Cross coal blending method and device, storage medium and computer program product

Abstract

The invention discloses a cross coal blending method and device, a storage medium and a computer program product, and relates to the technical field of coal blending, the cross coal blending method and device are applied to a coal blending system, the coal blending system comprises a plurality of coal bunkers and a coal blending device, the plurality of coal bunkers comprise a first coal bunker and a second coal bunker, the first coal bunker stores a first type of coal, and the second coal bunker stores a second type of coal; the first coal bunker is used for storing first type coal, the second coal bunker is used for storing second type coal, the coal blending device comprises a third coal feeder and a fourth coal feeder, and the method comprises the following steps: when a preset first condition is met, the first type coal in the first coal bunker is transported to a second coal mill through the third coal feeder; and when a preset second condition is met, the second type of coal in the second coal bunker is conveyed into the first coal mill through the fourth coal feeder, and the coal blending accuracy can be improved.

Description

Technical Field

[0001] This application relates to the technical field of coal blending, and particularly to a cross coal blending method, device, storage medium, and computer program product. Background Art

[0002] In a thermal power generating unit, the coal blending method of the coal blending system is a key link affecting the operation efficiency and fuel economy of the unit. However, the traditional coal blending method is relatively crude and has low accuracy.

[0003] The above content is only used to assist in understanding the technical solution of this application, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of this application is to provide a cross coal blending method, device, storage medium, and computer program product, aiming to solve the technical problem that the traditional coal blending method is relatively crude and has low accuracy.

[0005] To achieve the above purpose, this application proposes a cross coal blending method applied to a coal blending system. The coal blending system includes several coal bins and a coal blending device. The several coal bins include a first coal bin and a second coal bin. The first coal bin stores coal of a first type, and the second coal bin stores coal of a second type. The coal blending device includes a third coal feeder and a fourth coal feeder. The method includes at least one of the following:

[0006] When a preset first condition is met, the coal of the first type in the first coal bin is transported to a second coal mill through the third coal feeder;

[0007] When a preset second condition is met, the coal of the second type in the second coal bin is transported to a first coal mill through the fourth coal feeder.

[0008] In an embodiment, the coal blending device further includes a first coal feeder and a second coal feeder. Before the method, it includes:

[0009] Transport the coal of the first type in the first coal bin to the first coal mill through the first coal feeder;

[0010] Transport the coal of the second type in the second coal bin to the second coal mill through the second coal feeder.

[0011] In an embodiment, the step of when a preset first condition is met, transporting the coal of the first type in the first coal bin to the second coal mill through the third coal feeder includes:

[0012] When the coal blending device is at the peak load regulation, open the first two-way pneumatic slide gate at the inlet of the third coal feeder and the second two-way pneumatic slide gate at the outlet of the third coal feeder;

[0013] Transport the high-quality coal in the first coal bunker to the second coal mill through the opened first double-direction pneumatic slide gate, the third coal feeder, and the opened second double-direction pneumatic slide gate.

[0014] In one embodiment, the step of transporting the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder when a preset second condition is met includes:

[0015] When the coal blending device is at a non-peak load regulation state, open the third double-direction pneumatic slide gate at the inlet of the fourth coal feeder and the fourth double-direction pneumatic slide gate at the outlet of the fourth coal feeder;

[0016] Transport the inferior coal in the second coal bunker to the first coal mill through the opened third double-direction pneumatic slide gate, the fourth coal feeder, and the opened fourth double-direction pneumatic slide gate.

[0017] In one embodiment, the coal blending device further includes a clog clearing machine, and the method further includes:

[0018] When receiving an automatic intervention signal, detect whether the inlet valve reaches a preset open state, where the inlet valve is arranged between the clog clearing machine and the first coal feeder and / or the fourth coal feeder;

[0019] If not, control the clog clearing machine to stop;

[0020] If so, control the clog clearing machine to start in an automatic mode, where the automatic mode includes a coal interruption start mode and an intermittent start mode.

[0021] In one embodiment, after controlling the clog clearing machine to start in an automatic mode includes:

[0022] Control the motor and / or drive device of the clog clearing machine to reverse until a preset first time is reached or a reverse limit device is triggered.

[0023] When the reverse rotation of the motor and / or drive device stops and a preset second time is reached, control the motor and / or drive device to rotate forward until a preset third time is reached or a forward rotation limit device is triggered;

[0024] When the forward rotation of the motor and / or drive device stops and a preset fourth time is reached, control the motor and / or drive device to reverse;

[0025] When receiving a stop signal, control the clog clearing machine to stop;

[0026] When the clog clearing machine stops for a preset fifth time, control the motor and / or drive device to rotate forward, and control the clog clearing machine to stop when it rotates forward to a fixed stop position.

[0027] In one embodiment, when the automatic mode is the coal interruption start mode, the controlling the clog clearing machine to start in the automatic mode includes:

[0028] When it is detected that the corresponding coal feeder is in the operating state and a coal interruption signal is received, control the clog clearing machine to start;

[0029] When the coal interruption signal is not received, control the clog clearing machine to stop after running for a preset time period.

