Thermal load balance type blast furnace cooling wall structure

Abstract

The invention provides a heat load balance type blast furnace cooling wall structure, and relates to the technical field of blast furnace smelting equipment. The structure comprises a steel frame, a furnace body and a plurality of cooling walls embedded in the inner wall of the furnace body. A connecting sleeve with a slotted hole is arranged on the outer wall of the furnace body, a rotating rod in threaded connection can accurately adjust advancing and retreating, and a sensor is arranged at the tail end of the rotating rod. The key point is that an intelligent control system is arranged in the control piece, and the system collects data in real time through a sensor array, constructs a thermal load distribution diagram in the furnace and automatically recognizes an abnormal area, so that a corresponding rotating rod is driven, and the position of a cooling wall is finely adjusted. By upgrading a fixed cooling structure into a closed-loop controllable active adjusting system, dynamic, accurate and automatic balance of thermal load distribution in the furnace is realized, local overheating or insufficient cooling is effectively avoided, the operation stability of the blast furnace is remarkably improved, and the service life of the cooling wall is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blast furnace smelting equipment, in particular to a hot load balanced blast furnace cooling wall structure. BACKGROUND

[0002] In the prior art, the hot load management of the blast furnace cooling wall mainly relies on a static or semi-static design. The operation process is: when the furnace body is built, the cooling wall is embedded in the inner wall of the furnace body in a fixed manner and with a preset depth. During operation, the operator may monitor the temperature changes in a large area through temperature sensors installed outside the furnace or in the cooling water circuit. When it is found that the temperature of a certain area is abnormally high, it is usually necessary to stop the furnace or to make macroscopic adjustments by adjusting the global operation parameters (such as air temperature, material distribution), or in the simplest case, only the cooling system can be strengthened or weakened as a whole, and it is not possible to accurately intervene in the specific local overheating point.

[0003] However, the above prior art has obvious deficiencies. First, the position of the cooling wall is fixed and cannot respond to the dynamic changes of the smelting conditions and the distribution of the furnace charge, resulting in uneven local hot load, with some cooling walls being overheated for a long time and others having low utilization. Second, the monitoring means is indirect and rough, and cannot accurately locate the actual hot load of each cooling wall in real time, making the control decision lagging and lacking in pertinence. Finally, the control method is passive and inefficient, relying on the adjustment of global process parameters, which not only reacts slowly, but also may "move the whole body by pulling a single hair", affecting the stability and smoothness of the overall furnace condition in order to solve the local problem. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a hot load balanced blast furnace cooling wall structure, which solves the problem of uneven local hot load caused by the inability to respond to the dynamic changes of the smelting conditions and the distribution of the furnace charge, resulting in some cooling walls being overheated for a long time and others having low utilization.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: a hot load balanced blast furnace cooling wall structure, comprising a steel frame, a control member is installed on the outer wall of the front end of the steel frame, a furnace body is arranged on the top of the steel frame, and a plurality of cooling walls are embedded in the inner wall of the furnace body in a uniform distribution; a connecting sleeve is fixedly installed on the outer wall of the furnace body, and a plurality of slot holes are arranged on the outer wall of the furnace body corresponding to the cooling wall arrangement area; a plurality of rotating rods are threadedly connected to the outer wall of the connecting sleeve, the inner end of each rotating rod passes through the slot hole and threadedly cooperates with the outer circle of the slot hole, and a sensor for detecting temperature or hot load state is installed at the end of each rotating rod; an intelligent control system is built-in in the control member, and the intelligent control system comprises:

[0006] a data acquisition module, configured to drive the sensor array to synchronously collect temperature data of multiple positioning points on the inner wall of the furnace body;

[0007] a data analysis and thermal imaging module, connected to the data acquisition module, configured to calculate heat load and reconstruct a heat load distribution map of the inner wall of the furnace body according to the collected temperature data, and identify hot spot areas and cold spot areas;

[0008] a control decision module, connected to the data analysis and thermal imaging module, configured to generate an adjustment instruction containing a rotating direction and a rotating angle for a corresponding rotating rod according to the identified hot spot areas and cold spot areas;

[0009] an instruction execution and feedback module, connected to the control decision module and driving the rotating rod to act, configured to execute the adjustment instruction to adjust the position of the cooling wall, and feed back an execution state to form a closed-loop control.

[0010] Preferably, the data acquisition module comprises a sensor driving unit, a signal conditioning unit, an analog-to-digital conversion unit and a data packaging unit; the sensor driving unit is configured to synchronously drive all sensors; the signal conditioning unit is configured to filter and amplify the sensor signals; the analog-to-digital conversion unit is configured to convert analog signals into digital temperature data; and the data packaging unit is configured to package the digital temperature data, sensor ID and time stamp into a data frame.

