Boiler low-load operation methods and devices, electronic equipment and storage media

Abstract

This disclosure discloses a method and apparatus for operating a boiler at low load, electronic equipment, and storage medium. Because it can accurately acquire the operating parameters of the boiler under low load conditions and adjust the operating status of the combustion equipment accordingly to optimize combustion conditions and accurately stabilize the boiler's low load combustion state, it can solve the technical problems of deterioration of combustion conditions, unstable combustion requiring oil injection for combustion assistance, inaccurate air volume measurement, improper control of pulverized coal fineness exacerbating combustion fluctuations, and limited minimum stable combustion load of the unit during deep peak shaving of existing boilers at low loads. It achieves the technical effects of reducing the stable combustion load of the boiler, realizing stable oil-free combustion, reducing operating costs, expanding the deep peak shaving range of the unit, and ensuring the safety and economy of boiler operation at low loads.

Description

Technical Field

[0001] This disclosure relates to the field of data processing technology, and in particular to a method and apparatus for operating a boiler at low load, electronic equipment, and storage medium. Background Technology

[0002] With the increasing demand for deep peak shaving from the power grid, boiler units need to operate frequently under low-load conditions. When existing boilers operate at low loads, combustion instability often occurs due to deteriorating combustion conditions, requiring oil injection for combustion assistance. This not only increases operating costs but also limits the unit's minimum stable combustion load. Furthermore, inaccurate airflow measurement and improper control of pulverized coal fineness in traditional methods further exacerbate combustion fluctuations under low loads, making it difficult to achieve safe and economical deep peak shaving. Summary of the Invention

[0003] This disclosure provides a method, apparatus, electronic equipment, and storage medium for operating a boiler at low load.

[0004] According to a first aspect of this disclosure, a method for operating a boiler at low load is provided, comprising:

[0005] Obtain the boiler's operating parameters under low load conditions; Adjust the operating status of the boiler's combustion equipment according to the aforementioned operating parameters; Based on the adjusted combustion conditions, the boiler load is reduced until the target stable combustion load is reached, and stable combustion is maintained under the target stable combustion load.

[0006] Optionally, obtaining the boiler's operating parameters under low-load conditions includes: The primary air velocity and inlet air volume of the coal mill are measured, and the corresponding air volume measuring device is calibrated based on the measurement results.

[0007] Optionally, the measurement of the primary air velocity and inlet air volume of the coal mill includes: The primary air velocity at the outlet of the coal mill is measured to obtain the calibration coefficients used to calibrate the primary air velocity measuring device; The actual air volume at the coal mill inlet is calculated based on the primary wind speed to calibrate the coefficient of the coal mill inlet air volume measuring device.

[0008] Optionally, adjusting the operating status of the boiler's combustion equipment includes: Adjust the opening of the separator baffle of the coal mill.

[0009] Optionally, adjusting the operating status of the boiler's combustion equipment includes: Adjust the combination of coal mills put into operation.

[0010] Optionally, reducing the boiler load until the target stable combustion load is reached based on the adjusted combustion conditions includes: Reduce the boiler load step by step according to the preset load reduction range; The system operates stably for a preset time at each load level, and the combustion status is monitored. When the boiler load is reduced to the target stable combustion load, it shall maintain operation for a period of time not less than the preset duration.

[0011] According to a second aspect of this disclosure, a boiler low-load operation device is provided, comprising: The acquisition unit is used to acquire the operating parameters of the boiler under low load conditions. An adjustment unit is used to adjust the operating status of the boiler's combustion equipment according to the operating parameters. The control unit is used to reduce the boiler load until a target stable combustion load is reached based on the adjusted combustion conditions, and to maintain stable combustion under the target stable combustion load.

[0012] Optionally, the acquisition unit is further configured to: The primary air velocity and inlet air volume of the coal mill are measured, and the corresponding air volume measuring device is calibrated based on the measurement results.

