A domestic coal feeder intelligent controller

Abstract

The application discloses a domestic coal feeder intelligent controller and relates to the technical field of power generation. The domestic coal feeder intelligent controller comprises a power module, an input / output signal module, a main control module and a power interruption protection module, the power module is used for power supply, the main control module is connected with a detection unit and an execution unit of the coal feeder through the input / output signal module integrated to the main control module, the main control module is used for performing operation processing on a detection signal detected by the detection unit, generating a corresponding control instruction, and sending the control instruction to the execution unit, and the power interruption protection module is used for monitoring a power supply state of the coal feeder in real time, storing operation data and operation parameters sent by the main control module when the power supply state is abnormal, and sending the operation data and the operation parameters to the main control module when the power supply state returns to normal, so that the main control module recovers operation according to the operation data and the operation parameters and the coal feeder returns to an operation state before the power supply state is abnormal.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of power generation technology, and in particular to a domestically produced intelligent controller for coal feeders. Background Technology

[0002] The coal feeder is the core equipment of the coal conveying system in a thermal power plant. It is responsible for continuously, uniformly and quantitatively conveying raw coal to the coal mill. Its control accuracy directly affects the boiler combustion efficiency and unit stability.

[0003] On the one hand, traditional coal feeder controllers rely heavily on imported chips and electronic components, which are subject to serious supply disruptions due to international trade frictions. Furthermore, the long procurement cycle and large price fluctuations of imported components directly affect the production and delivery efficiency and cost control of coal feeder controllers. At the same time, there is a core issue of poor supply chain self-control. On the other hand, the on-site working conditions of coal feeders are complex and harsh, with problems such as high dust, high humidity, and frequent vibrations. Electromagnetic interference is also severe. Traditional coal feeder controllers have insufficient power failure protection capabilities. Temporary power outages can easily lead to loss of operating data and equipment shutdown. After power is restored, parameters need to be manually reset, affecting the continuity of power plant production. In actual operation, the service life and stability are difficult to guarantee. Summary of the Invention

[0004] This invention provides a domestically produced intelligent controller for coal feeders, which enables automatic data saving during power outages and seamless power restoration, overcoming the shortcomings of traditional coal feeder controllers.

[0005] This invention provides a domestically produced intelligent controller for a coal feeder, comprising: a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module is connected to the detection unit and execution unit of the coal feeder via the integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module monitors the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operating parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operating parameters back to the main control module, enabling the main control module to resume operation based on the operating data and operating parameters, restoring the coal feeder to its operating state before the power supply abnormality.

[0006] The technical solution of this invention provides a domestically produced intelligent controller for a coal feeder, comprising: a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module is connected to the detection unit and execution unit of the coal feeder via the integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module monitors the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operating parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operating parameters back to the main control module, enabling the main control module to resume operation based on the operating data and operating parameters, restoring the coal feeder to its operating state before the power supply abnormality. The aforementioned technical solution, by adopting domestically produced electronic components and dedicated circuit design, completely eliminates dependence on imported chips and components, avoids the risks of supply chain disruptions, long procurement cycles, and price fluctuations, and achieves independent control of the supply chain. The power interruption protection module addresses the pain points of traditional coal feeder controllers, such as data loss and shutdown restarts, during power outages. The system automatically resumes operation after power is restored without manual intervention, preventing power plant production interruptions due to temporary power outages and improving production continuity and automation. Furthermore, the integrated input / output signal module in the main control module provides rich interfaces, allowing direct connection to centralized control systems of different types and power levels in power plants without additional adapters. Customized interfaces are also reserved to meet the future functional expansion needs of power plants, enhancing adaptability.

[0007] Furthermore, the detection unit includes at least a weighing sensor, a speed sensor, a temperature sensor, and a coal quantity detector, and the execution unit includes at least a motor and a valve.

[0008] Furthermore, the process by which the main control module processes the detection signal detected by the detection unit and generates corresponding control commands includes: When it is determined that the detection signal includes the weight signal detected by the weighing sensor and the speed signal detected by the speed sensor, the speed signal in analog form is converted into a digital signal, and the coal feeding rate of the coal feeder is determined based on the weight signal and the digitized speed signal. The speed adjustment command of the motor and / or the opening adjustment command of the valve are determined based on the coal feeding rate.

