, and the process returns to the step of calculating the matching similarity between the coal quality characteristic information of the stored coal amount corresponding to each pile of coal-taking area and the coal quality characteristic information of the pre-pile coal taking amount.

[0118] In this embodiment, the online system automatically obtains the coal quality information of the actual coal taken according to the quality of the coal entering the furnace, and matches it with the coal blending plan (i.e., the coal quality information of the pre-taken coal quantity). If the coal quality deviation is too large, the coal taking position is automatically corrected in combination with the coal management system, and the step of calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each pile of coal taking area and the coal quality characteristic information of the pre-pile coal taking quantity is returned.

[0119] Matching similarity = d1×(actual coal calorific value - coal blending plan calorific value) + d2×(actual coal volatile matter - coal blending plan volatile matter) + d3×(actual coal sulfur content - coal blending plan sulfur content) + d4×(actual coal moisture content - coal blending plan moisture content) + d5×(actual coal ash content - coal blending plan ash content). The lower the matching similarity, the better. The higher the matching similarity, the higher the deviation. d1~d5 are the coefficients of various deviation coal quality parameters, which are fixed values ​​and can be manually configured. If the matching similarity is higher than the threshold (which can be set manually), it is determined that the coal quality deviation is too large and the coal extraction operation needs to be stopped.

[0120] It should be understood that the coal taking equipment performs coal taking operation; the coal conveyor scale measures the coal taking amount; and when the coal taking amount is reached, coal taking is stopped. If multiple coal taking operations are required in multiple areas, the step of performing the stacking operation on multiple coal taking areas through the coal taking equipment based on the sorting result of the coal taking areas according to the pre-stacked coal taking amount is returned until all coal taking operations are completed.

[0121] Step S50: After the stacking operation is completed, the quality difference of each coal stacking area before and after the coal stacking is calculated according to the coal counting results before and after the coal stacking in each coal stacking area, and the coal storage result of each coal stacking area is corrected according to the quality difference before and after the coal stacking.

[0122] Furthermore, a processing method for calculating the mass difference before and after coal loading of each coal loading area according to the coal counting results before and after the coal loading corresponding to each coal loading area is as follows: determining the height of the coal counting before and after scanning and the height of the coal counting corresponding to each coal loading area according to the coal counting results before and after scanning and the coal counting corresponding to each coal loading area; calculating the volume difference before and after coal loading of each coal loading area by using the volume difference formula according to the height of the coal counting before and after scanning and the height of the coal counting corresponding to each coal loading area; calculating the mass difference before and after coal loading of each coal loading area by using the mass difference formula according to the volume difference before and after coal loading and the volume block density.

[0123] In this embodiment, reference Figure 7 , Figure 7 Schematic diagram of the scanning result of the coal plate before the coal pile in the first embodiment of the coal yard stacking and reclaiming management method of the present invention. Figure 7 As shown by the solid line (one of the width direction and the length direction of the coal yard is taken, and the vertical axis is the height direction), taking the two-dimensional map as an example (which can be understood as a cross-section in the height direction of the coal yard); the scanning result of the coal pan after coal stacking is shown by the dotted line.

[0124] The total length of the coal pile in the length direction of the coal yard is X (i.e., the difference between the end position and the starting position: X = x1-x0). Differentiate it in the length direction and divide it into N segments, and the length of each segment is Δx = X / N. The total width of the coal pile in the width direction of the coal yard is Y (i.e., the difference between the end position and the starting position: Y = y1-y0). Differentiate it in the width direction and divide it into M segments, and the width of each segment is Δy = Y / M. i , width direction y j , the heights of the coal pan before and after the sweep are h ij With h ij ', then the volume of this volume block is: Δv ij =Δx·Δy·δh=Δx·Δy·(h ij '-h ij ). According to the coal yard management system and the coal quality of the pile, the density of each volume block is obtained as ρ ij , then the mass of this differential volume block is Δm ij =Δv ij ·ρ ij .

[0125] The volume difference formula is:

[0126]

[0127] In the formula, ΔV is the volume difference before and after coal is taken out of the pile, Δx is the length of each section in the length direction, Δy is the length of each section in the width direction, and h ij ' is the height of the coal pan after scanning, h ij It is the height of the coal pan before scanning;

[0128] The mass difference formula is:

[0129]

[0130] Where Δm is the mass difference before and after coal is taken from the pile, ρ ij is the volume density.