[0013] Optionally, the acquisition unit is further configured to: The primary air velocity at the outlet of the coal mill is measured to obtain the calibration coefficients used to calibrate the primary air velocity measuring device; The actual air volume at the coal mill inlet is calculated based on the primary wind speed to calibrate the coefficient of the coal mill inlet air volume measuring device.

[0014] Optionally, the adjustment unit is further configured to: Adjust the opening of the separator baffle of the coal mill.

[0015] Optionally, the adjustment unit is further configured to: Adjust the combination of coal mills put into operation.

[0016] Optionally, the control unit is further configured to: Reduce the boiler load step by step according to the preset load reduction range; The system operates stably for a preset time at each load level, and the combustion status is monitored. When the boiler load is reduced to the target stable combustion load, it shall maintain operation for a period of time not less than the preset duration.

[0017] According to a third aspect of this disclosure, an electronic device is provided, comprising: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect above.

[0018] According to a fourth aspect of this disclosure, a non-transitory computer-readable storage medium is provided storing computer instructions, wherein the computer instructions are configured to cause the computer to perform the method described in the first aspect above.

[0019] According to a fifth aspect of this disclosure, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0020] The boiler low-load operation method, apparatus, electronic equipment, and storage medium provided in this disclosure can accurately acquire the operating parameters of the boiler under low-load operation and adjust the operating status of the combustion equipment accordingly to optimize the combustion conditions and accurately stabilize the boiler's low-load combustion state. Therefore, it can solve the technical problems of deterioration of combustion conditions, unstable combustion requiring oil injection for combustion assistance, inaccurate air volume measurement, improper control of pulverized coal fineness exacerbating combustion fluctuations, and limited minimum stable combustion load of the unit during deep peak shaving of existing boilers under low load. It achieves the technical effects of reducing the boiler's stable combustion load, realizing oil-free stable combustion, reducing operating costs, expanding the deep peak shaving range of the unit, and ensuring the safety and economy of boiler operation under low load.

[0021] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0022] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein: Figure 1 This is a schematic flowchart illustrating a method for operating a boiler at low load, as provided in an embodiment of this disclosure. Figure 2 A schematic diagram of a boiler low-load operation device provided in an embodiment of this disclosure; Figure 3 A schematic block diagram of an example electronic device provided for embodiments of this disclosure. Detailed Implementation

[0023] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0024] The following description, with reference to the accompanying drawings, outlines a method, apparatus, electronic device, and storage medium for operating a boiler at low load according to embodiments of the present disclosure.

[0025] Figure 1 This is a schematic flowchart illustrating a method for operating a boiler at low load, as provided in an embodiment of this disclosure.

[0026] like Figure 1 As shown, the method includes the following steps: Step 101: Obtain the operating parameters of the boiler under low load conditions; Boiler low-load operation refers to the condition where the actual operating load of the boiler is lower than the conventional rated operating load. This condition is a common occurrence during the deep peak shaving process of the boiler. Under this condition, the combustion stability of the boiler is easily affected by various factors, making it particularly important to accurately obtain the operating parameters under this condition.

[0027] The operating parameters include key data reflecting the overall combustion status and operating status of each piece of equipment when the boiler is under low load conditions. These include air volume and velocity data related to the operation of the coal mill, fineness data related to the characteristics of pulverized coal, stable combustion capability data related to the operation of the burner, nozzle flame temperature data, as well as various combustion data inside the furnace and a series of core data such as boiler steam parameters and heating surface tube wall temperature.

[0028] When obtaining these operating parameters, it is necessary to rely on corresponding professional measuring devices and sampling and analysis equipment to carry out data collection and testing in a standardized manner when the boiler is in a stable low-load operating state. This ensures that the collected operating parameters are authentic and valid. At the same time, all types of data collected must be recorded in real time and completely to avoid data loss or deviation. This provides comprehensive, accurate and referable data for subsequent work such as air volume calibration, wind speed adjustment, pulverized coal fineness optimization, mill commissioning mode adaptation, and stable combustion test, ensuring the orderly progress of the boiler's low-load refined operation adjustment work.