[0030] In one embodiment, when the automatic mode is the intermittent start mode, the controlling the clog clearing machine to start in the automatic mode includes:

[0031] When it is detected that the corresponding coal feeder is in the operating state and the coal interruption signal is not received, control the clog clearing machine to start at a preset time period;

[0032] If the coal interruption signal is received during the preset time period interval, control the clog clearing machine to switch to the coal interruption start mode for operation, and when it is detected that the clog clearing machine stops running, control the clog clearing machine to switch back to the intermittent start mode.

[0033] In addition, to achieve the above object, the present application also proposes a cross - coal - blending device, the device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program is configured to implement the steps of the cross - coal - blending method as described above.

[0034] In addition, to achieve the above object, the present application also proposes a storage medium, the storage medium is a computer - readable storage medium, a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the cross - coal - blending method as described above are implemented.

[0035] In addition, to achieve the above object, the present application also provides a computer program product, the computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the cross - coal - blending method as described above are implemented.

[0036] One or more technical solutions proposed by the present application have at least the following technical effects:

[0037] When a preset first condition is satisfied, the present application transports the first type of coal in the first coal bunker to the second coal mill through the third coal feeder; when a preset second condition is satisfied, the present application transports the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder. Thus, the cross - coal - blending method of the present application has the ability of two - way coal blending, can improve the accuracy of coal blending, and meet the requirements of burning as much low - calorie coal and increasing the proportion of sludge blending as possible. Brief Description of the Drawings

[0038] The drawings herein are incorporated into and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0039] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic flowchart provided for the first embodiment of the cross-blending coal method of the present application;

[0041] Figure 2 It is a front view structural schematic diagram of the coal blending device in the cross-blending coal method of the present application;

[0042] Figure 3 It is a side view structural schematic diagram of the clog clearing machine in the cross-blending coal method of the present application;

[0043] Figure 4 It is a top view structural schematic diagram of the clog clearing machine in the cross-blending coal method of the present application;

[0044] Figure 5 It is a device structure schematic diagram of the hardware operating environment involved in the cross-blending coal method in the embodiments of the present application.

[0045] Explanation of the reference numerals in the drawings:

[0046]

[0047]

[0048] The realization of the purpose, functional features, and advantages of the present application will be further described with reference to the embodiments and the drawings. Detailed Embodiments

[0049] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0050] To better understand the technical solutions of the present application, the following will be described in detail with reference to the drawings in the specification and the specific embodiments.

[0051] The main solution of the embodiments of the present application is: when a preset first condition is met, the first type of coal in the first coal bunker is transported to the second coal mill through the third coal feeder; when a preset second condition is met, the second type of coal in the second coal bunker is transported to the first coal mill through the fourth coal feeder.

[0052] In this embodiment, for the convenience of description, the coal blending system is used as the execution subject for the following elaboration.

[0053] In a thermal power generating unit, the coal blending method of the coal blending system is a key link affecting the unit operation efficiency and fuel economy. However, the traditional coal blending method is relatively crude and has low accuracy.

[0054] This application provides a solution. When a preset first condition is met, this application transports the first type of coal in the first coal bunker to the second coal mill through the third coal feeder; when a preset second condition is met, this application transports the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder. Thus, the cross coal blending method of this application has the ability of two-way coal blending, which can improve the accuracy of coal blending and meet the requirements of burning as much ultra-low calorific value coal and increasing the proportion of sludge co-firing as possible.

[0055] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a cross coal blending device, etc. that can implement the above functions, or an electronic system, a coal blending system, etc. that can implement the above functions. Taking the coal blending system as an example, this embodiment and the following embodiments will be described below.

[0056] The existing coal blending systems currently have disadvantages such as poor flexibility in coal type co-firing and poor equipment reliability, and it is necessary to study the cross coal blending method between adjacent raw coal bunkers to improve the flexibility and reliability of the coal blending system.

[0057] Based on this, the embodiment of this application provides a cross coal blending method, referring to Figure 1 , Figure 1 which is the flow schematic diagram provided for the first embodiment of the cross coal blending method of this application.

[0058] In this embodiment, applied to the coal blending system, the coal blending system includes a plurality of coal bunkers and a coal blending device. The plurality of coal bunkers include a first coal bunker and a second coal bunker. The first coal bunker stores the first type of coal, and the second coal bunker stores the second type of coal. The coal blending device includes a third coal feeder and a fourth coal feeder. The cross coal blending method includes steps S1 to S4:

[0059] Step S1, transport the first type of coal in the first coal bunker to the first coal mill through the first coal feeder;

[0060] Step S2, transport the second type of coal in the second coal bunker to the second coal mill through the second coal feeder;

[0061] Among them, the coal blending device can refer toFigure 2 , Figure 2 This is the front view structural schematic diagram of the coal blending device in the cross-coal blending method of this application. The coal blending device includes a first coal feeder 13, a second coal feeder 23, a third coal feeder 12, and a fourth coal feeder 22. The first coal feeder 13 is arranged between the first coal bunker 11 and the first coal mill, and is used to transport the coal in the first coal bunker 11 to the first coal mill. The second coal feeder 23 is arranged between the second coal bunker 21 and the second coal mill, and is used to transport the coal in the second coal bunker 21 to the second coal mill. The third coal feeder 12 is arranged between the first coal bunker 11 and the second coal mill, and is used to transport the coal in the first coal bunker 11 to the second coal mill. The fourth coal feeder 22 is arranged between the second coal bunker 21 and the first coal mill, and is used to transport the coal in the second coal bunker 21 to the first coal mill.