[0009] Furthermore, the process by which the main control module processes the detection signal detected by the detection unit and generates corresponding control commands includes: When it is determined that the detection signal does not include the weight signal and the speed signal, but includes the temperature signal detected by the temperature sensor and / or the coal quantity signal detected by the coal quantity detector, the temperature signal and / or the coal quantity signal in analog form are converted into digital signals, and the coal feeding rate of the coal feeder is determined based on the digitized temperature signal and / or coal quantity signal. The speed adjustment command of the motor and / or the opening adjustment command of the valve are determined based on the coal feeding rate.

[0010] Furthermore, the coal quantity signal includes a coal shortage signal or a coal blockage signal.

[0011] Furthermore, the input / output signal module is connected to the detection unit and the execution unit through an electrical isolation module and an optocoupler isolation module.

[0012] Furthermore, the input / output signal module integrates multiple input interfaces and multiple output interfaces.

[0013] Furthermore, the input / output signal module is an integrated terminal block.

[0014] Furthermore, the main control module is also used to upload the real-time operating parameters and real-time status of the coal feeder to the power supply system to which the coal feeder belongs, and control the operation of the coal feeder based on the remote control commands issued by the power supply system.

[0015] Furthermore, the domestically produced intelligent controller for coal feeders is communicatively connected to the interactive device and the coal feeder. The interactive device is used to set the operating parameters of the domestically produced intelligent controller for coal feeders, monitor the operating status of the coal feeder, and display fault alarms of the domestically produced intelligent controller for coal feeders and the coal feeder.

[0016] These aspects of this application will become clearer in the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a domestically produced intelligent controller for a coal feeder, provided as an embodiment of the present invention. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0021] The terms "first" and "second," etc., used in the specification and drawings of this application are used to distinguish different objects or to distinguish different treatments of the same object, rather than to describe a specific order of objects.

[0022] Furthermore, the terms "comprising" and "having," and any variations thereof, used in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0023] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc. Moreover, embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0024] It should be noted that in the embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0025] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] Figure 1This is a schematic diagram of the structure of a domestically produced intelligent controller for a coal feeder provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the domestically produced intelligent controller for coal feeders specifically includes: a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module connects to the detection unit and execution unit of the coal feeder through an integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module monitors the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operating parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operating parameters back to the main control module so that the main control module can resume operation based on the operating data and operating parameters, restoring the coal feeder to its operating state before the power supply abnormality.

[0027] Among them, all electronic components, chips, and circuits of the coal feeder intelligent controller are designed with domestic production.

[0028] The power supply module, input / output signal module, main control module, and power interruption protection module are integrated into the coal feeder intelligent controller body. They are bidirectionally connected through the internal power supply bus and high-speed data interaction bus. The power supply module provides a stable and regulated low-voltage power supply to the input / output signal module, main control module, and power interruption protection module. The power interruption protection module is bidirectionally connected to the power supply module and main control module to realize real-time monitoring of power supply status and data storage during power failure.

[0029] The control module and input / output signal module are integrated into one design. Various switch and analog signals from the power plant can be connected to the control module through the input / output signal module. The load cell is connected via a 5-pin socket, and the power supply is connected via a 2-pin socket. This eliminates the need for traditional prefabricated cables, conditioning boards, and intermediate terminals, and removes redundant adapter accessories.

[0030] The main control module is equipped with an industrial bus interface, an isolated communication interface, and an interactive interface, which can be directly connected to the power plant's centralized control system to realize the uploading of operating parameters and the reception of centralized control commands. At the same time, the main control module connects to the detection unit and execution unit of the coal feeder through an integrated input / output signal module to realize signal acquisition and control command output.