[0029] Step 102: Adjust the operating status of the boiler's combustion equipment according to the operating parameters; Combustion equipment includes various core supporting equipment for boiler pulverization and combustion, covering key equipment such as coal mill related operating components, separators, and burners. Adjustment operations must be carried out in an orderly manner based on the specific operating conditions of various equipment reflected in the operating parameters. In combination with various key information reflected in the parameters, such as the operating deviation of coal mill air volume and wind speed, the actual state of coal powder fineness, and the matching degree between coal mill operation combination and burner stable combustion capability, corresponding adjustments should be made to different combustion equipment.

[0030] To address deviations in the airflow and velocity parameters related to the coal mill, the inlet airflow control status of the coal mill was adjusted, and the operating status of the primary airflow regulating device was calibrated. To address the compatibility issues reflected in the coal powder fineness parameters, the operating status of the separator was adjusted. To address the matching parameters between the coal mill commissioning combination and the burner operating status, the commissioning method of the coal mill was adjusted, and the operating status of the burner was optimized.

[0031] Throughout the adjustment process, it is necessary to monitor the dynamic changes of operating parameters in real time to control the adjustment range and actual effect of the combustion equipment. This ensures that the adjusted operating status of the combustion equipment can accurately adapt to the low-load operating requirements of the boiler, improve the coordination and rationality of the operation of various combustion equipment, improve the overall combustion conditions of the boiler under low load, lay a solid foundation for the stable combustion effect of the boiler during the low-load stage, and at the same time enable the combustion equipment to maintain a highly efficient and stable operating state under low-load conditions, thus assisting in the refined operation adjustment during the deep peak shaving process of the boiler.

[0032] Step 103: Based on the adjusted combustion conditions, reduce the boiler load until the target stable combustion load is reached, and maintain stable combustion under the target stable combustion load.

[0033] During the process of reducing boiler load, it is necessary to rely on the stable combustion conditions after adjustment to proceed smoothly. The load should be gradually reduced in a reasonable manner to avoid the impact of sudden increases or decreases in load on the combustion reaction in the furnace. The ignition state and combustion rhythm of the fuel in the furnace should be controlled at all times to ensure the operational stability of the boiler combustion system throughout the entire load reduction process.

[0034] Once the boiler load gradually decreases to the preset target stable combustion load, it is necessary to immediately maintain this load level and not continue to lower it. The focus should be on maintaining stable combustion under the target stable combustion load. During this process, it is necessary to continuously monitor various combustion-related states inside the furnace, control the dynamic operation of the combustion system in real time, and ensure that the combustion reaction inside the furnace can proceed continuously and stably without any abnormalities such as combustion fluctuations or flameout.

[0035] Throughout the entire process of load reduction and stable combustion maintenance, it is necessary to continuously monitor the changes in various core operating parameters of the boiler, dynamically and promptly control the combustion status based on the parameters, ensure that the boiler can maintain stable combustion for a long period of time under the target stable combustion load, and effectively achieve the goal of refined stable combustion operation of the boiler under low load conditions.

[0036] In some embodiments, obtaining the boiler's operating parameters under low-load conditions includes: The primary air velocity and inlet air volume of the coal mill are measured, and the corresponding air volume measuring device is calibrated based on the measurement results.

[0037] Primary air velocity is the flow velocity of the primary air conveying pulverized coal at the coal mill outlet, and inlet air volume is the actual flow rate of air entering the coal mill. Both are important parameters that directly reflect the operating status of the coal mill. Related measurement work must be carried out in a standardized manner under the condition that the boiler is in hot operation. The primary air velocity measuring device at the coal mill outlet is operated to conduct on-site testing of the primary air velocity. At the same time, combined with the actual measurement results of the primary air velocity, the actual air volume at the coal mill inlet is calculated through professional calculation. The operation of the measurement link is strictly controlled throughout the process to ensure that the measurement data of primary air velocity and inlet air volume are true and accurate.

