A raw coal bunker anti-coal-breaking air cannon linkage method, device, equipment and medium

Abstract

This invention relates to the field of auxiliary equipment technology for boilers in thermal power plants, and particularly to a method, device, equipment, and medium for linking air cannons to prevent coal shortage in a raw coal bunker. The raw coal bunker supplies coal to a coal feeder. Multiple air cannons are installed corresponding to the raw coal bunker, and these multiple air cannons are interconnected. The method for linking the air cannons to prevent coal shortage in the raw coal bunker includes: during the operation of the coal feeder, activating the interlocking mechanism to put the multiple air cannons into operation; based on the multiple air cannons being in operation, obtaining the coal feed rate; and when the coal feed rate determines that the corresponding air cannon operating conditions are met, controlling the corresponding number of air cannons to operate. This invention can predict coal blockage trends in advance and enable automatic linkage and operation of the air cannons based on the coal feed rate, thus improving the situation of coal shortage in the coal feeder and reducing the probability of coal shortage caused by coal blockage, thereby ensuring stable boiler combustion and safe unit operation.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for boilers in thermal power plants, and in particular to a method, device, equipment and medium for linking air cannons to prevent coal shortage in raw coal bunkers. Background Technology

[0002] In actual operation, thermal power generating units typically burn a variety of coal types, and problems such as poor coal feeding and blockages can easily occur inside the raw coal bunker. This leads to frequent fluctuations in the coal feeder's output, and in severe cases, coal shortages. If coal shortages are not addressed promptly, they can not only cause unstable boiler combustion and exceed environmental limits, but may also lead to safety accidents such as boiler deflagration and fire suppression, directly threatening the safe and stable operation of the unit.

[0003] In existing technologies, raw coal bunkers are usually equipped with air cannons as auxiliary coal unloading equipment, but most of them are manually controlled and cannot be automatically triggered according to real-time changes in coal feed. This results in defects such as delayed response, cumbersome operation, and untimely coal unloading, which increases the probability of coal shortage accidents.

[0004] Therefore, developing a method to prevent coal shortage by automatically controlling the air cannon based on the coal feed rate, in order to reduce the probability of coal shortage accidents, is of great significance for ensuring the safe operation of thermal power units. Summary of the Invention

[0005] To solve the above-mentioned technical problems, or at least partially solve them, this invention provides a method, device, equipment, and medium for linking air cannons to prevent coal blockage in raw coal bunkers. By predicting the coal blockage trend in advance, the air cannons can be automatically linked and activated according to the coal feed rate, which can improve the situation of coal feeder interruption and reduce the probability of coal feeder interruption due to coal blockage, so as to ensure stable boiler combustion and safe operation of the unit.

[0006] In a first aspect, the present invention provides a method for linking air cannons to prevent coal shortage in a raw coal bunker, applied to a coal feeder. The raw coal bunker supplies coal to the coal feeder, and multiple air cannons are installed corresponding to the raw coal bunker, with the multiple air cannons being linked and interlocked. The method includes: During the operation of the coal feeder, the interlock is activated to put the multiple air cannons into operation. The coal feed rate is obtained based on the fact that the multiple air cannons are in operation. When the coal feed rate determines that the corresponding air cannon operating conditions are met, the corresponding number of air cannons are controlled to operate.

[0007] In some embodiments, when the coal feed rate determines that the corresponding air cannon operating conditions are met, controlling the operation of a corresponding number of air cannons includes: The coal feed rate is compared with a set number of coal feed rate thresholds; The corresponding number of air cannons are controlled to operate based on the comparison results.

[0008] In some embodiments, controlling the operation of a corresponding number of air cannons based on the comparison result includes: When the coal feed rate is less than the nearest coal feed rate threshold, the corresponding number of air cannons are controlled to operate according to the nearest coal feed rate threshold. There is a corresponding relationship between the coal feeding threshold and the number of times the air cannon operates; the smaller the coal feeding threshold, the greater the number of times the air cannon operates.

[0009] In some embodiments, the number of coal feed thresholds is equal to the number of air cannons.

[0010] In some embodiments, the method for linking air cannons to prevent coal shortage in raw coal bunkers further includes: When the coal feeder stops running, the interlocking mechanism is automatically released, causing the multiple air cannons to be taken out of service.

[0011] In some embodiments, the method for linking air cannons to prevent coal shortage in raw coal bunkers further includes: Obtain the operating status of the coal feeder; When the coal feeder malfunctions, the control alarm device will issue an alarm message.