[0011] Preferably, the data analysis and thermal imaging module comprises a heat load calculation unit, a thermal field reconstruction unit and a hot spot identification unit; the heat load calculation unit is based on the formula:

[0012] ;

[0013] converts the temperature value T_i into a heat flux density q_i, where k is a comprehensive heat transfer coefficient and T_coolant is the cooling water inlet temperature; the thermal field reconstruction unit reconstructs a continuous heat load distribution map based on the inverse distance weighted interpolation algorithm; and the hot spot identification unit marks hot spots and cold spots by comparing the heat load value with preset upper and lower threshold values.

[0014] Preferably, the control decision module comprises a strategy generation unit, a position determination unit and an amplitude calculation unit; the position determination unit is configured to determine that the rotating rod corresponding to the cooling wall of the hot spot area performs forward rotation and advancement, and the rotating rod corresponding to the cooling wall of the cold spot area performs reverse rotation and retreat; and the amplitude calculation unit is based on a proportional control algorithm:

[0015] ;

[0016] calculates a rotating angle Δθ, where K_p is a proportional coefficient, Q_actual is an actual heat load value, and Q_target is a threshold value.

[0017] Preferably, the instruction execution and feedback module includes an instruction parsing and driving unit, an action execution unit, and a status monitoring and feedback unit; the instruction parsing and driving unit is used to convert adjustment instructions into pulse signals for driving motors; the action execution unit is a stepper motor or a servo motor connected to the outer end of the rotating rod; the status monitoring and feedback unit is used to provide feedback on the action execution status of the rotating rod through an encoder or limit switch.

[0018] Preferably, the rotational motion of the rotating rod is converted into a linear forward and backward motion along the axial direction of the rotating rod through its threaded engagement with the connecting sleeve and the outer ring of the slot, thereby driving the position of the cooling wall to be finely adjusted.

[0019] Preferably, the sensor (8) is a temperature sensor, and its installation position is related to the heat transfer of the working surface of the corresponding cooling wall.

[0020] Preferably, the inverse distance weighted interpolation algorithm formula used by the thermal field reconstruction unit is:

[0021] ;

[0022] Where w_i=1 / (d_i^p), d_i is the distance from the interpolation point to the i-th cooling wall position, and p is the power parameter.

[0023] Preferably, the control component is installed on the outer wall of the front end of the steel frame for easy operation and maintenance.

[0024] Preferably, in the amplitude calculation unit, for hot spot regions, Q_target is the upper limit threshold Q_max; for cold spot regions, Q_target is the lower limit threshold Q_min.

[0025] This invention provides a heat-balanced blast furnace cooling wall structure. It has the following beneficial effects:

[0026] 1. This invention achieves dynamic and precise adjustment of the cooling wall position and actively balances the heat load. By driving the rotating rod to make precise forward and backward movements through commands issued by the control unit, it can directly change the relative distance or heat transfer conditions between the cooling wall and the high-temperature materials in the furnace. This allows the system to actively and directly intervene in the identified hot or cold areas, pushing the cooling wall in the overheated area into the furnace to enhance the cooling effect, while appropriately withdrawing the cooling wall in the underloaded area. This achieves dynamic balance of the heat load on the entire inner wall of the furnace, avoiding the problem of localized long-term overheating or undercooling.

[0027] 2. This invention establishes a high-resolution real-time heat load sensing and positioning capability. Through sensor arrays distributed on each cooling wall, and data analysis and thermal imaging modules, the system synchronously collects data, calculates heat load, and performs spatial interpolation processing. The system can generate an accurate and continuous heat load distribution map of the furnace hearth inner wall and automatically identify specific overheated (hot spots) and underloaded (cold spots) cooling wall units. This provides an unprecedented visualization capability of local thermal state, enabling operators or automatic systems to clearly grasp the real-time operating conditions of each cooling wall and providing a reliable data foundation for precise control.

[0028] 3. This invention forms an intelligent, efficient, and closed-loop automatic control loop. The system integrates perception, decision-making, and execution. Based on real-time heat load data, the control decision module automatically generates specific instructions, including the rotation direction and angle, for each rotating rod that needs adjustment. The instruction execution and feedback module drives the motor to accurately complete the action and confirms the execution result. This closed-loop control system can quickly respond to changes in the furnace and automatically execute adjustment strategies without relying on inefficient large-scale adjustments of global parameters or furnace shutdown interventions. This significantly improves the timeliness, pertinence, and automation level of regulation, ensuring the long-term stable operation of the blast furnace. Attached Figure Description

[0029] Fig. 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Fig. 2 This is a schematic diagram of the overall side structure of the present invention;

[0031] Fig. 3 This is a schematic diagram of the internal structure of the furnace body of the present invention;

[0032] Fig. 4 This is a schematic diagram of the control module structure of the present invention;

[0033] Fig. 5 This is a schematic diagram of the control flow of the control component of the present invention.