[0038] The airflow measurement device is a specialized piece of equipment used to detect the inlet airflow of a coal mill. Based on the measured primary velocity data and the calculated actual inlet airflow, the device is calibrated to determine its corresponding calibration coefficients. This process simultaneously calibrates the coal mill inlet airflow measurement coefficients, optimizing the device's detection accuracy. Throughout the measurement and calibration process, meticulous real-time recording and repeated verification of every data point are essential to prevent measurement deviations or calibration errors. This ensures the accuracy and validity of the coal mill's primary velocity and inlet airflow data, allowing the calibrated device to continuously and stably output reliable airflow data during subsequent boiler operation. This provides precise data on coal mill airflow and velocity for targeted adjustments to the combustion equipment's operating status.

[0039] In some embodiments, measuring the primary velocity and inlet air volume of the coal mill includes: The primary air velocity at the outlet of the coal mill is measured to obtain the calibration coefficients used to calibrate the primary air velocity measuring device; The actual air volume at the coal mill inlet is calculated based on the primary wind speed to calibrate the coefficient of the coal mill inlet air volume measuring device.

[0040] When measuring the primary air velocity and inlet air volume of a coal mill, it is necessary to follow the standard operating procedure step by step. First, a precise on-site measurement of the primary air velocity at the coal mill outlet should be carried out. The actual data of the primary air velocity at the coal mill outlet should be obtained through professional measurement methods. Then, based on the actual measurement results, professional calculations should be performed to determine the calibration coefficient that can be used to calibrate the primary air velocity measuring device.

[0041] After measuring the primary air velocity at the coal mill outlet and determining the corresponding calibration coefficients, the obtained actual primary air velocity data is used as the core calculation basis. The actual air volume at the coal mill inlet is accurately calculated through an appropriate calculation method. This actual air volume reflects the true data of the coal mill's air intake conditions. Then, using the calculated actual air volume at the coal mill inlet as a calibration reference, targeted calibration operations are carried out on the coefficients of the coal mill inlet air volume measuring device to complete the accurate calibration of the device's measurement coefficients.

[0042] Throughout the entire measurement and calibration process, it is essential to ensure real-time data acquisition and complete recording at each step, strictly control the standardization of operations, and guarantee the accuracy of the primary wind speed measurement data and the calculation results of the actual inlet air volume. This will allow the calibrated primary wind speed measurement device and inlet air volume measurement device to maintain high detection accuracy, and ensure that the output air volume and wind speed related data can accurately reflect the actual operating status of the coal mill, providing reliable coal mill operating data support for subsequent adjustments to the operating status of boiler combustion equipment.

[0043] In some embodiments, adjusting the operating status of the boiler's combustion equipment includes: Adjust the opening of the separator baffle of the coal mill.

[0044] In the process of adjusting the operating status of the boiler's combustion equipment, making targeted adjustments to the opening of the separator baffle of the coal mill is a key operation to optimize the characteristics of pulverized coal to meet the low-load combustion requirements of the boiler. This operation can directly change the separation and grinding effect of pulverized coal in the coal mill, precisely control the fineness of pulverized coal, and make the produced pulverized coal more suitable for the combustion characteristics of the boiler under low-load conditions.

[0045] The separator baffle is a core component in the coal mill that regulates the efficiency of coal powder separation. Its opening directly affects the flow path and screening effect of coal powder in the separator. Changes in the opening directly determine the fineness of the coal powder discharged from the coal mill. When the separator baffle is properly closed, coarse coal powder will be brought back to the grinding area of ​​the coal mill for secondary grinding, ultimately making the coal powder produced by the coal mill finer. Finer coal powder has better ignition and combustion characteristics, making it easier to ignite and burn more completely under low boiler load conditions, thus improving the boiler combustion conditions from the source of coal powder.