[0031] The main control module integrates a high-precision signal conversion circuit. The weight signal collected by the weighing sensor is input to a 24-bit Σ-Δ ADC conversion circuit, while the analog signals collected by other sensors such as speed and temperature sensors are input to a 16-bit ADC conversion circuit. After signal conditioning, the signals are transmitted to the main control module. The main control module processes the weight signal and analog signal through a "multi-channel time" processing program. The generated control commands are converted into analog signals by a 16-bit DAC or frequency / voltage converter and transmitted to the execution unit of the coal feeder through the input / output signal module. Closed-loop control of the coal feeding rate is achieved through high-precision signal conversion and calculation.

[0032] The power interruption protection module's detection unit monitors the external power supply in real time and is in standby monitoring mode during normal operation. When a temporary power interruption occurs, the detection unit instantly triggers an emergency storage command, storing all current operating data and parameters (feeding speed, weighing threshold, motor speed, etc.) of the coal feeder controller sent by the main control module into a dedicated storage unit. When the power supply is restored, the detection unit triggers an automatic system recovery command, and the storage unit transmits the operating data and parameters to the main control module. The main control module automatically restores the original process program based on the operating data and parameters, and the coal feeder directly returns to its operating state before the power outage, achieving a seamless restart.

[0033] This invention provides a domestically produced intelligent controller for a coal feeder, comprising: a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module is connected to the detection unit and execution unit of the coal feeder via the integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module monitors the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operating parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operating parameters back to the main control module, enabling the main control module to resume operation based on the operating data and operating parameters, restoring the coal feeder to its operating state before the power supply abnormality. The aforementioned technical solution, by adopting domestically produced electronic components and dedicated circuit design, completely eliminates dependence on imported chips and components, avoids the risks of supply chain disruptions, long procurement cycles, and price fluctuations, and achieves independent control of the supply chain. The power interruption protection module addresses the pain points of traditional coal feeder controllers, such as data loss and shutdown restarts, during power outages. The system automatically resumes operation after power is restored without manual intervention, preventing power plant production interruptions due to temporary power outages and improving production continuity and automation. Furthermore, the integrated input / output signal module in the main control module provides rich interfaces, allowing direct connection to centralized control systems of different types and power levels in power plants without additional adapters. Customized interfaces are also reserved to meet the future functional expansion needs of power plants, enhancing adaptability.

[0034] This invention provides another domestically produced intelligent controller for coal feeders, which is a further refinement of the above-described embodiments. In this embodiment, the domestically produced intelligent controller for coal feeders includes: a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module is connected to the detection unit and execution unit of the coal feeder via the integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module monitors the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operating parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operating parameters back to the main control module, enabling the main control module to resume operation based on the operating data and operating parameters, restoring the coal feeder to its operating state before the power supply abnormality.

[0035] The intelligent controller body of the coal feeder is installed vertically or horizontally inside the control cabinet of the coal feeder. The power module, input / output signal module, main control module and power interruption protection module are independently arranged in functional areas within the intelligent controller body and do not interfere with each other.

[0036] The power sockets and sensor sockets are centrally located on the front of the coal feeder intelligent controller, while the communication interface is located at the bottom of the coal feeder intelligent controller. They are arranged according to functional zones, and the input / output signal modules are arranged in an integrated long strip design, which facilitates on-site wiring, inspection, and maintenance.

[0037] The main body of the intelligent controller for the coal feeder is installed inside the microcomputer control cabinet of the coal feeder, close to the detection and execution units of the coal feeder. Field signals can be directly connected to the input / output signal modules and sockets of the intelligent controller for the coal feeder through short-distance cables, eliminating the need for long-distance wiring and reducing interference and attenuation during signal transmission.

[0038] The power module, as the core of the entire controller's power supply, connects to an external power source through a 2-pin socket on the front, converting it into a regulated low voltage required for the operation of the coal feeder intelligent controller. This provides a stable and compatible power supply for the coal feeder intelligent controller, while also having overvoltage and overcurrent protection functions to prevent damage to the hardware due to abnormal power supply, thus solving the problem of poor power supply compatibility in traditional coal feeder controllers.