[0062] In an embodiment, the first type of coal can be high-quality coal, and the second type of coal can be low-quality coal. Among them, the first coal mill can only process high-quality coal, and the second coal mill can only process low-quality coal.

[0063] Step S3, when the preset first condition is met, transport the first type of coal in the first coal bunker to the second coal mill through the third coal feeder;

[0064] Step S4, when the preset second condition is met, transport the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder.

[0065] Among them, adding a third coal feeder between the first coal bunker and the second coal mill, and / or adding a fourth coal feeder between the second coal bunker and the first coal mill, so as to realize the interconnection of coal feeding between the first coal bunker and the second coal bunker, that is, equivalent to a 2×2 coal feeding change.

[0066] As an implementation method, when the first coal bunker stores high-calorie coal and the second coal bunker stores low-calorie coal, the coal stored in the second coal bunker can be supplied to the first coal mill under low-load conditions, and this technical solution can adjust the combustion coal type in a timely, accurate, and reliable manner, save the consumption of high-calorie coal while ensuring that the unit load is not affected, so as to reduce the fuel cost.

[0067] It should be noted that the low-load condition refers to the state where the generator set operates below its rated load or design load. Specifically, the low-load condition usually shows that the output power of the unit is low and the demand for coal decreases. The common scenarios of the low-load condition are generally the low-demand period of electricity, the startup or shutdown process of the unit, etc.

[0068] This embodiment provides a method for cross-blending coal. When the preset first condition is met, the present application transports the first type of coal in the first coal bunker to the second coal mill through the third coal feeder; when the preset second condition is met, the present application transports the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder. Thus, the cross-blending coal method of the present application has the ability of two-way coal blending, which can improve the accuracy of coal blending and meet the requirements of burning as much low-calorie coal as possible and increasing the proportion of sludge co-firing.

[0069] Based on Embodiment 1 of the present application, in Embodiment 2 of the present application, the same or similar content as that in the above Embodiment 1 can be referred to the above introduction and will not be repeated hereinafter. On this basis, in step S3, when the preset first condition is met, transporting the first type of coal in the first coal bunker to the second coal mill through the third coal feeder further includes steps S31 to S32:

[0070] Step S31, when the coal blending device is at the peak load regulation, open the first two-way pneumatic slide gate at the inlet of the third coal feeder and the second two-way pneumatic slide gate at the outlet of the third coal feeder;

[0071] Step S32, transport the high-quality coal in the first coal bunker to the second coal mill through the opened first two-way pneumatic slide gate, the third coal feeder, and the opened second two-way pneumatic slide gate.

[0072] Among them, both the first coal bunker and the second coal bunker can be used as peak load regulation bins separately, storing high-quality coal and low-quality coal respectively. According to the needs, the operator can provide different types of raw coal to the coal feeder to improve the flexibility of the coal mill.

[0073] When the first coal bunker stores high-quality coal, due to its characteristics such as high calorific value, low ash content, and low sulfur content, it can release more heat during combustion, has a high combustion efficiency, and low pollutant emissions. Therefore, high-quality coal is suitable for use during peak demand periods, which can ensure the efficient and stable operation of the unit under high load conditions and meet the peak load regulation requirements of the power grid.

[0074] When the second coal bunker stores low-quality coal, due to its characteristics such as low calorific value, high ash content, and high sulfur content, it releases less heat during combustion, has a relatively low combustion efficiency, and high pollutant emissions. However, the cost of low-quality coal is relatively low, and it is suitable for use during low demand periods or under low load conditions, which can effectively reduce the fuel cost. At the same time, through optimizing the combustion ratio and emission control technology, the economy and environmental protection performance of the unit can be ensured.

[0075] Among them, when the coal blending device is at the peak load regulation, that is, when the power demand reaches the peak, it is necessary to increase the power generation output to meet the demand. At this time, the high-quality coal in the first coal bunker can be used because of its high combustion efficiency and ability to release more heat, which can meet the peak demand.

[0076] When the coal blending device is at the peak load of regulation, high-quality coal stored in the first coal bunker can be conveyed to above the second coal mill through the third coal feeder.

[0077] Specifically, open the first double-direction pneumatic slide gate and the second double-direction pneumatic slide gate, and the reciprocating coal feeder runs from the first coal bunker to the second coal mill, that is, the high-quality coal in the first coal bunker passes through the first double-direction pneumatic slide gate → the reciprocating coal feeder → the second double-direction pneumatic slide gate → above the second coal mill to convey the high-quality coal.

[0078] In the embodiment of the present application, by conveying the high-quality coal in the first coal bunker to the second coal mill when at the peak load of regulation, the combustion efficiency and output of the boiler can be rapidly improved to meet the high-load demand of the power grid.