[0046] When adjusting the separator damper opening, it is necessary to rely on the boiler's low-load operating parameters obtained in the early stage, combined with the calorific value of the coal fed into the furnace, the estimated coal quantity of a single coal mill under low load based on the boiler's electrical load, and the sampling analysis results of the coal powder fineness under the original damper opening. The operation should be carried out gradually to reduce the opening. During the adjustment process, it is necessary to track the changes in coal powder fineness in real time and accurately control the adjustment range of the damper to ensure that the adjusted separator damper opening allows the coal mill to continuously produce coal powder that meets the boiler's low-load stable combustion requirements, making the ignition and combustion process of the coal powder more stable. This optimizes the overall combustion conditions of the boiler from the perspective of coal powder characteristics, laying a solid foundation for the subsequent smooth reduction of the boiler load to the target stable combustion load and the maintenance of stable combustion.

[0047] In some embodiments, adjusting the operating status of the boiler's combustion equipment includes: Adjust the combination of coal mills put into operation.

[0048] Adjusting the combination of coal mills in operation during the process of adjusting the operating status of the boiler's combustion equipment is an important operation to optimize the overall operational coordination of the combustion equipment under low load conditions. This operation can ensure that the operation status of the coal mills is highly compatible with the working requirements of the burners and the low-load combustion conditions of the boiler.

[0049] The combination of coal mills refers to the number of coal mills actually put into operation and the specific arrangement of the operation positions. Different coal mill combinations will directly affect the fuel supply status of the burner, which in turn will have a direct effect on the burner's stable combustion capability and nozzle flame temperature. At the same time, it will also be related to changes in key operating indicators such as SCR inlet flue gas temperature, boiler steam parameters, and heating surface tube wall temperature.

[0050] When adjusting the combination of coal mills, it is necessary to rely on the low-load operating parameters of the boiler obtained in the early stage, and combine the working status of the burner and the combustion situation in the furnace reflected by various parameters. A comprehensive analysis of the operating performance of the boiler’s core indicators under different coal mill combination methods should be conducted. Based on this, the coal mills put into operation should be reasonably combined and adjusted, and the coal mill operation mode suitable for the low-load operating conditions of the boiler should be selected.

[0051] During the adjustment process, it is necessary to monitor the dynamic changes of various operating parameters in real time, accurately control the rhythm and magnitude of the coal mill combination adjustment, and ensure that the adjusted coal mill combination can make the fuel supply of the burner more stable, keep the nozzle flame temperature within a reasonable range, and at the same time keep the SCR inlet flue gas temperature, steam parameters and heating surface tube wall temperature within the normal operating range, improve the overall operational adaptability of the combustion equipment, and enable the boiler to form a more stable low-load combustion condition, providing a solid equipment operation guarantee for the subsequent smooth reduction of boiler load to the target stable combustion load and the maintenance of stable combustion.

[0052] In some embodiments, reducing the boiler load until the target stable combustion load is reached based on the adjusted combustion conditions includes: Reduce the boiler load step by step according to the preset load reduction range; The system operates stably for a preset time at each load level, and the combustion status is monitored. When the boiler load is reduced to the target stable combustion load, it shall maintain operation for a period of time not less than the preset duration.

[0053] When reducing the boiler load based on the adjusted combustion conditions until the target stable combustion load is reached, it is necessary to follow the principle of smooth and orderly operation and carry out the operation step by step. First, the boiler load should be reduced step by step according to the pre-set load reduction range. The method of reducing the load drastically at once should be abandoned. The load should be reduced gradually at a preset reasonable range. This can effectively avoid the violent impact of sudden load changes on the stable combustion reaction in the furnace, prevent abnormal situations such as unstable combustion and flame fluctuations due to sudden load drop, and ensure the overall stability of the boiler combustion system throughout the load reduction process.