[0012] In some embodiments, obtaining the coal feed rate includes: The coal feed rate is detected by a coal quantity monitoring sensor installed on the coal feeder.

[0013] Secondly, the present invention also provides a coal bunker anti-coal-cutoff air cannon linkage device, applied to a coal feeder, wherein the coal bunker supplies coal to the coal feeder, and multiple air cannons are installed corresponding to the coal bunker, and the multiple air cannons are linked and interlocked; the device includes: The activation module is used to activate the interlock during the operation of the coal feeder so that the plurality of air cannons are in the activated state. The acquisition module is used to acquire the coal feed rate based on the fact that the plurality of air cannons are in the activated state; The control module is used to control the corresponding number of air cannons to operate when the coal feed rate determines that the corresponding air cannon operating conditions are met.

[0014] Thirdly, the present invention also provides an electronic device, including a processor and a memory, wherein the processor executes the steps of the coal bunker anti-coal-cutoff air cannon linkage method as described in the first aspect by calling a program or instruction stored in the memory.

[0015] Fourthly, the present invention also provides a storage medium that stores a program or instructions that cause a computer to execute the steps of the coal bunker anti-coal-cutoff air cannon linkage method as described in the first aspect.

[0016] The technical solution provided by the embodiments of the present invention has the following advantages compared with the prior art: The coal feeder anti-coal-cutoff air cannon linkage method provided in this invention activates the linkage interlock during coal feeder operation, putting the air cannons into a standby state. By acquiring the coal feed rate in real time and matching the corresponding air cannon operating conditions according to the coal feed rate, precise control of the activation of the corresponding number of air cannons can be achieved, thereby reducing the probability of coal feeder cutoff due to coal blockage. This enables fully automatic linkage control, replacing manual operation and providing rapid response. Using the coal feed rate as a judgment criterion, it can predict coal blockage trends in advance, enabling automatic linkage activation and deactivation of air cannons based on the coal feed rate, thus improving the situation of coal feeder cutoff and reducing the probability of coal feeder cutoff due to coal blockage, thereby ensuring stable boiler combustion and safe unit operation. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A flowchart illustrating a method for linking air cannons to prevent coal shortage in a raw coal bunker, provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a coal bunker anti-coal-cutoff air cannon linkage device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0022] The coal bunker anti-coal-cutoff air cannon linkage method provided in this invention embodiment can realize fully automatic linkage control, replace manual operation, and respond quickly. Using the coal feed rate as the judgment basis, it can predict the coal blockage trend in advance, and realize the automatic linkage of air cannons to switch on and off according to the coal feed rate. It can improve the situation of coal feeder interruption, thereby reducing the probability of coal feeder interruption due to coal blockage, so as to ensure the stable combustion of boiler and safe operation of unit.

[0023] The following description, in conjunction with the accompanying drawings, provides an exemplary description of the coal bunker anti-coal-cutoff air cannon linkage method, device, equipment, and medium provided in the embodiments of the present invention.

[0024] Figure 1 This is a flowchart illustrating a method for linking air cannons to prevent coal shortage in a raw coal bunker, as provided in an embodiment of the present invention. This method is applied to a coal feeder, where the raw coal bunker supplies coal to the feeder. Multiple air cannons are installed corresponding to the raw coal bunker, and these air cannons are interconnected. This method can be executed by the raw coal bunker anti-coal shortage air cannon linkage device provided in this embodiment of the invention, which can be implemented using software and / or hardware. Figure 1 As shown, the method for linking air cannons to prevent coal shortage in the raw coal bunker includes the following steps: S101. During the operation of the coal feeder, the linkage interlock is activated to put the multiple air cannons into operation.

[0025] Specifically, multiple air cannons are linked and interlocked. When the interlocking is activated, the air cannons are put into a standby state. In this step, when the coal feeder starts running, the interlocking is activated to put the multiple air cannons into operation, that is, to put the air cannons into a standby state.

[0026] S102. Based on the fact that multiple air cannons are in operation, the coal feed rate is obtained.

[0027] Specifically, in this step, the coal feed rate is obtained, and the coal feed rate is used as a basis for judgment to predict the coal blockage trend in advance.

[0028] In some embodiments, obtaining the coal feed rate includes: The coal feed rate is detected by a coal quantity monitoring sensor installed on the coal feeder.

