A hearth coke drop monitoring device, system and method

Abstract

The application discloses a furnace coking drop monitoring device, system and method; wherein, the device at least comprises: a radar monitoring system, which is used for monitoring the coking drop situation in the furnace in real time, determining the coking drop area in the furnace and the coking drop degree in the coking drop area, and transmitting the coking drop area in the furnace and the coking drop degree in the coking drop area to the control system as monitoring data, so that the control system can control the coking drop situation in the furnace based on the coking drop area in the furnace and the coking drop degree in the coking drop area. The embodiment of the application can monitor the coking drop situation in the furnace in real time, accurately determine the coking drop area and the coking drop degree, and provide reliable monitoring data for the control system, so as to solve the technical defects of monitoring lag and judgment deviation caused by relying on manual judgment in the prior art, and guarantee the safe and efficient operation of the coal-fired boiler unit.

Description

Technical Field

[0001] This application relates to the field of furnace safety monitoring technology, and in particular to a furnace coke shedding monitoring device, system and method. Background Technology

[0002] During the operation of coal-fired boilers, coke lumps easily form inside the furnace after fuel combustion and adhere to the heating surfaces. Coke lumps falling off (i.e., coke shedding in the furnace) is a key risk factor that can lead to boiler equipment damage and unit shutdown. With the widespread application of new-generation coal-fired power technologies, furnace operating conditions are becoming more complex, and coke shedding is becoming more frequent. Furthermore, the instantaneous and unpredictable path of coke lumps further exacerbates safety risks. When large coke lumps fall, they not only violently impact core heating surfaces such as water-cooled walls, causing pipe wear, deformation, and even pipe rupture, but can also block and shut down the ash and slag conveying system, leading to abnormal fluctuations in furnace pressure and ultimately causing unplanned shutdowns of the entire unit, resulting in significant economic losses and safety hazards for power production.

[0003] Currently, the industry lacks dedicated real-time monitoring devices for coke shedding in the furnace. Judgment of coke shedding conditions relies primarily on manual observation and experience-based guesswork by operators. This leads to untimely monitoring, inaccurate judgments, and an inability to precisely locate the coke shedding area or assess its extent. Consequently, it fails to provide reliable operational guidance to operators, hindering early warning and effective control of coke shedding risks, and severely impacting the safe and stable operation of boiler units. Therefore, there is an urgent need for a furnace coke shedding monitoring device capable of real-time monitoring of coke falling within the furnace, accurately determining the coke shedding area and its extent, and providing reliable monitoring data to the control system. This would address the technical deficiencies of existing technologies, such as monitoring lag and judgment bias caused by reliance on manual judgment, and ensure the safe and efficient operation of coal-fired boiler units. Summary of the Invention

[0004] This application provides a furnace coke falling monitoring device, system and method, which can monitor the coke falling in the furnace in real time, accurately determine the coke falling area and degree, and provide reliable monitoring data for the control system. This solves the technical defects of the prior art, such as monitoring lag and judgment deviation caused by reliance on manual judgment, and ensures the safe and efficient operation of coal-fired boiler units.

[0005] In a first aspect, embodiments of this application provide a furnace coke shedding monitoring device, the device comprising at least: a radar monitoring system; wherein...

[0006] The radar monitoring system is used to monitor the coke falling situation in the furnace in real time, determine the coke falling area and the degree of coke falling within the coke falling area, and transmit the coke falling area and the degree of coke falling within the coke falling area as monitoring data to the control system, so that the control system can control the coke falling situation in the furnace based on the coke falling area and the degree of coke falling within the coke falling area. The radar monitoring system includes: multiple measuring guns; a monitoring probe is installed at the front of each measuring gun; a first millimeter-wave radar and a second millimeter-wave radar are provided at the head of the monitoring probe; the first millimeter-wave radar and the second millimeter-wave radar are respectively located at the upper left and upper right of the monitoring probe; the monitoring probe can be inserted vertically into the furnace.