[0054] After each load reduction is completed, the boiler must be kept in stable operation at that load level for a pre-set time. This stable operation time allows sufficient space for monitoring the combustion status. During this period, the boiler's combustion status must be comprehensively monitored, and key combustion indicators such as fuel ignition, internal pressure, and excess air coefficient must be accurately controlled. Only after confirming that all combustion indicators are stable and there are no combustion abnormalities at that load level can the next load reduction operation be carried out, ensuring that each load reduction operation is based on stable combustion.

[0055] When the boiler load is gradually reduced to the preset target stable combustion load through step-by-step reduction, the load reduction operation will cease, and the boiler will continue to operate at the target stable combustion load for a duration not less than the pre-set time. Sufficient continuous operation time can fully verify the continuity and stability of the boiler's combustion state under the target stable combustion load, ensuring that the boiler has the ability to maintain stable combustion for a long period of time under this load. Throughout the entire load reduction process, it is necessary to continuously monitor the dynamic changes of various core operating parameters of the boiler, and promptly judge the combustion state based on parameter changes to ensure the smooth progress of the load reduction operation and the effective realization of the stable combustion effect under the target stable combustion load.

[0056] Corresponding to the above-described method for operating a boiler at low load, this invention also proposes a device for operating a boiler at low load. Since the device embodiments of this invention correspond to the method embodiments described above, details not disclosed in the device embodiments can be referred to in the method embodiments described above, and will not be repeated here.

[0057] Figure 2 This is a schematic diagram of the structure of a boiler low-load operation device provided in an embodiment of the present disclosure, as shown below. Figure 2 As shown, it includes: The acquisition unit 21 is used to acquire the operating parameters of the boiler under low load conditions; Adjustment unit 22 is used to adjust the operating status of the boiler's combustion equipment according to the operating parameters; Control unit 23 is used to reduce boiler load until a target stable combustion load is reached based on the adjusted combustion conditions, and to maintain stable combustion under the target stable combustion load.

[0058] Furthermore, in one possible implementation of this disclosure, the acquisition unit 21 is further configured to: The primary air velocity and inlet air volume of the coal mill are measured, and the corresponding air volume measuring device is calibrated based on the measurement results.

[0059] Furthermore, in one possible implementation of this disclosure, the acquisition unit 21 is further configured to: The primary air velocity at the outlet of the coal mill is measured to obtain the calibration coefficients used to calibrate the primary air velocity measuring device; The actual air volume at the coal mill inlet is calculated based on the primary wind speed to calibrate the coefficient of the coal mill inlet air volume measuring device.

[0060] Furthermore, in one possible implementation of this disclosure, the adjustment unit 22 is further configured to: Adjust the opening of the separator baffle of the coal mill.

[0061] Furthermore, in one possible implementation of this disclosure, the adjustment unit 22 is further configured to: Adjust the combination of coal mills put into operation.

[0062] Furthermore, in one possible implementation of this disclosure, the control unit 23 is further configured to: Reduce the boiler load step by step according to the preset load reduction range; The system operates stably for a preset time at each load level, and the combustion status is monitored. When the boiler load is reduced to the target stable combustion load, it shall maintain operation for a period of time not less than the preset duration.

[0063] It should be noted that the foregoing explanation of the method embodiments also applies to the apparatus of the embodiments of this disclosure, and the principle is the same. Therefore, the embodiments of this disclosure are not limited thereto.

[0064] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0065] Figure 3A schematic block diagram of an example electronic device 400 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0066] like Figure 3 As shown, device 400 includes a computing unit 401, which can perform various appropriate actions and processes based on a computer program stored in ROM (Read-Only Memory) 402 or a computer program loaded from storage unit 408 into RAM (Random Access Memory) 403. RAM 403 may also store various programs and data required for the operation of device 400. The computing unit 401, ROM 402, and RAM 403 are interconnected via bus 404. I / O (Input / Output) interface 405 is also connected to bus 404.