[0079] Based on Embodiment 1 of the present application, in Embodiment 3 of the present application, the same or similar content as that in the above Embodiment 1 can be referred to the above introduction and will not be elaborated hereinafter. On this basis, when step S4 meets the preset second condition, transporting the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder further includes steps S41 to S42:

[0080] Step S41, when the coal blending device is at a non-peak load of regulation, open the third double-direction pneumatic slide gate at the inlet of the fourth coal feeder and the fourth double-direction pneumatic slide gate at the outlet of the fourth coal feeder;

[0081] Step S42, transport the low-quality coal in the second coal bunker to the first coal mill through the opened third double-direction pneumatic slide gate, the fourth coal feeder, and the opened fourth double-direction pneumatic slide gate.

[0082] It should be noted that when the coal blending device is at a non-peak load of regulation, at this time the power demand is low, only the base load needs to be met without peak regulation, and the low-quality coal in the second coal bunker can be used. Because its calorific value is low, it is suitable for use at low demand, and high-quality coal can be saved.

[0083] When the coal blending device is at a non-peak load of regulation, in the embodiment of the present application, by conveying the low-quality coal stored in the second coal bunker to the first coal mill, the blending amount of low-quality coal in the coal mill can be increased and high-quality coal can be saved.

[0084] Based on Embodiment 1 of the present application, in Embodiment 4 of the present application, the same or similar content as that in the above Embodiment 1 can be referred to the above introduction and will not be elaborated hereinafter. On this basis, the coal blending device further includes a plug cleaning machine, which can be referred to Figure 3 , Figure 3This is a schematic side view structure of the clog clearing machine in the cross-blending coal method of this application. The clog clearing machine mainly adopts a modular design and is mainly composed of three parts: the upper bin body 2, the rotary assembly 3, the lower bin body 4, and the modified gate valve 5. Refer to Figure 4 , Figure 4 This is a schematic top view structure of the clog clearing machine in the cross-blending coal method of this application. Driven by the rotary assembly 3, the three-dimensional variable cross-section rotary scraper built in the clog clearing machine rotates along the bin wall of the upper bin body and / or the lower bin body. The material adhered to the bin wall of the upper bin body and / or the lower bin body is completely and thoroughly separated from the bin wall under the forced action of the three-dimensional variable cross-section rotary scraper. Under the action of gravity, the material completely falls. The rotation of the three-dimensional variable cross-section rotary scraper built in the clog clearing machine forms a flow assistance for the material far from the central area in the bin, increasing the flow rate of the raw material far from the center of the coal bin, changing the flow of the raw material in the bin from a central flow to an overall flow, fundamentally eliminating the basis for coal bridging and arching in the upper part of the coal bin, making it impossible to form. The built-in three-dimensional variable cross-section rotary scraper can regularly clean the bin wall to prevent sticking and blockage.

[0085] As an implementation method, the clog clearing machine can be a rotary cutting type raw coal bin clog clearing machine, which is suitable for clog clearing and anti-blocking of material coal bins in industries such as electric power, metallurgy, chemical industry, and paper making, and can solve the blockage of various material coal bins and conveying pipelines.

[0086] The working modes of the coal blending device include a local control mode and a remote control mode. The method further includes steps A1 to A2:

[0087] Step A1, when the coal blending device is in the local control mode and receives a preset external signal, the coal blending device operates according to the preset external signal.

[0088] Further, when receiving a preset external signal, the operation of the coal blending device according to the preset external signal includes steps A11 to A13:

[0089] Step A11, if a coal feeder operation signal and a clog clearing machine operation signal are received, control the coal feeder to operate and control the clog clearing machine to operate based on a preset first time;

[0090] Among them, when the coal feeder and the clog clearing machine need to operate simultaneously, the coal blending device will start the coal feeder and let the clog clearing machine operate for a period of time (the first time) to ensure the smooth operation of the coal bin and anti-blocking treatment.

[0091] Step A12, when a coal feeder stop signal is received, control the coal feeder and the clog clearing machine to stop; among them, when the coal feeder stops operating, the clog clearing machine also needs to stop because the function of the clog clearing machine is to assist the coal feeder operation and prevent coal blockage. If the coal feeder stops, the clog clearing machine does not need to continue operating.

[0092] Further, after step A12, steps A121 to A127 are also included:

[0093] Step A121, when the blockage clearing machine stops at the designated position and receives the inlet valve opening signal, control the inlet valve to open until the inlet valve touches the first open limit switch;

[0094] It should be noted that the blockage clearing machine stopping at the designated position means that the blockage clearing machine stops at a preset fixed position.

[0095] Among them, the inlet valve is a valve installed at the entrance of the equipment or pipeline, used to control the entry of materials.

[0096] Among them, the first open limit switch is a sensor installed on the inlet valve, used to detect whether the inlet valve is opened as required by the preset.

[0097] Step A122, when receiving the inlet valve closing signal, control the inlet valve to close until the inlet valve touches the first close limit switch;

[0098] Among them, the first close limit switch is a sensor installed on the inlet valve, used to detect whether the inlet valve is closed as required by the preset.