[0007] Secondly, this application also provides a furnace coke shedding monitoring system, the system comprising: a plurality of furnace coke shedding monitoring devices as described in any of the above embodiments and a distributed control system; wherein, the plurality of furnace coke shedding monitoring devices are installed through openings in the water-cooled wall and are arranged at intervals along the circumference and axial direction of the furnace; the distributed control system is used to receive the coke shedding area in the furnace and the degree of coke shedding within the coke shedding area sent by the furnace coke shedding monitoring devices, and to control the coke block falling situation in the furnace based on the coke shedding area in the furnace and the degree of coke shedding within the coke shedding area; wherein, the radar monitoring system comprises: a plurality of measuring guns; a monitoring probe is installed at the front of the measuring gun; a first millimeter-wave radar and a second millimeter-wave radar are provided at the head of the monitoring probe; the first millimeter-wave radar and the second millimeter-wave radar are respectively located at the upper left and upper right of the monitoring probe; the monitoring probe can be vertically inserted into the furnace.

[0008] Thirdly, this application also provides a method for monitoring coke shedding in the furnace, applied to the furnace coke shedding monitoring device described in any of the above embodiments; the method includes:

[0009] The radar monitoring system monitors the coke falling within the furnace in real time, determining the coke-falling area and the degree of coke fall within that area. This data is then transmitted to the control system, enabling the control system to control the coke falling within the furnace based on the specific coke-falling area and degree of coke fall. The radar monitoring system includes multiple measuring guns; each measuring gun has a monitoring probe mounted on its front; the head of the monitoring probe is equipped with a first millimeter-wave radar and a second millimeter-wave radar; the first and second millimeter-wave radars are respectively positioned above and to the left and right of the monitoring probe; the monitoring probe can be inserted vertically into the furnace.

[0010] This application proposes a furnace coke shedding monitoring device, system, and method. The device includes at least a radar monitoring system for real-time monitoring of coke falling within the furnace, determining the coke shedding area and the degree of coke shedding within that area, and transmitting the coke shedding area and degree of coke shedding as monitoring data to a control system. This allows the control system to control the coke falling within the furnace based on the coke shedding area and degree of coke shedding within that area. In other words, the technical solution of this application accurately captures coke shedding signals through a radar monitoring system. Combined with the instantaneous nature of coke falling and the unpredictable location of the falling pieces, this overcomes the limitations of real-time tracking by manual observation. This application can capture coke shedding actions from different directions within the furnace from all angles, avoiding blind spots in single-angle monitoring, achieving real-time capture of coke shedding behavior, and providing a response speed far exceeding that of manual judgment. In existing technologies, the assessment of coke loss primarily relies on manual observation and experience-based guesswork by operators. This leads to problems such as untimely monitoring, inaccurate judgment, and the inability to precisely locate the coke loss area and assess its degree. Consequently, it fails to provide reliable operational guidance for operators, hindering early warning and effective control of coke loss risks, and severely impacting the safe and stable operation of boiler units. Therefore, compared to existing technologies, the furnace coke loss monitoring device, system, and method proposed in this application can monitor the coke falling within the furnace in real time, accurately determine the coke loss area and degree, and provide reliable monitoring data for the control system. This addresses the technical deficiencies of existing technologies, such as monitoring lag and judgment bias caused by reliance on manual judgment, ensuring the safe and efficient operation of coal-fired boiler units. Furthermore, the technical solution of this application is simple and convenient to implement, easy to popularize, and has a wider range of applications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a monitoring probe provided in one embodiment of this application;

[0012] Figure 2 A flowchart illustrating the control logic provided in one embodiment of this application;

[0013] Figure 3 This is a schematic diagram of the structure of a drive system provided in an embodiment of this application;

[0014] Figure 4 This is a schematic diagram of the probe layout in a furnace coke dropping monitoring system provided in an embodiment of this application. Detailed Implementation

[0015] The present application 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 application 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 application, not the entire structure.