[0067] Multiple components in device 400 are connected to I / O interface 405, including: input unit 406, such as keyboard, mouse, etc.; output unit 407, such as various types of monitors, speakers, etc.; storage unit 408, such as disk, optical disk, etc.; and communication unit 409, such as network card, modem, wireless transceiver, etc. Communication unit 409 allows device 400 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0068] The computing unit 401 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, CPUs (Central Processing Units), GPUs (Graphics Processing Units), various special-purpose AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, DSPs (Digital Signal Processors), and any suitable processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as the boiler low-load operation method. For example, in some embodiments, the boiler low-load operation method can be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 408. In some embodiments, part or all of the computer program can be loaded and / or installed on device 400 via ROM 402 and / or communication unit 409. When the computer program is loaded into RAM 403 and executed by the computing unit 401, one or more steps of the methods described above can be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to perform the aforementioned boiler low-load operation method by any other suitable means (e.g., by means of firmware).

[0069] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System-on-Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0070] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0071] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0072] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0073] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include LANs (Local Area Networks), WANs (Wide Area Networks), the Internet, and blockchain networks.

[0074] Computer systems can include clients and servers. Clients and servers are generally geographically separated and typically interact via communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. A server can be a cloud server, also known as a cloud computing server or cloud host, a hosting product within the cloud computing service system that addresses the shortcomings of traditional physical hosts and VPS (Virtual Private Server) services, such as high management difficulty and weak business scalability. Servers can also be servers for distributed systems or servers incorporating blockchain technology.

[0075] It's important to note that artificial intelligence (AI) is the study of enabling computers to simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). It encompasses both hardware and software technologies. AI hardware technologies generally include sensors, dedicated AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily include computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graph technologies.

[0076] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0077] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method for operating a boiler at a low load, characterized by, include: Obtain the boiler's operating parameters under low load conditions; Adjust the operating status of the boiler's combustion equipment according to the aforementioned operating parameters; Based on the adjusted combustion conditions, the boiler load is reduced until the target stable combustion load is reached, and stable combustion is maintained under the target stable combustion load.

2. The method of claim 1, wherein, The acquisition of boiler operating parameters under low load conditions includes: The primary air velocity and inlet air volume of the coal mill are measured, and the corresponding air volume measuring device is calibrated based on the measurement results.

3. The method according to claim 2, characterized in that, The measurement of the primary air velocity and inlet air volume of the coal mill includes: The primary air velocity at the outlet of the coal mill is measured to obtain the calibration coefficients used to calibrate the primary air velocity measuring device; The actual air volume at the coal mill inlet is calculated based on the primary wind speed to calibrate the coefficient of the coal mill inlet air volume measuring device.

4. The method according to claim 1, characterized in that, The adjustment of the boiler's combustion equipment operating status includes: Adjust the opening of the separator baffle of the coal mill.

5. The method according to claim 1, characterized in that, The adjustment of the boiler's combustion equipment operating status includes: Adjust the combination of coal mills put into operation.

6. The method according to claim 1, characterized in that, The process of reducing the boiler load until the target stable combustion load is reached based on the adjusted combustion conditions includes: Reduce the boiler load step by step according to the preset load reduction range; The system operates stably for a preset time at each load level, and the combustion status is monitored. When the boiler load is reduced to the target stable combustion load, it shall maintain operation for a period of time not less than the preset duration.

7. A boiler low-load operation device, characterized in that, include: The acquisition unit is used to acquire the operating parameters of the boiler under low load conditions. An adjustment unit is used to adjust the operating status of the boiler's combustion equipment according to the operating parameters. The control unit is used to reduce the boiler load until a target stable combustion load is reached based on the adjusted combustion conditions, and to maintain stable combustion under the target stable combustion load.

8. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-6.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-6.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method according to any one of claims 1-6.

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