[0034] The components include: 1. Steel frame; 2. Control components; 3. Furnace body; 4. Connecting sleeve; 5. Rotating rod; 6. Cooling wall; 7. Slots; and 8. Sensors. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figs. 1-3As shown, this embodiment of the invention provides a heat load balanced blast furnace cooling wall structure, including a steel frame 1. A control component 2 is installed on the outer wall of the front end of the steel frame 1. A furnace body 3 is provided on the top of the steel frame 1. A connecting sleeve 4 is installed on the outer wall of the furnace body 3. A uniformly distributed cooling wall 6 is embedded in the inner wall of the furnace body 3. A uniformly distributed slot 7 is provided on the outer wall of the furnace body 3. A uniformly distributed rotating rod 5 is threaded to the outer wall of the connecting sleeve 4. The rotating rod 5 is threaded to the outer ring of the slot 7. A sensor 8 is installed at one end of the rotating rod 5.

[0037] It should be further explained that the steel frame 1 serves as an overall support frame, with a control component 2 installed on its front outer wall. A furnace body 3 is installed on the top of the steel frame 1, and a connecting sleeve 4 is fixedly installed on the outer wall of the furnace body 3. Multiple evenly distributed cooling walls 6 are embedded in the inner wall of the furnace body 3 for cooling the high-temperature areas inside the furnace. In the area corresponding to the arrangement of the cooling walls on the outer wall of the furnace body 3, evenly distributed slots 7 are opened. Multiple rotating rods 5 are threadedly connected to the outer wall of the connecting sleeve 4. The inner end of the rotating rod 5 passes through the slot 7 and forms a threaded engagement with the outer ring of the slot 7, thereby enabling the rotating rod 5 to be adjusted forward and backward along its axial direction. A sensor 8 is installed at the end of each rotating rod 5 for real-time detection of the temperature or heat load status at the corresponding position. Through the above structure, the operator or control system can rotate the corresponding rotating rod 5 according to the data fed back by the sensor 8, so as to move it inward or outward, thereby indirectly adjusting the relative distance or heat transfer conditions between the cooling wall 6 and the high-temperature materials inside the furnace, realizing the dynamic balance of heat load in different areas of the blast furnace, and extending the service life of the cooling wall and the furnace body.

[0038] refer to Figs. 4-5 The control unit 2 includes a data acquisition module, a data analysis and thermal imaging module, a control decision module, and an instruction execution and feedback module.

[0039] The data acquisition module is responsible for periodically or in real time waking up and driving the sensor array 8 arranged at the ends of each rotating rod 5 to synchronously acquire the raw temperature signals of multiple positioning points on the inner wall of the blast furnace. The module preprocesses the acquired raw signals through the signal conditioning unit to filter out noise interference, and then converts the analog signals into digital temperature data through the analog-to-digital conversion unit. Finally, the data packaging unit integrates the temperature data of all channels into a data frame of a unified format and transmits it to the data analysis and thermal imaging module.

[0040] The data acquisition module includes a sensor driving unit, a signal conditioning unit, an analog-to-digital conversion unit, and a data packaging unit.

[0041] The sensor driving unit consists of a microcontroller and a driving circuit within the control unit 2. The microcontroller generates timing pulses according to a preset sampling frequency, and the driving circuit simultaneously activates all sensors 8 to perform temperature measurement. This design ensures the synchronization of all data points in time, laying the foundation for the subsequent construction of an accurate temperature field distribution map.

[0042] The signal conditioning unit is connected between the sensor 8 and the analog-to-digital converter unit. It consists of a filtering circuit and an amplification circuit. The weak electrical signal output by the sensor 8 first passes through the filtering circuit to suppress electromagnetic noise in the field, and then enters the amplification circuit to adjust the signal amplitude to the optimal range suitable for sampling by the analog-to-digital converter unit.

[0043] The analog-to-digital conversion unit receives conditioned analog voltage signals. Its core is a high-precision multi-channel analog-to-digital converter that sequentially converts the analog voltage signals of each sensor channel into corresponding digital quantities, which directly correspond to the temperature values ​​measured by the sensors.