[0016] This application provides a furnace coke dropping monitoring device, which includes at least a radar monitoring system. The radar monitoring system is used to monitor the coke dropping situation in the furnace in real time, determine the coke dropping area and the degree of coke dropping within the coke dropping area, and transmit the coke dropping area and the degree of coke dropping within the coke dropping area as monitoring data to the control system, so that the control system can control the coke dropping situation in the furnace based on the coke dropping area and the degree of coke dropping within the coke dropping area.

[0017] Figure 1 This is a schematic diagram of the structure of a monitoring probe provided in one embodiment of this application. Figure 1 As shown in the figure, the main component is the monitoring probe (a long cylindrical member). The monitoring probe is the core component inserted into the furnace. The head of the monitoring probe is equipped with a first millimeter-wave radar (the radar in the upper left) and a second millimeter-wave radar (the radar in the upper right). The first millimeter-wave radar and the second millimeter-wave radar are respectively located in the upper left and upper right of the monitoring probe. Figure 1 The monitoring probe (with oval components on the left and right sides) can be inserted vertically into the furnace. The radar monitoring system can monitor the coke falling inside the furnace in real time using a first millimeter-wave radar and a second millimeter-wave radar. The furnace interior is a three-dimensional space, and the direction of coke falling is random, possibly falling from different angles such as the upper left, upper right, or directly above the monitoring probe. If only one millimeter-wave radar is installed on one side of the head of the monitoring probe, the signal of coke falling on the other side will be missed due to the limitation of the radar detection angle. However, by setting the first and second millimeter-wave radars on the upper left and upper right respectively, and combining them with the design of the working surface at a 30-degree angle to the horizontal plane, a cross-coverage detection area can be formed: the radar on the upper left can cover the left side and upper left space of the monitoring probe, and the radar on the upper right can cover the right side and upper right space of the monitoring probe. The combination of the two can completely cover the fan-shaped three-dimensional area around the head of the probe, avoiding monitoring omissions caused by the direction of coke falling deviating from a single radar viewpoint, and achieving blind-spot-free monitoring of the area where the monitoring probe is located.

[0018] In the specific implementation, if only the upper left radar detects a signal, it indicates that the coke has fallen to the left side of the monitoring probe; if only the upper right radar detects a signal, it indicates that the coke has fallen to the right side of the monitoring probe; if both the upper left and upper right radars detect signals simultaneously, it indicates that the coke has fallen directly above the monitoring probe. When the coke falls directly above the monitoring probe, an emergency exit command is issued simultaneously with a warning, causing the monitoring probe to temporarily retract. The exit time can be manually set, and then it returns to its original position, thus avoiding the risk of the monitoring probe being damaged by a large coke. No emergency evacuation is required when signals are detected by the upper left and upper right radars. By using the signal triggering status of the dual radars, the circumferential range of the defocusing area can be further narrowed. Combined with the axial layout of the probe (different height layers), spatial coordinate-level location of the defocusing area can be achieved. Furthermore, the embodiments of this application can also help determine the size of the focal block (e.g., a large focal block will block the signals of both radars simultaneously, and the blocking time is longer) and the falling path (e.g., when the focal block falls from left to right, the radar in the upper left corner triggers the signal first, and the radar in the upper right corner triggers the signal later) based on the differences in parameters such as the signal strength and signal blocking time received by the radar in the upper left corner and the radar in the upper right corner. This allows for a more accurate quantification of the degree of focus loss and provides a more reliable basis for subsequent control strategies.