[0039] The input / output signal module is connected to the detection unit and execution unit through electrical isolation module and optocoupler isolation module, realizing dual optical and electrical isolation processing of external signals. The communication interface adopts an isolated design to prevent hardware damage caused by instantaneous voltage changes and signal malfunction caused by noise, thus resisting strong electromagnetic interference from power plants at the hardware level.

[0040] The input / output signal module integrates multiple input and output interfaces, enabling efficient acquisition of field signals and accurate output of control commands. Furthermore, the input / output signal module is an integrated terminal block. Through a hybrid integrated and split structure, it achieves seamless integration between the coal feeder intelligent controller and the field signal terminal block, highly integrating the input / output signal module and the control module. This eliminates the need for traditional multi-core prefabricated cables and conditioning boards. Field signals are connected to the control module via the input / output signal module, eliminating the need for additional adapters and reducing potential failure points. The integrated and zoned interface layout also makes field wiring and maintenance more convenient. The dedicated sensor socket adopts a pluggable design, facilitating sensor replacement and debugging, and meeting the signal acquisition and output requirements of centralized control for various power plant units.

[0041] The main control module is the core computing and control unit of the coal feeder intelligent controller. It is equipped with an industrial microprocessor and high-speed memory, which can quickly execute complex control instructions.

[0042] When assembling the intelligent controller for the coal feeder, the controller body needs to be installed in the predetermined position inside the microcomputer control cabinet of the coal feeder using a fixed bracket, ensuring that there is a heat dissipation gap between it and the cabinet wall. Connect the power switch of the intelligent controller to the main power supply of the control cabinet to complete the fixing and initial wiring of the controller body. Connect the external power supply to the 2-pin power socket on the front of the controller via a cable. Connect the load cell and the calibration probe to the 5-pin load cell socket and the 5-pin calibration probe socket on the front of the controller respectively via dedicated cables, ensuring that the plugs are secure. Connect the on-site switch and analog signals from the speed sensor, temperature sensor, frequency converter control, etc., directly to the integrated on-site signal terminal block on the front of the controller, wiring according to the terminal markings, without the need for additional intermediate terminals, conditioning boards, or pre-fabricated cables. The intelligent controller for the coal feeder communicates with the interactive module, which can be a touch control screen. The touch control screen is embedded in the operating window of the control cabinet door panel. Sealing rings are installed at the gaps where the touch control screen contacts the door panel to ensure a seamless seal. The touch control screen is connected to the bottom interactive interface of the intelligent controller for the coal feeder via a single communication cable. A protective glass door is installed on the outside of the control cabinet door panel to cover and secure the touch control screen. Based on the centralized control requirements of the power plant unit, the industrial bus interface / isolation interface at the bottom of the controller is connected to the power plant's centralized control system to complete the communication interface.

[0043] When starting up the intelligent controller of the coal feeder, first turn on the main power switch of the coal feeder microcomputer control cabinet. All modules of the intelligent controller will automatically power on, the power supply module will start stabilizing the power supply, the power interruption protection module will enter the real-time power supply monitoring state, and after all modules complete self-tests, the touch control screen will automatically light up. If there are no faults, the normal operation interface will be displayed. The operator opens the protective glass door of the control cabinet, logs into the controller operation interface through the touch control screen, and checks the initial operating parameters of the coal feeder and the status of each module of the controller to confirm that there are no fault alarms and the signal acquisition is normal. According to the feeding requirements of the power plant unit, the operator sets the operating parameters of the coal feeder, such as feeding speed, weighing threshold, motor speed, valve opening, etc., on the touch control screen. After setting, the parameters are saved to complete the start-up operation.

[0044] When shutting down the intelligent controller of the coal feeder, the operator sends a shutdown command to the coal feeder through the touch control screen. After receiving the command, the main control module gradually sends control commands to the execution unit to realize reset operations such as motor speed reduction and valve closure. After the coal feeder has completely stopped, the operator confirms on the touch control screen that all operating data has been saved. The operator then turns off the main power switch of the control cabinet to disconnect the external power supply. If the shutdown is to be long-term, the operator shuts off the communication connection between the power plant's centralized control system and the intelligent controller of the coal feeder, closes and locks the protective glass door of the control cabinet, and takes measures to protect the equipment from dust and moisture.