[0131] Since all the belt scales in the coal yard (coal stacking and coal feeding belt scales) have measurement errors, the coal stacking quantity in the coal yard can be further corrected in real time by scanning the coal pans before and after stacking, thereby improving the management accuracy of the coal yard, improving the measurement and tracking accuracy of the coal stacking quantity, and improving the efficiency and accuracy of production management.

[0132] Furthermore, the processing method for correcting the coal storage results of each coal-pile area according to the quality difference before and after coal-pile taking is to calculate the increase in coal-pile taking of each coal-pile area through the increase formula according to the quality difference before and after coal-pile taking and the flow of the coal-pile taking belt scale; the coal storage results of each coal-pile area are corrected according to the increase in coal-pile taking and the initial belt scale flow, and the initial belt scale flow is the belt scale flow obtained before coal piling or coal taking.

[0133] The increase formula is:

[0134] I=b1*F+b2*Δm

[0135] Where I is the increase in the amount of coal stacking, b1 is the belt weighing coefficient, F is the flow rate of the coal stacking belt scale, b2 is the stacking operation system coefficient, b1 and b2 are the calculated value coefficients of the belt weighing and coal taking operation system respectively, which are fixed values ​​and can be manually configured.

[0136] It should also be noted that after all coal stacking or coal taking operations are completed, the coal stacking or coal taking equipment is stopped.

[0137] In this embodiment, the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal-taking area in the coal yard are first determined, and then the matching similarity between the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal-taking area is calculated respectively. Then, according to the matching similarity, the multiple coal-taking areas are prioritized according to the regional output rule to obtain the coal-taking area sorting result. Then, based on the coal-taking area sorting result, the multiple coal-taking areas are stacked and operated according to the pre-pile coal quantity through the coal-taking equipment. Finally, after the stacking and operating is completed, the quality difference before and after the coal stacking of each coal-taking area is calculated according to the coal panning results before and after the coal stacking corresponding to each coal-taking area, and the coal storage result of each coal-taking area is corrected according to the quality difference before and after the coal stacking. Compared with the prior art, there is no case of complete systematic decision-making on coal stacking and unloading operations. In this embodiment, based on the fuel management platform, bucket wheel positioning, and automatic coal yard coal panning, the entire process of fuel stacking and unloading is automatically controlled, saying goodbye to the current status of manual empirical maintenance and operation, improving the quality of coal yard management, and reducing the risk of misoperation.

[0138] Reference Figure 8 , Figure 8 It is a structural block diagram of the first embodiment of the coal yard stacker and reclaimer management system of the present invention.

[0139] like Figure 8As shown, the coal yard stacking and reclaiming management system proposed in the embodiment of the present invention includes:

[0140] The determination module 8001 is used to determine the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard;

[0141] A matching module 8002 is used to calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity;

[0142] A sorting module 8003 is used to sort the priority of the plurality of coal-collecting areas according to the matching similarity from low to high, and obtain a sorting result of the coal-collecting areas;

[0143] The stacking module 8004 is used to perform stacking operations on multiple coal stacking areas through coal stacking equipment according to the pre-stacked coal quantity based on the sorting result of the coal stacking areas;

[0144] Correction module 8005 is used to calculate the quality difference before and after coal piling in each coal piling area according to the coal panning results before and after the coal piling in each coal piling area after the piling operation is completed, and to correct the coal storage results of each coal piling area according to the quality difference before and after the coal piling.

[0145] Other embodiments or specific implementations of the coal yard stacking and reclaiming management system of the present invention can refer to the above-mentioned method embodiments, which will not be described in detail here.