[0019] The furnace coke shedding monitoring device proposed in this application accurately captures coke shedding signals through a radar monitoring system. Combining the instantaneous nature of coke falling and the unpredictable location of the falling pieces, it overcomes the limitations of real-time tracking by manual observation. This application embodiment can capture coke shedding actions from different directions within the furnace from all angles, avoiding blind spots in single-angle monitoring and achieving real-time capture of coke shedding behavior with a response speed far exceeding manual judgment. In existing technologies, the judgment of coke shedding mainly relies on manual observation and experience-based guesswork by operators. This results in untimely monitoring, inaccurate judgment, inability to accurately locate the coke shedding area and assess the degree of coke shedding, making it difficult to provide reliable operational references for operators and failing to achieve early warning and effective prevention of coke shedding risks, seriously affecting the safe and stable operation of boiler units. Therefore, compared with the prior art, the furnace coke falling monitoring device proposed in this application embodiment can monitor the coke falling in the furnace in real time, accurately determine the coke falling area and degree, and provide reliable monitoring data for the control system. This solves the technical defects of the prior art, such as monitoring lag and judgment deviation caused by reliance on manual judgment, and ensures the safe and efficient operation of coal-fired boiler units. In addition, the technical solution of this application embodiment is simple and convenient to implement, easy to popularize, and has a wider range of applications.

[0020] In a specific embodiment of this application, the furnace coke shedding monitoring device may further include an adaptive cooling air system. Further, the adaptive cooling air system may include: a cooling air source, a pre-filter pressure reducing valve, an airflow regulating valve, a PLC controller, and a temperature measuring element; the cooling air source uses instrument compressed air, and the pre-filter pressure reducing valve and the airflow regulating valve are connected in series between the cooling air source and the cooling air duct at the tail of the monitoring probe; the temperature measuring element is installed in the cavity at the head of the monitoring probe to monitor the internal temperature of the probe in real time; the airflow regulating valve is installed on the main compressed air pipe and its opening is adjusted by the PLC controller using a stepped opening adjustment method and / or a precise adjustment method. Specifically, the PLC controller in this embodiment may have built-in stepped opening adjustment logic and precise adjustment logic; these two adjustment logics can also be switched or combined as needed. The stepped opening adjustment method uses preset multi-level temperature threshold ranges as the basis for judgment, dividing the temperature of the monitoring probe into different levels. Each temperature level corresponds to a fixed opening value of the air volume regulating valve. The PLC controller directly outputs the corresponding opening command by judging the threshold range to which the real-time temperature belongs, realizing segmented and leveled opening adjustment of the regulating valve. The precise adjustment method uses the preset target temperature of the monitoring probe as the setpoint (SP) and the actual temperature collected in real time by the temperature sensing element as the process value (PV). By calculating the temperature deviation (ΔT=PV-SP) between the process value and the setpoint and the trend of the deviation, a continuously changing opening control signal is output to realize precise and continuous opening adjustment of the air volume regulating valve.

[0021] Figure 2 This is a flowchart illustrating the control logic provided in one embodiment of this application. The specific control logic is as follows: Figure 2 As shown, the logic control flowchart can include: a pressure control loop and a temperature control loop; wherein, 1) in the pressure control loop, the pressure sensor provides a real-time pressure signal; the pressure signal enters the PID controller, which outputs a control signal to drive the pressure regulating valve, realizing closed-loop pressure control. The pressure signal is judged by the high-limit comparator (H / ), which outputs the normal pressure state; the pressure signal is judged by the low-limit comparator ( / L), which performs an OR (or) logic operation with the radar signal, triggering an alarm. 2) in the temperature control loop, the temperature sensor provides a real-time temperature signal; the temperature signal enters the PID controller, which outputs a control signal to drive the temperature regulating valve, realizing closed-loop temperature control. The temperature signal is judged by the high-limit comparator (H / ), which performs an OR (or) logic operation with the radar signal, triggering the RS flip-flop and outputting an exit command; the temperature signal is judged by the low-limit comparator ( / L), which performs an AND (or) logic operation with the normal pressure state, and then performs an OR (or) logic operation with the exit signal, outputting an advance command. The following is a further explanation. Figure 2The key logic components are explained below: PID: Proportional-Integral-Derivative Controller, used for precise adjustment of pressure and temperature; H / and / L: High-limit comparators and low-limit comparators, respectively, used to determine whether the pressure / temperature signal exceeds the predetermined safety range; OR / AND: Logic "OR / AND" gate, used to combine multiple judgment conditions; RS flip-flop: used to maintain the exit state; once triggered, it will remain in this state until forcibly reset; OR: Logic "OR" gate, used to trigger alarm commands and push commands.