[0029] The coal quantity monitoring sensor can be a weighing sensor. Specifically, in this embodiment, the coal quantity monitoring sensor installed on the coal feeder is used to obtain the coal quantity in real time.

[0030] S103. When the working conditions of the corresponding air cannons are met based on the coal feed rate, control the corresponding number of air cannons to operate.

[0031] The operating conditions for the air cannons are preset conditions set based on the predicted coal feed rate, indicating the need to start the air cannons and the number of air cannons to start operating. When the corresponding operating conditions for the air cannons are met, it indicates that there is a predicted trend of coal blockage, and the corresponding number of air cannons are controlled to operate to eliminate the probability of coal feeder interruption due to coal blockage.

[0032] Specifically, in this step, based on the coal feed rate obtained in S102, when it is determined that the coal feed rate meets the corresponding air cannon operating conditions, the corresponding number of air cannons in the activated state are controlled to start working. Thus, by matching the corresponding air cannon operating conditions according to the coal feed rate, precise control of the activation of the corresponding number of air cannons can be achieved.

[0033] The coal feeder anti-coal-cutoff air cannon linkage method provided in this invention activates the linkage interlock during coal feeder operation, putting the air cannons into a standby state. By acquiring the coal feed rate in real time and matching the corresponding air cannon operating conditions according to the coal feed rate, precise control of the activation of the corresponding number of air cannons can be achieved, thereby reducing the probability of coal feeder cutoff due to coal blockage. This enables fully automatic linkage control, replacing manual operation and providing rapid response. Using the coal feed rate as a judgment criterion, it can predict coal blockage trends in advance, enabling automatic linkage activation and deactivation of air cannons based on the coal feed rate, thus improving the situation of coal feeder cutoff and reducing the probability of coal feeder cutoff due to coal blockage, thereby ensuring stable boiler combustion and safe unit operation.

[0034] In some embodiments, when the coal feed rate determines that the corresponding air cannon operating conditions are met, controlling the operation of a corresponding number of air cannons includes: The coal feed rate is compared with a set number of coal feed rate thresholds; Based on the comparison results, control the operation of the corresponding number of air cannons.

[0035] Specifically, the real-time coal feed rate is compared with multiple preset coal feed rate thresholds, and the comparison results are used as the basis to directly control the activation of the corresponding number of air cannons. Multiple coal feed rate thresholds are set for different coal blockage trends; the more severe the coal blockage, the smaller the set coal feed rate threshold.

[0036] Therefore, by setting multiple coal feeding thresholds and comparing the coal feeding rate with these thresholds, the coal blockage situation can be determined based on the comparison results.

[0037] In some embodiments, controlling the operation of a corresponding number of air cannons based on the comparison results includes: When the coal feed rate is less than the nearest coal feed rate threshold, the corresponding number of air cannons are controlled to operate according to the nearest coal feed rate threshold. There is a corresponding relationship between the coal feeding threshold and the number of times the air cannon operates; the smaller the coal feeding threshold, the greater the number of times the air cannon operates.

[0038] Specifically, in conjunction with the above embodiments, the smaller the coal feed threshold, the more severe the coal blockage. Based on this, the smaller the coal feed threshold, the greater the number of air cannons that can be used, thus effectively clearing coal from the raw coal bunker.

[0039] In some implementations, the number of coal feed thresholds can be set to be equal to the number of air cannons.

[0040] The following example illustrates the process using three air cannons and three coal feeding thresholds. The three coal feeding thresholds can be 20t / h, 10t / h, and 5t / h, respectively. Specifically, during the operation of the coal feeder, the coal feeding rate is acquired in real time. When the coal feeding rate is detected to be less than 20t / h, a tendency for coal blockage begins to appear. Since the blockage is initially minor, one air cannon is controlled to operate to clear coal from the raw coal bunker. When the coal feeding rate is detected to be less than 10t / h, it can be determined that the blockage is more severe, and two air cannons can be controlled to operate to clear coal from the raw coal bunker. When the coal feeding rate is detected to be less than 5t / h, it can be determined that the blockage is very severe, and three air cannons can be controlled to operate to clear coal from the raw coal bunker.

[0041] In some embodiments, the method for linking air cannons to prevent coal shortage in raw coal bunkers further includes: When the coal feeder stops running, the interlocking mechanism is automatically released, causing the multiple air cannons to be taken out of service.