[0045] When disassembling the intelligent controller of the coal feeder, first send a shutdown command to the coal feeder via the touch control screen. After the coal feeder execution unit has fully reset and stopped, turn off the main power switch of the control cabinet and disconnect the external power supply. Sequentially disconnect the connecting cables / plugs between the front of the intelligent controller of the coal feeder and the power plant's centralized control system, the field signals of the coal feeder, and the sensors, and make wiring labels to avoid incorrect connections during reassembly. Remove the protective glass door on the outside of the control cabinet door panel, disconnect the communication cable between the touch control screen and the intelligent controller of the coal feeder, remove the sealing ring between the touch control screen and the door panel, and take the touch control screen out of the door panel operation window. Remove the fixing bracket between the intelligent controller body of the coal feeder and the control cabinet, and take the intelligent controller body of the coal feeder out of the control cabinet. Clean the disassembled intelligent controller of the coal feeder, the touch control screen, and the inside of the control cabinet to remove dust and other debris, and store them in a protective condition.

[0046] All hardware modules of the coal feeder intelligent controller are designed with circuit layout optimization, signal isolation, and grounding protection to resist strong electromagnetic interference at the power plant site from the hardware level, ensuring the signal transmission stability and operational reliability of the coal feeder intelligent controller in complex electromagnetic environments.

[0047] The detection unit includes at least a weighing sensor, a speed sensor, a temperature sensor, and a coal quantity detector, and the execution unit includes at least a motor and a valve.

[0048] The weight signal collected by the weighing sensor of the coal feeder is input to the 24-bit Σ-Δ ADC conversion circuit (resolution 0.0015%) of the main control module. The speed signal, temperature signal and coal quantity signal collected by the speed sensor, temperature sensor and coal quantity detector are input to the 16-bit ADC conversion circuit (resolution 0.03%). After signal conditioning, they are converted into digital signals and transmitted to the high-speed main control module. The main control module performs high-speed calculation on the weight signal and speed signal and low-speed processing on the temperature signal and coal quantity signal through the "multi-channel time" processing program to determine the control command. The generated control command is converted into an analog signal by a 16-bit DAC or frequency / voltage converter and transmitted to the execution unit of the coal feeder through the input / output signal module to realize high-precision metering and fine control of the coal feeder.

[0049] In one embodiment, the process by which the main control module processes the detection signal detected by the detection unit to generate corresponding control commands includes: When the detection signal is determined to include the weight signal detected by the weighing sensor and the speed signal detected by the speed sensor, the speed signal in analog form is converted into a digital signal. Based on the weight signal and the digitized speed signal, the coal feeding rate of the coal feeder is determined. Based on the coal feeding rate, the speed adjustment command of the motor and / or the opening adjustment command of the valve are determined.

[0050] Specifically, when the detection signals include the weight signal detected by the weighing sensor and the speed signal detected by the speed sensor, the analog speed signal is first converted into a digital signal. Then, based on the weight signal and the digitized speed signal, the coal feeding rate of the coal feeder is determined. Subsequently, based on the coal feeding rate, the motor speed adjustment command and / or the valve opening adjustment command are determined. The motor speed adjustment command can then be sent to the motor and / or the valve opening adjustment command can be sent to the valve to control the operation of the motor and / or the valve.

[0051] In one embodiment, the process by which the main control module processes the detection signal detected by the detection unit to generate corresponding control commands includes: When it is determined that the detection signal does not include the weight signal and the speed signal, but includes the temperature signal detected by the temperature sensor and / or the coal quantity signal detected by the coal quantity detector, the analog temperature signal and / or the coal quantity signal are converted into digital signals. Based on the digitized temperature signal and / or coal quantity signal, the coal feeding rate of the coal feeder is determined. Based on the coal feeding rate, the speed adjustment command of the motor and / or the opening adjustment command of the valve are determined.

[0052] The coal quantity signal includes a coal shortage signal or a coal blockage signal.