[0022] The instrument compressed air in this embodiment refers to compressed air that has been compressed by an air compressor and then purified through multiple stages (filtration, drying, and oil removal). It is mainly used to drive pneumatic instruments and control the actuators of automated equipment. Ordinary compressed air undergoes only simple compression and may contain moisture, oil, and impurities, which cannot meet the requirements of precision instruments; while instrument compressed air must meet strict quality standards.

[0023] In one example, the adaptive cooling air system, when the temperature in the chamber at the head of the monitoring probe detected by the temperature sensing element is higher than a first set value, controls the airflow regulating valve to gradually increase its opening to increase the amount of cooling air entering the measuring gun via a step-wise / gradually increasing opening; when the temperature in the chamber at the head of the monitoring probe detected by the temperature sensing element is lower than a second set value, the PLC controller controls the airflow regulating valve to gradually decrease its opening to reduce the amount of cooling air entering the measuring gun. The temperature inside the furnace is not constant and fluctuates with combustion conditions and coke shedding. If the cooling air intake is fixed, it may lead to resource waste at low temperatures and may not meet cooling requirements at high temperatures. This embodiment of the application, through dynamic adjustment of "temperature higher than the first set value → increase airflow" and "temperature lower than the second set value → decrease airflow," ensures that the supply of cooling air always matches the real-time temperature requirements of the monitoring probe. Specifically, when the head of the monitoring probe experiences a temperature rise due to localized high temperatures in the furnace or the adhesion of coke, the cooling airflow can be automatically increased to quickly remove heat and prevent further temperature increases that could damage the equipment. When the furnace conditions return to normal and the probe temperature decreases, the cooling airflow can be automatically reduced to avoid overcooling and eliminate the need to maintain maximum airflow. Ultimately, this ensures that the temperature of the monitoring probe remains stable within a safe range, which is the temperature range between the second and first set values, guaranteeing that core components such as the probe and radar operate continuously at suitable temperatures.

[0024] Furthermore, the adaptive cooling air system is also used to send a probe withdrawal command to the radar monitoring system when the PLC controller controls the airflow regulating valve to reach its maximum opening, and the temperature inside the monitoring probe head chamber is still higher than a third set value as detected by the temperature sensing element. This causes the monitoring probe to withdraw outside the furnace in response to the probe withdrawal command. The temperature inside the furnace is extremely high, and sudden situations such as fluctuations in combustion conditions or coke adhering to the probe can cause local temperatures to far exceed the conventional cooling capacity. When the airflow regulating valve is opened to its maximum but still cannot control the temperature of the monitoring probe within a safe range, it indicates that the current operating conditions have exceeded the cooling system's capacity limit. Continuing to maintain the monitoring state will directly cause the probe (made of stainless steel) to deform or burn due to high temperature, or the radar probe to fail due to overheating. The electronic components of millimeter-wave / ultrasonic radar are sensitive to temperature, and high temperatures can cause signal drift and hardware damage. Triggering the probe withdrawal command at this time can quickly remove the monitoring probe from the high-temperature furnace environment, fundamentally avoiding permanent damage to the core monitoring components and significantly reducing equipment maintenance costs and replacement frequency.