[0146] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0147] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory / random access memory, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0149] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for managing coal yard stacking and reclaiming, characterized in that: The coal yard stacking and reclaiming management method comprises the following steps: Determine the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard; Calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal taking area and the coal quality characteristic information of the pre-pile coal taking quantity; Prioritize the plurality of coal-collecting areas according to the matching similarity and the area output rule to obtain a coal-collecting area sorting result; Based on the sorting result of the coal piling and taking areas, a plurality of coal piling and taking areas are piled and taken by the coal piling and taking equipment according to the pre-pile and taken coal quantity; After completing the stacking operation, the quality difference of each coal stacking area before and after coal stacking is calculated according to the coal panning results before and after the corresponding coal stacking areas, and the coal storage results of each coal stacking area are corrected according to the quality difference before and after the coal stacking.

2. The method according to claim 1, characterized in that The step of respectively calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal taking quantity comprises: Calculate the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity by using a matching similarity algorithm; The coal quality characteristic information of the stored coal includes the calorific value of the stored coal, the volatile value of the stored coal, the sulfur content of the stored coal, the moisture content of the stored coal and the ash content of the stored coal; The pre-pile coal quantity includes the pre-pile coal quantity and the pre-taken coal quantity, the coal quality characteristic information of the pre-pile coal quantity includes the pre-pile coal calorific value, the pre-pile coal volatile value, the pre-pile coal sulfur content, the pre-pile coal moisture content and the pre-pile coal ash content, and the coal quality characteristic information of the pre-taken coal quantity includes the pre-taken coal calorific value, the pre-taken coal volatile value, the pre-taken coal sulfur content, the pre-taken coal moisture content and the pre-taken coal ash content; The matching similarity algorithm is: P=a1×(h2-h1)+a2×(v2-v1)+a3×(s2-s1)+a4×(w2-w1)+a5×(c2-c1) In the formula, P is the matching similarity, h2 is the calorific value of pre-pile coal or pre-taken coal, h1 is the calorific value of stored coal, v2 is the volatile value of pre-pile coal or pre-taken coal, v1 is the volatile value of stored coal, s2 is the sulfur content of pre-pile coal or pre-taken coal, s1 is the sulfur content of stored coal, w2 is the moisture content of pre-pile coal or pre-taken coal, w1 is the moisture content of stored coal, c2 is the ash content of pre-pile coal or pre-taken coal, and c1 is the ash content of stored coal.

3. The method according to claim 2, characterized in that The step of performing a stacking operation on a plurality of coal taking areas by using a coal taking device based on the sorting result of the coal taking areas and according to the pre-stacked coal taking amount comprises: Determine a region position corresponding to a first target coal-taking region from among a plurality of coal-taking regions based on the coal-taking region sorting result; According to the regional position, the moving distance and the cantilever swing angle are obtained by using a coal stacking and taking device, wherein the coal stacking and taking device is a bucket wheel machine of a strip coal yard; Based on the moving distance and the cantilever swing angle, the first target coal stacking area is stacked and taken by the bucket wheel excavator of the strip coal yard according to the pre-stacked coal amount.

4. The method according to claim 3, characterized in that The step of obtaining the moving distance and the cantilever swing angle by the coal stacking and taking equipment according to the regional position includes: Determine the first straight-line distance between the area position and the bucket wheel machine of the strip coal yard, and determine the swing arm distance according to the swing arm length of the bucket wheel machine and the maximum swing angle of the bucket wheel machine; Determining whether the first straight-line distance is greater than the swing arm distance; When the first straight-line distance is greater than the swing arm distance, the first straight-line distance is used as the moving distance, and the counterclockwise initial swing angle of the bucket wheel machine swing arm is used as the cantilever swing angle.

5. The method according to claim 4, characterized in that After the step of determining whether the first straight-line distance is greater than the arm swing distance, the method further includes: When the first straight line distance is less than or equal to the swing arm distance, the moving distance is zero; Obtaining the cantilever swing angle through a swing angle algorithm according to the first straight-line distance, the initial swing angle of the bucket wheel machine swing arm and the length of the bucket wheel machine swing arm; The swing angle algorithm is: α1-α1'=α1-arcsinL1 / H Where α1 is the initial swing angle of the bucket wheel machine's swing arm, α1' is the cantilever swing angle, L1 is the first straight line distance, and H is the length of the bucket wheel machine's swing arm.