[0099] Step A123, monitor the opening time and / or closing time of the inlet valve. If the opening time of the inlet valve exceeds the preset first opening time and / or the closing time of the inlet valve exceeds the preset first closing time, a fault alarm is issued;

[0100] Among them, the coal blending device will monitor the opening and closing times of the inlet valve. If the time exceeds the preset value, it indicates that the valve may be stuck or malfunction, and the coal blending device will issue an alarm.

[0101] Step A124, when receiving the air hammer knocking signal, control the air hammer to knock on the preset part of the coal blending device;

[0102] Among them, when it is necessary to clear the blocked coal, the coal blending device will control the air hammer to knock on a specific part of the coal blending device to loosen the blocked coal.

[0103] Step A125, when receiving the outlet valve opening signal, control the outlet valve to open until the outlet valve touches the second open limit switch;

[0104] Among them, the outlet valve is a valve installed at the outlet of the equipment or pipeline, used to control the discharge of materials.

[0105] Step A126, when receiving the outlet valve closing signal, control the outlet valve to close until the outlet valve touches the second close limit switch;

[0106] Step A127, monitor the opening time and / or closing time of the outlet valve. If the opening time of the outlet valve exceeds the preset second opening time and / or the closing time of the outlet valve exceeds the preset second closing time, a fault alarm is issued.

[0107] For example, after the coal feeder runs, the user can press the start button of the clog clearing machine, and the clog clearing machine runs for a limited time of 15 minutes (factory setting). If the coal feeder stops, the clog clearing machine stops immediately.

[0108] When the coal feeder is not running and the user presses the start button of the clog clearing machine, the clog clearing machine runs for a limited time and stops after running for 2 minutes (factory setting).

[0109] When the clog clearing machine stops in place, the user presses the "Manual Open Valve" button to control the opening of the inlet valve, and the inlet valve stops when it touches the first open limit switch. The user presses the "Manual Close Valve" button to control the closing of the inlet valve, and the inlet valve stops when it touches the first close limit switch. If the valve opening / closing times out, a fault alarm is issued, and the alarm automatically resets after 3 seconds and the valve can be opened / closed again.

[0110] The user presses the "Air Hammer" button, and each time it is pressed, the corresponding air hammer strikes once.

[0111] The user presses the "Manual Open Valve" button to control the opening of the outlet valve, and the outlet valve stops when it touches the second open limit switch. The user presses the "Manual Close Valve" button to control the closing of the outlet valve, and the outlet valve stops when it touches the second close limit switch. If the valve opening / closing times out, a fault alarm is issued, and the alarm automatically resets after 3 seconds and the valve can be opened / closed again.

[0112] Step A13, if the coal feeder operation signal is not received and the clog clearing machine operation signal is received, control the operation of the clog clearing machine based on a preset second time.

[0113] Wherein, when the coal feeder is not running but the clog clearing machine needs to run, the coal distribution device allows the clog clearing machine to run alone for a period of time (the second time) to prevent coal bin blockage or handle possible coal blockage problems.

[0114] Step A2, when the coal distribution device is in the remote control mode and receives a signal sent by the remote control system, the coal distribution device operates according to the signal sent by the remote control system.

[0115] Further, Step A2 further includes Steps A21 to A26:

[0116] Step A21, when receiving a start signal sent by the remote control system, control the operation of the clog clearing machine;

[0117] Step A22, when receiving a stop signal sent by the remote control system, control the clog clearing machine to stop;

[0118] Step A23: When the blockage clearing machine stops stably in place and receives the inlet valve opening signal sent by the remote control system, control the opening of the inlet valve.

[0119] Step A24: When receiving the inlet valve closing signal sent by the remote control system, control the closing of the inlet valve.

[0120] Step A25: When receiving the outlet valve opening signal sent by the remote control system, control the opening of the outlet valve.

[0121] Step A26: When receiving the outlet valve closing signal sent by the remote control system, control the closing of the outlet valve.

[0122] Among them, the remote control system refers to an automated system for remotely monitoring and operating the equipment operation, which usually conducts data exchange and control instruction transmission with on-site equipment through a communication network (such as industrial Ethernet, wireless network, etc.). Through the remote control system, remote operation of the blockage clearing machine and valves can be realized, improving the operation efficiency and safety.

[0123] The cross coal blending method further includes steps S5 - S7:

[0124] Step S5: When receiving the automatic intervention signal, detect whether the inlet valve reaches the preset opening state, and the inlet valve is arranged between the blockage clearing machine and the first coal feeder and / or the fourth coal feeder.

[0125] Step S6: If not, control the blockage clearing machine to stop.

[0126] Step S7: If so, control the blockage clearing machine to start in the automatic mode, and the automatic mode includes a coal interruption start mode and an intermittent start mode.

[0127] Among them, when the coal blending device receives the automatic intervention signal (such as a blockage detection signal or a remote control signal), it first detects the opening state of the inlet valve and judges whether it reaches the preset opening condition (such as fully open or partially open), thereby ensuring that the inlet valve is in the correct opening state and providing necessary material conveying conditions for the operation of the blockage clearing machine.