[0025] Furthermore, the adaptive cooling air system also transmits the temperature signal collected by the temperature sensing element to the display device in the central control room via a local control box, and simultaneously sends a high probe temperature alarm signal to the display device in the central control room. The probe temperature collected by the temperature sensing element is a core indicator of the equipment's health status. However, in traditional monitoring methods, the status of on-site equipment can often only be obtained through on-site observation (such as manual inspection), resulting in information lag and incomplete coverage. In this embodiment, the temperature signal is transmitted in real time to the display device in the central control room via a local control box. Operators can directly view the real-time temperature of a single probe in the central control room, rather than relying solely on on-site feedback, thus achieving information connectivity from on-site equipment status to the overall monitoring in the central control room.

[0026] In a specific embodiment of this application, the furnace coke dropping monitoring device may further include: a drive system; specifically, the drive system includes: an installation component, a drive execution component, and a control component; the installation component includes a fixed bracket adapted to the measuring hole of the furnace, and a guide rail arranged along the axial direction of the measuring hole, the guide rail being symmetrically installed on the upper and lower sides of the measuring hole; further, the drive execution component may include: a motor, a conveyor chain hoist, and a probe fixing seat, the probe fixing seat being slidably engaged with the guide rail, the monitoring probe being connected to the conveyor chain hoist through the probe fixing seat, and the motor driving the monitoring probe to perform linear reciprocating motion along the guide rail by driving the conveyor chain hoist; further, the control component may include: a control unit and a detection unit for detecting coke lumps approaching the monitoring probe; wherein, the control unit is used to receive control signals from the detection unit; and control the motor to start, stop, and rotate according to the control signals from the detection unit, so that the monitoring probe can perform advancing, retracting, and emergency avoidance actions. The drive system in this embodiment can be precisely matched to the installation scenario of the furnace. The fixed bracket adapted to the furnace measuring hole can ensure that the drive system can be firmly fixed in the position of the measuring hole in the furnace, avoiding loosening of the installation due to the vibration of the furnace operation and the forward and backward movement of the monitoring probe. The symmetrically arranged guide rails extend along the axis of the measuring hole, which can provide a guiding reference for the movement of the monitoring probe in the same direction as the furnace insertion, ensuring that the probe can be accurately and vertically inserted into the preset monitoring position in the furnace, avoiding monitoring blind spots or collision damage between the monitoring probe and the furnace inner wall or water-cooled wall caused by installation deviation.

[0027] Figure 3 This is a schematic diagram of the structure of a drive system provided in one embodiment of this application. Figure 3As shown, the system includes the following components: Furnace (left grid area): representing the boiler furnace body, which is the space where the monitoring probe needs to be inserted for monitoring; Monitoring probe (middle long column): the core component of the monitoring device, which needs to be inserted into the furnace to perform the monitoring task; Guide rails (upper and lower long rails): used to support and guide the monitoring probe to move back and forth, ensuring that the monitoring probe moves forward and backward in a straight line; Motor (upper square), the driving power source, providing power for the movement of the monitoring probe; Control cabinet (right box): the control unit, responsible for receiving signals, controlling the motor to start and stop, and realizing the automatic movement of the monitoring probe. The monitoring probe in this embodiment can include the following three states: monitoring state, avoidance / maintenance state, and reset state; wherein, in the monitoring state, the control cabinet sends a propulsion command to the motor, the motor starts and drives the conveyor chain to run, and through the transmission action of the chain, the monitoring probe moves forward along the guide rail and is inserted into the furnace on the left to perform the coke loss monitoring task. In the avoidance / maintenance state, when the control cabinet receives signals such as coke approaching, temperature exceeding the limit, or soot blowing operation, the control cabinet sends an exit command to the motor. The motor reverses, and the conveyor chain hoist moves the probe backward along the guide rail, exiting the furnace and completing the avoidance or maintenance. In the reset state, after the avoidance / maintenance is completed, the motor starts running forward again, and the conveyor chain hoist re-inserts the probe into its original position in the furnace, resuming monitoring. This embodiment of the application can achieve rapid switching of the monitoring probe between monitoring and avoidance, avoiding risks such as coke impact and high-temperature damage; through the linkage of the motor, conveyor chain hoist, and control cabinet, manual operation of the monitoring probe is not required, achieving automatic control of the probe's advance and retreat, improving the system's intelligence and safety.