[0053] Specifically, when it is determined that the detection signal does not include weight and speed signals, but includes temperature signals detected by temperature sensors and / or coal quantity signals detected by coal quantity detectors, the analog temperature signals and / or coal quantity signals are converted into digital signals. Based on the digitized temperature signals and / or coal quantity signals, the coal feeding rate of the coal feeder is determined. Based on the coal feeding rate, the motor speed adjustment command and / or valve opening adjustment command are determined. Then, the motor speed adjustment command can be sent to the motor and / or the valve opening adjustment command can be sent to the valve to control the operation of the motor and / or the valve.

[0054] By integrating high-precision signal conversion circuits, high-precision acquisition and conversion of weight signals and analog signals are achieved. The "multi-channel time" processing concept is adopted to perform high-speed calculations on weight signals and speed signals, and low-speed processing on temperature signals and coal quantity signals to determine control commands.

[0055] Furthermore, the main control module is also used to upload the real-time operating parameters and real-time status of the coal feeder to the power supply system to which the coal feeder belongs, and control the operation of the coal feeder based on the remote control commands issued by the power supply system.

[0056] The main control module uploads the real-time operating parameters of the coal feeder and the controller status to the power plant's centralized control system via an industrial bus interface. Simultaneously, it receives remote control commands from the power plant's centralized control system, enabling centralized control. The touch control screen displays the coal feeder's operating parameters and the status of each module in real time. In case of a fault, it automatically alarms and displays the fault location, facilitating on-site inspection. During the operation of the coal feeder's intelligent controller, the main control module stores key operating data and parameters in real time to a high-speed memory. Simultaneously, the power interruption protection module is in real-time monitoring mode to ensure data security.

[0057] It should be noted that the hardware and software of the coal feeder intelligent controller have undergone rigorous performance testing, anti-interference testing, and environmental adaptability testing. They have also been tested under the harsh working conditions of a power plant coal feeder over a long period of time to ensure the reliability, stability, and service life of the intelligent controller in actual operation. At the same time, customized interfaces are reserved to meet the additional functional development needs of power plants.

[0058] The intelligent controller for the coal feeder is connected to the interactive device and the coal feeder for communication. The interactive device is used to set the operating parameters of the intelligent controller for the coal feeder, monitor the operating status of the coal feeder, and display fault alarms of the intelligent controller for the coal feeder and the coal feeder.

[0059] The interactive device can be a touch control screen. The controller and touch control screen are designed separately and connected by only a single communication cable, which takes into account both the ease of installation and the ease of operation and maintenance.

[0060] The touch control screen is protected by a glass door of the control cabinet. A sealing ring is used to seal the touch control screen and the control cabinet door. This combination of a sealing ring and a protective glass door effectively isolates the device from harsh environments such as dust, humidity, and vibration at the power plant site, improving the protection level of the interactive terminal and extending the equipment's service life. The intelligent coal feeder controller provided in this embodiment of the invention, by adding an independent power interruption protection module, can immediately and automatically store the operating parameters and control parameters sent by the main control module when the power supply is temporarily interrupted. After power is restored, no manual intervention is required; the data can be automatically retrieved and the original process program can be resumed, avoiding downtime and data loss caused by power failure. This solves the problems of data loss and the need for manual parameter resetting after shutdown caused by traditional controllers, improving the continuity of power plant production. By integrating industrial bus interfaces, isolation interfaces, and input / output signal modules, it can directly connect to the power plant's centralized control system, supporting multi-signal acquisition and remote control, solving the problems of insufficient interfaces and poor compatibility with centralized control in traditional controllers. By incorporating a 24-bit Σ-Δ ADC conversion circuit and a 16-bit ADC conversion circuit, high-precision signal acquisition and conversion are achieved. Combined with a high-speed main control module and a "multi-channel time" processing program, the processing and output speed of control commands are improved, solving the problems of low metering accuracy and control lag in traditional controllers. The metering accuracy and control response speed of the coal feeder are significantly improved, meeting the production needs of power plants for refined material supply. By highly integrating each module into the intelligent controller body of the coal feeder, an integrated design is adopted, reducing equipment size and optimizing the layout within the control cabinet, solving the problems of scattered hardware, large space occupation, and chaotic layout of traditional controllers. The integrated terminal block design eliminates traditional pre-fabricated cables and conditioning boards, allowing direct access to field signals, reducing wiring workload, significantly reducing potential failure points. Simultaneously, the modular design allows for single-module replacement during field maintenance without the need for complete disassembly, improving operational efficiency.