[0128] Specifically, the opening state of the inlet valve can be monitored in real time through a position sensor or a valve state feedback device, and the detection result is transmitted to the coal blending device. If it is detected that the inlet valve does not reach the preset opening state, the blockage clearing machine is controlled to stop running, avoiding operating the blockage clearing machine when the inlet valve is not fully open, and preventing equipment damage or poor blockage clearing effect caused by unsmooth material conveying.

[0129] If it is detected that the inlet valve has reached the preset opening state, control the blockage clearing machine to start in the automatic mode. The automatic mode includes the following two types:

[0130] 1. Coal interruption start mode: When the coal interruption signal is detected, the clog clearing machine starts immediately. After the coal interruption signal disappears, the clog clearing machine runs for a certain period of time with a time delay and then stops.

[0131] 2. Intermittent start mode: When the coal interruption signal is not detected, the clog clearing machine starts periodically at a preset time interval to prevent blockage.

[0132] The operation mode of the clog clearing machine can be flexibly selected according to actual needs to ensure the clog clearing effect and the stable operation of the equipment.

[0133] In the embodiment of the present application, by automatically detecting the status of the inlet valve and selecting the operation mode, the intelligent control of the clog clearing machine is realized, and the manual intervention is reduced. The embodiment of the present application also provides a coal interruption start mode and an intermittent start mode, which can adapt to different operating conditions and requirements and optimize the clog clearing effect.

[0134] Based on the first embodiment of the present application, in the second embodiment of the present application, for the same or similar content as that in the above-mentioned first embodiment, reference can be made to the above introduction and will not be repeated hereinafter. On this basis, after step S7, controlling the clog clearing machine to start in the automatic mode, steps S8 to S12 are further included:

[0135] Step S8, controlling the motor and / or the driving device of the clog clearing machine to reverse until a preset first time is reached or the reverse limit device is touched;

[0136] Among them, the motor or the driving device of the clog clearing machine is started to run in the reverse direction (usually counterclockwise). The reverse operation will continue until a preset first time (such as 150 seconds) is reached or the reverse limit device (such as a mechanical limit switch) is touched.

[0137] Step S9, when the motor and / or the driving device stops reversing and reaches a preset second time, controlling the motor and / or the driving device to rotate forward until a preset third time is reached or the forward limit device is touched;

[0138] Among them, after the reverse stops, wait for a preset second time (such as 6 seconds), and then start the motor or the driving device to run in the forward direction (usually clockwise). The forward operation will continue until a preset third time (such as 150 seconds) is reached or the forward limit device is touched.

[0139] Step S10, when the motor and / or the driving device stops rotating forward and reaches a preset fourth time, controlling the motor and / or the driving device to reverse;

[0140] Among them, after the forward stop, wait for a preset fourth time (such as 6 seconds), and then start the motor or the driving device again to run in the reverse direction.

[0141] Step S11: When a stop signal is received, control the clog clearing machine to stop;

[0142] Among them, during the forward or reverse rotation, if a stop signal (such as a remote control signal or an emergency stop signal) is received, immediately control the clog clearing machine to stop running.

[0143] Step S12: When the clog clearing machine has stopped for a preset fifth time, control the motor and / or the driving device to rotate forward. When it rotates forward to the fixed stop position, control the clog clearing machine to stop.

[0144] Among them, after the clog clearing machine stops running, wait for a preset fifth time (such as 3 seconds), then start the motor or the driving device to make it run in the forward direction until it reaches the fixed stop position (such as the preset stop position) and then stops.

[0145] For example, after the clog clearing machine starts, it starts to rotate in reverse. It rotates in reverse for 150 seconds or stops when touching the reverse limit device. After a 6-second delay, it starts to rotate forward. It rotates forward for 150 seconds or stops when touching the forward limit device. After a 6-second delay, it rotates in reverse again. During the forward and reverse rotation processes, if a stop signal is input, the device stops. After a 3-second delay, it starts to rotate forward. When it rotates forward to the fixed stop position, the clog clearing machine stops.

[0146] In the embodiment of the present application, through the preset time and the feedback signal of the limit device, the automatic operation of the clog clearing machine is realized, reducing manual intervention. Moreover, in the present application, through the alternating operation of forward and reverse rotations, the blockage can be effectively removed or the material conveying effect can be optimized.

[0147] Based on Embodiment 4 of the present application, in Embodiment 6 of the present application, the same or similar content as that in Embodiment 4 above can be referred to the above introduction and will not be repeated hereinafter. On this basis, when the automatic mode is the coal interruption start mode, in step S7, controlling the clog clearing machine to start in the automatic mode includes steps S711 to S712:

[0148] Step S711: When it is detected that the corresponding coal feeder is in the running state and a coal interruption signal is received, control the clog clearing machine to start;

[0149] Among them, when the automatic mode is the coal interruption start mode, the coal distribution device first detects whether the corresponding coal feeder is in the running state. If the coal feeder is running and a coal interruption signal (such as a coal flow interruption signal) is received, immediately control the clog clearing machine to start.