[0042] Specifically, when the coal feeder stops running, the interlock is automatically released, all air cannons are deactivated, and automatic triggering is prohibited. This enhances safety interlock protection, completely preventing accidental spraying or activation of air cannons during shutdown, ensuring equipment and personnel safety. Furthermore, the fully automatic switching eliminates the need for manual operation, reducing the risk of human error and improving safety.

[0043] In some embodiments, the method for linking air cannons to prevent coal shortage in raw coal bunkers further includes: Obtain the operating status of the coal feeder; When the coal feeder malfunctions, the control alarm device will issue an alarm message.

[0044] Specifically, the operating status of the coal feeder is collected in real time. When a malfunction is detected in the coal feeder, such as an abnormal operation of the conveyor belt, the alarm device is controlled to issue an alarm message. For example, the alarm device can be an audible and visual alarm.

[0045] Therefore, by promptly alerting operators through alarms, faulty coal feeders can be addressed, reducing the risk of boiler combustion fluctuations and fire extinguishing caused by coal feeder malfunctions.

[0046] The coal feeder anti-coal-cutoff air cannon linkage method provided in this invention activates the linkage interlock during coal feeder operation, putting the air cannons into a standby state. By acquiring the coal feed rate in real time and matching the corresponding air cannon operating conditions according to the coal feed rate, precise control of the activation of the corresponding number of air cannons can be achieved, thereby reducing the probability of coal feeder cutoff due to coal blockage. This enables fully automatic linkage control, replacing manual operation and providing rapid response. Using the coal feed rate as a judgment criterion, it can predict coal blockage trends in advance, enabling automatic linkage activation and deactivation of air cannons based on the coal feed rate, thus improving the situation of coal feeder cutoff and reducing the probability of coal feeder cutoff due to coal blockage, thereby ensuring stable boiler combustion and safe unit operation.

[0047] Based on the same inventive concept, this embodiment of the invention also provides a coal bunker anti-coal-cutoff air cannon linkage device, applied to a coal feeder. The coal bunker supplies coal to the coal feeder, and multiple air cannons are set up corresponding to the coal bunker, and the multiple air cannons are linked and interlocked.

[0048] Figure 2 This is a schematic diagram of a coal bunker anti-coal-cutoff air cannon linkage device provided in an embodiment of the present invention. Figure 2 As shown, the device includes: an activation module 21, used to activate the interlocking mechanism during the operation of the coal feeder to put the plurality of air cannons into operation; an acquisition module 22, used to acquire the coal feed rate based on the plurality of air cannons being in operation; and a control module 23, used to control at least one of the plurality of air cannons in operation when the coal feed rate determines that the working conditions of the air cannons are met.

[0049] In some embodiments, the control module 23 is specifically used for: The coal feed rate is compared with a set number of coal feed rate thresholds; The corresponding number of air cannons are controlled to operate based on the comparison results.

[0050] In some embodiments, the control module 23 is specifically used for: When the coal feed rate is less than the nearest coal feed rate threshold, the corresponding number of air cannons are controlled to operate according to the nearest coal feed rate threshold. There is a corresponding relationship between the coal feeding threshold and the number of times the air cannon operates; the smaller the coal feeding threshold, the greater the number of times the air cannon operates.

[0051] The coal bunker anti-coal-cutoff air cannon linkage device provided in the above embodiments can perform the coal bunker anti-coal-cutoff air cannon linkage method provided in the above embodiments, and has the same or corresponding beneficial effects, which will not be described in detail here.

[0052] This invention also provides a storage medium that stores a program or instruction, which causes a computer to execute the steps of the coal bunker anti-coal-cutoff air cannon linkage method provided in the above embodiments.

[0053] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this 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. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0054] Based on the above embodiments, this invention also provides an electronic device. Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Figure 3 As shown, the electronic device includes a processor 401 and a memory 402. The processor 401 executes programs or instructions stored in the memory, such as... Figure 1 The steps of the method for linking air cannons to prevent coal shortage in a raw coal bunker, as described in the above embodiment, have the beneficial effects of the above embodiment, and will not be repeated here.

[0055] like Figure 3 As shown, an electronic device may include at least one processor 401, at least one memory 402, and at least one communication interface 403. The various components in the electronic device are coupled together via a bus system 404. The communication interface 403 is used for information transmission with external devices. It is understood that the bus system 404 is used to implement communication between these components. In addition to a data bus, the bus system 404 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 3The general designated all buses as Bus System 404.