[0061] Furthermore, the acquisition, storage, use, and processing of data in the technical solution of this invention all comply with relevant laws and regulations.

[0062] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A domestically produced intelligent controller for a coal feeder, characterized in that, include: The system includes a power supply module, an input / output signal module, a main control module, and a power interruption protection module. The power supply module provides power to the input / output signal module, the main control module, and the power interruption protection module. The main control module connects to the feeder's detection unit and execution unit via the integrated input / output signal module. The main control module processes the detection signals detected by the detection unit, generates corresponding control commands, and sends the control commands to the execution unit. The power interruption protection module is used to monitor the power supply status of the coal feeder in real time. When the power supply status is abnormal, it stores the operating data and operation parameters sent by the main control module. When the power supply status returns to normal, it sends the operating data and operation parameters to the main control module so that the main control module can resume operation according to the operating data and operation parameters and restore the coal feeder to the operating state before the power supply status was abnormal.

2. The domestically produced intelligent controller for coal feeders according to claim 1, characterized in that, The detection unit includes at least a weighing sensor, a speed sensor, a temperature sensor, and a coal quantity detector, and the execution unit includes at least a motor and a valve.

3. The domestically produced intelligent controller for coal feeders according to claim 2, characterized in that, The process by which the main control module processes the detection signal detected by the detection unit and generates corresponding control commands includes: When it is determined that the detection signal includes the weight signal detected by the weighing sensor and the speed signal detected by the speed sensor, the speed signal in analog form is converted into a digital signal, and the coal feeding rate of the coal feeder is determined based on the weight signal and the digitized speed signal. The speed adjustment command of the motor and / or the opening adjustment command of the valve are determined based on the coal feeding rate.

4. The domestically produced intelligent controller for coal feeders according to claim 3, characterized in that, The process by which the main control module processes the detection signal detected by the detection unit and generates corresponding control commands includes: When it is determined that the detection signal does not include the weight signal and the speed signal, but includes the temperature signal detected by the temperature sensor and / or the coal quantity signal detected by the coal quantity detector, the temperature signal and / or the coal quantity signal in analog form are converted into digital signals, and the coal feeding rate of the coal feeder is determined based on the digitized temperature signal and / or coal quantity signal. The speed adjustment command of the motor and / or the opening adjustment command of the valve are determined based on the coal feeding rate.

5. The domestically produced intelligent controller for coal feeders according to claim 4, characterized in that, The coal quantity signal includes a coal shortage signal or a coal blockage signal.

6. The domestically produced intelligent controller for coal feeders according to claim 1, characterized in that, The input / output signal module is connected to the detection unit and the execution unit through an electrical isolation module and an optocoupler isolation module.

7. The domestically produced intelligent controller for coal feeders according to claim 1, characterized in that, The input / output signal module integrates multiple input interfaces and multiple output interfaces.

8. The intelligent controller for a coal feeder according to claim 1, characterized in that, The input / output signal module is an integrated terminal block.

9. The domestically produced intelligent controller for coal feeders according to claim 1, characterized in that, The main control module is also used to upload the real-time operating parameters and real-time status of the coal feeder to the power supply system to which the coal feeder belongs, and control the operation of the coal feeder based on the remote control commands issued by the power supply system.

10. The domestically produced intelligent controller for coal feeders according to claim 1, characterized in that, The domestically produced intelligent controller for coal feeders is connected to the interactive device and the coal feeder for communication. The interactive device is used to set the operating parameters of the domestically produced intelligent controller for coal feeders, monitor the operating status of the coal feeder, and display fault alarms of the domestically produced intelligent controller for coal feeders and the coal feeder.

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