[0150] Step S712: When the coal interruption signal is not received, control the clog clearing machine to stop running after a preset time of delay.

[0151] Among them, during the operation of the clog clearing machine, if the coal distribution device does not detect a coal interruption signal (that is, the coal flow resumes normal), control the clog clearing machine to continue running for a preset time (such as 3 minutes), and then stop running.

[0152] For example, if a coal feeding signal is input when the coal feeder is in operation, the clog clearing machine is immediately started. After the coal feeding signal disappears, the clog clearing machine runs for 3 minutes with a time delay and then stops.

[0153] When the embodiment of the present application detects a coal feeding signal, it can immediately start the clog clearing machine, quickly resume the normal conveyance of the coal flow, and reduce the downtime. Moreover, by running with a time delay for a preset time, the present application ensures that the blockage is completely cleared and avoids repeated occurrence of problems.

[0154] Based on Embodiment 6 of the present application, in Embodiment 7 of the present application, for the same or similar content as that in Embodiment 6 above, reference can be made to the above introduction and will not be elaborated hereinafter. On this basis, when the automatic mode is the intermittent start mode, in step S7, controlling the clog clearing machine to start in the automatic mode includes steps S721 to S722:

[0155] Step S721, when it is detected that the corresponding coal feeder is in operation and no coal feeding signal is received, control the clog clearing machine to start at a preset time period;

[0156] Among them, when the automatic mode is the intermittent start mode, the coal distribution device first detects whether the corresponding coal feeder is in operation. If the coal feeder is running and no coal feeding signal is detected (i.e., the coal flow is normal), then control the clog clearing machine to start and run at a preset time period (such as every 30 minutes).

[0157] Step S722, if the coal feeding signal is received during the preset time period interval, control the clog clearing machine to switch to the coal feeding interruption start mode for operation. When it is detected that the clog clearing machine stops running, control the clog clearing machine to switch back to the intermittent start mode.

[0158] Among them, during the operation interval of the intermittent start mode, if the coal distribution device detects a coal feeding signal (such as a coal flow interruption signal), immediately control the clog clearing machine to switch to the coal feeding interruption start mode for operation. In the coal feeding interruption start mode, the clog clearing machine runs continuously until the coal feeding signal disappears and stops with a time delay. After the clog clearing machine stops running, the system switches it back to the intermittent start mode.

[0159] As an implementation manner, when the coal feeder is in operation and no coal feeding interruption occurs, the clog clearing machine runs once every once in a while to prevent coal blockage. If a coal feeding signal is input during the intermittent stop period, the clog clearing machine starts according to the coal feeding interruption mode and returns to the intermittent start mode again after the operation stops.

[0160] The embodiment of the present application automatically controls the start, stop, and mode switching of the clog clearing machine according to the state of the coal feeder, the coal feeding signal, and the preset time period, reduces manual intervention, and improves the operation efficiency.

[0161] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the cross-blending coal method of this application. Based on this technical concept, more forms of simple transformations are within the protection scope of this application.

[0162] This application provides a cross-blending coal device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the cross-blending coal method in the first embodiment above.

[0163] Next, refer to Figure 5 , which shows a schematic structural diagram of a cross-blending coal device suitable for implementing the embodiments of this application. The cross-blending coal device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The cross-blending coal device shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of this application.

[0164] As Figure 5As shown, the cross-coal blending equipment may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which may perform various appropriate actions and processes according to the program stored in the read-only memory 1002 or the program loaded from the storage device 1003 into the random access memory 1004. In the random access memory 1004, various programs and data required for the operation of the device are also stored. The processing device 1001, the read-only memory 1002, and the random access memory 1004 are connected to each other through a bus 1005. The input / output interface 1006 is also connected to the bus. Generally, the following systems may be connected to the input / output interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the cross-coal blending equipment to communicate with other devices wirelessly or wireline to exchange data. Although the cross-coal blending equipment with various systems is shown in the figure, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems may be implemented or had alternatively.

[0165] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from the network through the communication device, or installed from the storage device 1003, or installed from the read-only memory 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0166] The cross-coal blending equipment provided in the present application adopts the cross-coal blending method in the above embodiments, and can solve the technical problems that the traditional coal blending method is relatively extensive and the accuracy is not high. Compared with the prior art, the beneficial effects of the cross-coal blending equipment provided in the present application are the same as those of the cross-coal blending method provided in the above embodiments, and other technical features in the cross-coal blending equipment are the same as the features disclosed in the method of the previous embodiment, and will not be elaborated here.

[0167] It should be understood that the various parts disclosed in the present application may be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0168] As described above, it is only the specific implementation manner of the present application. However, the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

[0169] The present application provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the cross-coal blending method in the above embodiments.

[0170] The computer-readable storage medium provided by the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0171] The above computer-readable storage medium may be included in the cross-coal blending device; or it may exist separately and not be assembled into the cross-coal blending device.