6. The method according to claim 2, characterized in that The step of performing a stacking operation on a plurality of coal taking areas through a coal taking device based on the sorting result of the coal taking areas and the pre-stacked coal taking amount also includes: Determine a region position corresponding to a first target coal-taking region from among a plurality of coal-taking regions based on the coal-taking region sorting result; According to the rotation swing angle corresponding to the position of the area and the initial cantilever angle, a swing angle is obtained by using a coal stacking and taking device, wherein the coal stacking and taking device is a circular stacking machine of a circular coal yard; Based on the swing angle and the pre-piling coal quantity, a stacking operation is performed on the first target coal stacking area through a circular stacker of the circular coal yard.

7. The method according to any one of claims 1 to 6, characterized in that: After the step of performing a stacking operation on a plurality of coal taking areas by using a coal taking device based on the sorting result of the coal taking areas and according to the pre-stacked coal taking amount, the method further includes: When performing the extraction operation, the matching similarity between the coal quality characteristic information of the actual coal extraction amount and the coal quality characteristic information of the pre-extracted coal extraction amount corresponding to each coal extraction area is calculated by the matching similarity algorithm; If the matching similarity is greater than a preset threshold, it is determined that the coal quality deviation is too large, the coal taking operation is stopped, and the process returns to the step of calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal taking area and the coal quality characteristic information of the pre-pile coal taking quantity.

8. The method according to any one of claims 1 to 6, characterized in that: The step of respectively calculating the quality difference before and after coal extraction in each coal extraction area according to the coal panning results before and after coal extraction in each coal extraction area includes: Determine the height of the coal panning before and after scanning of each coal-taking area according to the coal panning results before and after scanning of each coal-taking area; The volume difference before and after coal collection in each coal collection area is calculated by using a volume difference formula according to the height of the coal pan corresponding to each coal collection area before and after coal collection; The volume difference formula is: In the formula, ΔV is the volume difference before and after coal is taken out of the pile, Δx is the length of each section in the length direction, Δy is the length of each section in the width direction, and h ij ' is the height of the coal pan after scanning, h ij is the height of the coal pan before scanning, N is the number of segments in the length direction, M is the number of segments in the width direction, x0 is the starting coordinate of the total length, x1 is the end coordinate of the total length, y0 is the starting coordinate of the total width, y1 is the end coordinate of the total width; Calculate the mass difference before and after coal removal in each coal removal area by using a mass difference formula according to the volume difference before and after coal removal and the volume block density; The mass difference formula is: Where Δm is the mass difference before and after coal is taken from the pile, ρ ij is the volume density.

9. The method according to claim 8, characterized in that The step of respectively correcting the coal storage results of each coal-taking area according to the quality difference before and after taking coal from the coal pile comprises: The increase in the amount of coal taken from each coal-taking area is calculated according to the quality difference before and after the coal-taking and the flow rate of the coal-taking belt scale through the increase formula; The increase formula is: I=b1*F+b2*Δm Where, I is the increase in the amount of coal taken from the pile, b1 is the belt weighing coefficient, F is the flow rate of the coal taking belt scale, and b2 is the coefficient of the pile taking operating system; The coal storage result of each coal-taking area is corrected according to the increased amount of coal-taking and the initial belt scale flow.

10. A coal yard stacking and reclaiming management system, characterized in that: The stacking and reclaiming management system of the coal yard includes: A determination module, used to determine the coal quality characteristic information of the stored coal quantity and the coal quality characteristic information of the pre-pile coal quantity corresponding to each coal taking area in the coal yard; A matching module, used for respectively calculating the matching similarity between the coal quality characteristic information of the stored coal quantity corresponding to each coal-taking area and the coal quality characteristic information of the pre-pile coal quantity; A sorting module is used to prioritize the multiple coal-collecting areas according to the matching similarity and the area output rule to obtain the coal-collecting area sorting result; A stacking and taking module, used for performing a stacking and taking operation on a plurality of coal stacking and taking areas through a coal stacking and taking device according to the pre-stacked coal amount based on the sorting result of the coal stacking and taking areas; The correction module is used to calculate the quality difference before and after coal piling in each coal piling area according to the coal panning results before and after the coal piling in each coal piling area after the piling operation is completed, and to correct the coal storage results of each coal piling area according to the quality difference before and after the coal piling.

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