[0028] Figure 4 This is a schematic diagram of the probe layout in a furnace coke shedding monitoring system provided in one embodiment of this application. Figure 4 As shown, Figure 4 The overall outline represents the boiler's furnace, a three-dimensional enclosed space, typically rectangular in shape; the dots represent monitoring probes, with each dot corresponding to one monitoring device inserted into the furnace. This application embodiment arranges the furnace both circumferentially and axially; regarding the circumferential arrangement (at the same height): Figure 4 Within a certain height plane (e.g.) Figure 4 The solid line in the middle represents the plane, and the dots are evenly distributed around the circumference of the furnace. The probes in the same layer are spaced 5-10 meters apart (this varies depending on the furnace specifications and sootblower arrangement). When arranging the probes, they must avoid the sootblower layer to prevent damage from sootblowing steam. This achieves coverage of a "circumference" at the same height within the furnace. Regarding the circumferential layout (different height layers): Figure 4The right side shows the layered distribution of probes, with a 15-meter interval between the upper and lower layers (the position can be determined according to the actual site conditions), achieving coverage of the entire height range of the furnace from bottom to top. This embodiment of the application achieves comprehensive furnace monitoring without blind spots through the coordinated use of probes at multiple heights and circumferential positions, avoiding areas that cannot be covered by a single probe position. By combining signals from probes at different circumferential and axial positions, the spatial location of coke loss can be accurately pinpointed, providing precise data for subsequent control.

[0029] This application also provides a method for monitoring coke falling in the furnace, applicable to any embodiment of the furnace coke falling monitoring device provided in this application. The device includes at least a radar monitoring system. The method includes: real-time monitoring of coke falling in the furnace using the radar monitoring system, determining the coke falling area and the degree of coke falling within the furnace, and transmitting the coke falling area and the degree of coke falling within the furnace as monitoring data to the control system, so that the control system can control the coke falling in the furnace based on the coke falling area and the degree of coke falling within the furnace.

[0030] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application 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 this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A hearth coke fall monitoring device, characterized by, The device includes at least: a radar monitoring system; wherein... The radar monitoring system is used to monitor the coke falling situation in the furnace in real time, determine the coke falling area and the degree of coke falling within the coke falling area, and transmit the coke falling area and the degree of coke falling within the coke falling area as monitoring data to the control system, so that the control system can control the coke falling situation in the furnace based on the coke falling area and the degree of coke falling within the coke falling area. The radar monitoring system includes: multiple measuring guns; a monitoring probe is installed at the front of each measuring gun; a first millimeter-wave radar and a second millimeter-wave radar are provided at the head of the monitoring probe; the first millimeter-wave radar and the second millimeter-wave radar are respectively located at the upper left and upper right of the monitoring probe; the monitoring probe can be inserted vertically into the furnace.

2. The apparatus of claim 1, wherein, The radar monitoring system is specifically used to monitor the falling of coke blocks inside the furnace in real time using the first millimeter-wave radar and the second millimeter-wave radar.

3. The apparatus of claim 2, wherein, An ultrasonic radar is installed on the top of the measuring gun; The ultrasonic radar is used to monitor the approach of coke blocks within a preset range directly above the monitoring probe in real time. When a coke block is detected approaching within a predetermined distance, a trigger signal is sent to the control system, causing the control system to control the drive system to drive the monitoring probe out of the furnace and drive the monitoring probe back to the original monitoring position after a preset delay.