[0172] The above computer-readable storage medium carries one or more programs. When the one or more programs are executed by the cross-coal blending device, the cross-coal blending device is caused to: transport the first type of coal in the first coal bunker to the first coal mill through the first coal feeder; transport the second type of coal in the second coal bunker to the second coal mill through the second coal feeder; when a preset first condition is satisfied, transport the first type of coal in the first coal bunker to the second coal mill through the third coal feeder; and when a preset second condition is satisfied, transport the second type of coal in the second coal bunker to the first coal mill through the fourth coal feeder.

[0173] Computer program code for performing the operations of the present application can be written in one or more programming languages or combinations thereof. The above-mentioned programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN: Local Area Network) or a wide area network (WAN: Wide Area Network), or it can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0174] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0175] The modules described in the embodiments of the present application can be implemented in software or in hardware. Among them, the name of the module does not constitute a limitation on the unit itself in some cases.

[0176] The readable storage medium provided by the present application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for performing the above-mentioned cross-blending coal method, and can solve the technical problems of the traditional coal blending method being relatively rough and having low accuracy. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as those of the cross-blending coal method provided by the above embodiments, and will not be elaborated here.

[0177] The present application also provides a computer program product, including a computer program, which when executed by a processor implements the steps of the cross-coal blending method as described above.

[0178] The computer program product provided by the present application can solve the technical problems of the traditional coal blending method being relatively crude and having low accuracy. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as those of the cross-coal blending method provided by the above embodiments, and will not be elaborated here.

[0179] The above are only some embodiments of the present application, and thus do not limit the patent scope of the present application. Any equivalent structural transformation made under the technical concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A cross-matching coal blending method, characterized in that, Applied to a coal blending system, the coal blending system includes a number of coal bunkers and a coal blending device. The number of coal bunkers includes a first coal bunker and a second coal bunker. The first coal bunker stores coal of a first type, and the second coal bunker stores coal of a second type. The coal blending device includes a third coal feeder and a fourth coal feeder. The method includes at least one of the following: When a preset first condition is met, transport the coal of the first type in the first coal bunker to the second coal mill through the third coal feeder; When a preset second condition is met, transport the coal of the second type in the second coal bunker to the first coal mill through the fourth coal feeder.

2. The method according to claim 1, wherein The coal blending device further includes a first coal feeder and a second coal feeder. Before the method, it includes: Transport the coal of the first type in the first coal bunker to the first coal mill through the first coal feeder; Transport the coal of the second type in the second coal bunker to the second coal mill through the second coal feeder.

3. The method according to claim 1, wherein The step of, when a preset first condition is met, transporting the coal of the first type in the first coal bunker to the second coal mill through the third coal feeder includes: When the coal blending device is at the peak load of regulation, open the first two-way pneumatic slide gate at the inlet of the third coal feeder and the second two-way pneumatic slide gate at the outlet of the third coal feeder; Transport the high-quality coal in the first coal bunker to the second coal mill through the opened first two-way pneumatic slide gate, the third coal feeder, and the opened second two-way pneumatic slide gate.

4. The method according to claim 1, wherein The step of, when a preset second condition is met, transporting the coal of the second type in the second coal bunker to the first coal mill through the fourth coal feeder includes: When the coal blending device is not at the peak load of regulation, open the third two-way pneumatic slide gate at the inlet of the fourth coal feeder and the fourth two-way pneumatic slide gate at the outlet of the fourth coal feeder; Transport the low-quality coal in the second coal bunker to the first coal mill through the opened third two-way pneumatic slide gate, the fourth coal feeder, and the opened fourth two-way pneumatic slide gate.

5. The method according to claim 1, wherein The coal blending device further includes a clog clearing machine. After the method, it further includes: When an automatic intervention signal is received, detect whether the inlet valve has reached a preset opening state. The inlet valve is arranged between the clog clearing machine and the first coal feeder and / or the fourth coal feeder; If not, control the clog clearing machine to stop; If so, control the clog clearing machine to start in an automatic mode. The automatic mode includes a coal interruption start mode and an intermittent start mode.

6. The method according to claim 5, characterized in that, When the automatic mode is the coal interruption start mode, the control of starting the clog clearing machine in the automatic mode includes: When it is detected that the corresponding coal feeder is in an operating state and a coal interruption signal is received, control the clog clearing machine to start; When the coal interruption signal is not received, control the clog clearing machine to stop after running for a preset time with a time delay.

7. The method according to claim 6, wherein When the automatic mode is the intermittent start mode, the control of starting the clog clearing machine in the automatic mode includes: When it is detected that the corresponding coal feeder is in an operating state and the coal interruption signal is not received, control the clog clearing machine to start at a preset time period; If the coal interruption signal is received during the preset time period interval, control the clog clearing machine to switch to the coal interruption start mode for operation. When it is detected that the clog clearing machine stops running, control the clog clearing machine to switch back to the intermittent start mode.

8. A cross-coal blending device, characterized in that, The device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the cross-coal distribution method according to any one of claims 1 to 7.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the cross-coal distribution method according to any one of claims 1 to 7 are implemented.

10. A computer program product, characterized in that, The computer program product includes a computer program. When the computer program is executed by a processor, the steps of the cross-coal distribution method according to any one of claims 1 to 7 are implemented.

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