[0056] It is understood that the memory 402 in this embodiment can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. In some embodiments, the memory 402 stores the following elements: executable units or data structures, or subsets thereof, or extended sets thereof, operating systems, and applications. In this embodiment of the invention, the processor 401 executes the steps of the various embodiments of the method provided in this embodiment of the invention by calling the programs or instructions stored in the memory 402.

[0057] The method provided in this embodiment of the invention can be applied to processor 401, or implemented by processor 401. Processor 401 can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by integrated logic circuits in the hardware of processor 401 or by instructions in software form. The processor 401 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor can be a microprocessor or any conventional processor.

[0058] The steps of the method provided in this embodiment of the invention can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software units in the decoding processor. The software units can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 402, and processor 401 reads the information in memory 402 and combines it with its hardware to complete the steps of the method.

[0059] The electronic device may also include one or more physical components to execute instructions generated by the processor 401 when performing the methods provided in this embodiment of the invention. Different physical components may be located within the electronic device or outside the electronic device, such as a cloud server. Each physical component, together with the processor 401 and the memory 402, works to realize the functions of the electronic device in this embodiment.

[0060] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the foregoing inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions as those in the present invention.

Claims

1. A raw coal bunker anti-coal breaking air cannon linkage method, characterized in that, Applied to a coal feeder, the raw coal bunker supplies coal to the coal feeder, and multiple air cannons are installed corresponding to the raw coal bunker, with the multiple air cannons being interconnected; the method includes: During the operation of the coal feeder, the interlock is activated to put the multiple air cannons into operation. The coal feed rate is obtained based on the fact that the multiple air cannons are in operation. When the coal feed rate determines that the corresponding air cannon operating conditions are met, the corresponding number of air cannons are controlled to operate.

2. The raw coal bunker anti-coal-breaking air cannon linkage method according to claim 1, characterized in that, When the coal feed rate determines that the corresponding air cannon operating conditions are met, the corresponding number of air cannons are controlled to operate, including: The coal feed rate is compared with a set number of coal feed rate thresholds; The corresponding number of air cannons are controlled to operate based on the comparison results.

3. The raw coal bunker anti-breaking coal air cannon linkage method according to claim 2, characterized in that, Based on the comparison results, control the operation of a corresponding number of air cannons, including: When the coal feed rate is less than the nearest coal feed rate threshold, the corresponding number of air cannons are controlled to operate according to the nearest coal feed rate threshold. There is a corresponding relationship between the coal feeding threshold and the number of times the air cannon operates; the smaller the coal feeding threshold, the greater the number of times the air cannon operates.

4. The raw coal bunker anti-breaking coal air cannon linkage method according to claim 3, characterized in that, The number of coal feed thresholds is equal to the number of air cannons.

5. The raw coal bunker anti-coal-breaking air cannon linkage method according to claim 1, characterized in that, Also includes: When the coal feeder stops running, the interlocking mechanism is automatically released, causing the multiple air cannons to be taken out of service.

6. The raw coal bunker anti-breaking coal air cannon linkage method according to claim 1, characterized in that, Also includes: Obtain the operating status of the coal feeder; When the coal feeder malfunctions, the control alarm device will issue an alarm message.

7. The raw coal bunker anti-breaking coal air cannon linkage method according to claim 1, characterized in that, Obtaining the coal feed rate includes: The coal feed rate is detected by a coal quantity monitoring sensor installed on the coal feeder.

8. A raw coal bunker anti-coal breaking air cannon linkage device, characterized in that, Applied to a coal feeder, the raw coal bunker supplies coal to the coal feeder, and multiple air cannons are installed corresponding to the raw coal bunker, with the multiple air cannons being interconnected; the device includes: The activation module is used to activate the interlock during the operation of the coal feeder so that the plurality of air cannons are in the activated state. The acquisition module is used to acquire the coal feed rate based on the fact that the plurality of air cannons are in the activated state; The control module is used to control the corresponding number of air cannons to operate when the coal feed rate determines that the corresponding air cannon operating conditions are met.

9. An electronic device, comprising: It includes a processor and a memory, wherein the processor executes the steps of the coal bunker anti-coal-cut-off air cannon linkage method as described in any one of claims 1 to 7 by calling the program or instructions stored in the memory.

10. A storage medium, characterized by The storage medium stores a program or instructions that cause a computer to perform the steps of the coal bunker anti-coal-cutoff air cannon linkage method as described in any one of claims 1 to 7.

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