4. The apparatus according to claim 2, characterized in that, The device further includes: an adaptive cooling air system; the adaptive cooling air system includes: a cooling air source, a pre-filter pressure reducing valve, an airflow regulating valve, a PLC controller, and a temperature measuring element; the cooling air source is instrument compressed air; the pre-filter pressure reducing valve and the airflow regulating valve are connected in series between the cooling air source and the cooling air duct at the tail of the monitoring probe; the temperature measuring element is installed in the cavity at the head of the monitoring probe to monitor the internal temperature of the monitoring probe in real time; the airflow regulating valve is installed on the main compressed air pipe, and its opening is adjusted by the PLC controller in a stepped opening adjustment mode and / or a precise adjustment mode. Section; wherein, the opening adjustment is achieved by the PLC controller in a stepped opening adjustment mode and / or a precise adjustment mode, including: when the temperature in the cavity of the head of the monitoring probe is detected by the temperature measuring element to be higher than a first set value, the PLC controller controls the air volume regulating valve to stepwise increase / gradually increase the opening to increase the air volume of cooling air entering the measuring gun; when the temperature in the cavity of the head of the monitoring probe is detected by the temperature measuring element to be lower than a second set value, the PLC controller controls the air volume regulating valve to stepwise decrease / gradually decrease the opening to reduce the air volume of cooling air entering the measuring gun.

5. The apparatus according to claim 4, characterized in that, The adaptive cooling air system is further configured to send a probe withdrawal command to the radar monitoring system through the PLC controller when the opening of the air volume regulating valve reaches the maximum opening, and when the temperature in the chamber of the head of the monitoring probe is still higher than the third set value as detected by the temperature measuring element, so that the monitoring probe withdraws to the outside of the furnace in response to the probe withdrawal command.

6. The apparatus according to claim 5, characterized in that, The adaptive cooling air system is also used to transmit the temperature signal collected by the temperature measuring element to the display device in the central control room through the local control box, and simultaneously send a high probe temperature alarm signal to the display device in the central control room.

7. The apparatus according to claim 4, characterized in that, The device further includes: a drive system; the drive system includes at least: a control component; the control component includes: a control unit and a detection unit for detecting coke blocks approaching the monitoring probe; wherein the control unit is used to receive control signals from the detection unit; and control the motor to start, stop, and steer according to the control signals from the detection unit, so that the monitoring probe can perform advancing, withdrawing, and emergency avoidance actions.

8. The apparatus according to claim 7, characterized in that, The drive system further includes: a mounting component and a drive execution component; the mounting component includes a fixed bracket adapted to the measuring hole of the furnace, and a guide rail arranged along the axial direction of the measuring hole, the guide rail being symmetrically installed on the upper and lower sides of the measuring hole; the drive execution component includes: a motor, a conveyor chain hoist, and a probe fixing seat, the probe fixing seat being slidably engaged with the guide rail, the monitoring probe being connected to the conveyor chain hoist through the probe fixing seat, and the motor driving the conveyor chain hoist to drive the monitoring probe to perform linear reciprocating motion along the guide rail.

9. A furnace coke dropping monitoring system, characterized in that, The system includes: a plurality of furnace coke dropping monitoring devices as described in any one of claims 1-8 and a distributed control system; wherein the plurality of furnace coke dropping monitoring devices are installed through openings in the water-cooled wall and are arranged at intervals along the circumference and axial direction of the furnace; the distributed control system is used to receive the coke dropping area in the furnace and the degree of coke dropping in the coke dropping area sent by the furnace coke dropping monitoring devices, and to control the coke block falling situation in the furnace based on the coke dropping area in the furnace and the degree of coke dropping in the coke dropping area.

10. A method for monitoring coke loss in a furnace, characterized in that, Applied to the furnace coke loss monitoring device as described in any one of claims 1-8; the method includes: The radar monitoring system monitors the coke falling in the furnace in real time, determines the coke falling area and the degree of coke falling within the coke falling area, and transmits the coke falling area and the degree of coke falling within the coke falling area as monitoring data to the control system, so that the control system can control the coke falling in the furnace based on the coke falling area and the degree of coke falling within the coke falling area.

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