[0044] The data packaging unit is implemented by a microcontroller. It receives digital temperature data from all channels of the analog-to-digital conversion unit, adds its corresponding sensor ID (bound to the specific position of the rotating rod 5 and cooling wall 6) and a timestamp to each data point, and then packages it into a structured data frame, which is sent to the data analysis and thermal imaging module through the internal bus.

[0045] The data analysis and thermal imaging module receives temperature data frames uploaded by the data acquisition module and converts discrete temperature point data into heat load values ​​characterizing the heating intensity of the cooling wall through the heat load calculation unit. Subsequently, the thermal field reconstruction unit uses a spatial interpolation algorithm to reconstruct the heat load values ​​of all six locations on the cooling wall into a continuous two-dimensional heat load distribution map, representing the heat load field of the inner wall of the blast furnace hearth. Finally, the hot spot identification unit scans and analyzes the distribution map to automatically locate the local overheated areas (hot spots) where the heat load exceeds the safety threshold and the areas with excessively low loads (cold spots).

[0046] The data analysis and thermal imaging module includes a heat load calculation unit, a thermal field reconstruction unit, and a hotspot identification unit.

[0047] The heat load calculation unit, based on the principles of heat transfer, converts the measured temperature value T_i from the i-th sensor into heat flux density q_i, specifically as follows:

[0048] ;

[0049] Where k represents the overall heat transfer coefficient, which is pre-calibrated based on the material, structure, and cooling water conditions of the cooling wall 6, and T_coolant represents the inlet temperature of the cooling water.

[0050] The heat load calculation unit converts the indirect parameter of temperature into a physical quantity that more directly reflects the working load of the cooling wall.

[0051] The thermal field reconstruction unit executes a spatial interpolation algorithm, taking the spatial coordinates (x_i, y_i, z_i) of each cooling wall 6 and its calculated heat load value q_i as input. (x_i, y_i, z_i) are determined based on the installation position of each cooling wall 6 in the blast furnace. The inverse distance weighted interpolation method is used to calculate the heat load value Q(x, y, z) of each unknown point P(x, y, z) on the inner wall surface of the furnace. The specific formula is as follows:

[0052] ;

[0053] Where w_i=1 / (d_i^p) represents the weight, d_i represents the distance from point P to the i-th cooling wall position 6, and p=2 represents the power parameter.

[0054] The thermal field reconstruction unit generates a smooth and continuous heat load distribution map by performing calculations on the grid points of the entire furnace wall surface.

[0055] The hotspot identification unit performs image processing and analysis on the generated heat load distribution map, sets an upper limit threshold Q_max and a lower limit threshold Q_min, marks all areas in the distribution map with heat load values ​​higher than Q_max as "hotspots", marks areas with heat load values ​​lower than Q_min as "colds", and outputs the coordinate range of these areas and the ID list of the marked cooling walls 6.

[0056] The control decision module receives hot and cold spot information from the hot spot identification unit. Its strategy generation unit generates specific adjustment directions and amplitudes for each cooling wall 6 that needs adjustment based on a preset equalization control strategy. The adjustment direction is determined by the position determination unit: for the cooling wall 6 in the hot spot area, the decision is to advance the rotating rod 5; for the cooling wall 6 in the cold spot area, the decision is to retract the rotating rod 5. The adjustment amplitude is dynamically calculated by the amplitude calculation unit based on the degree of heat load deviation from the threshold, and finally forms a control instruction set containing the rotating rod ID, rotation direction, and rotation angle.

[0057] The control decision module includes a strategy generation unit, a position determination unit, and an amplitude calculation unit.

[0058] After receiving the hot / cold spot list, the strategy generation unit immediately initiates the control process, calling the position determination unit and amplitude calculation unit for each cooling wall 6 in the list, summarizing the control decisions of all individuals, and integrating them into a control command sequence to ensure that the adjustment actions are carried out in an orderly manner and avoid excessive instantaneous disturbances.

[0059] For an input cooling wall ID, if the cooling wall exists in the hot spot list, the position determination unit outputs an action command of "forward rotation", corresponding to the rotating rod 5 being pushed into the furnace; if it exists in the cold spot list, the position determination unit outputs an action command of "reverse rotation", corresponding to the rotating rod 5 being pulled back out of the furnace.

[0060] The amplitude calculation unit calculates the required rotation angle Δθ of the rotating rod 5 based on the deviation between the actual value of the heat load and the threshold value, using a proportional control algorithm, specifically expressed as follows:

[0061] ;

[0062] Wherein, Q_actual represents the actual heat load value at point 6 of the cooling wall; for hot spots, Q_target is Q_max, and for cold spots, Q_target is Q_min; K_p represents the proportional coefficient, which is the angle of rotation required per unit heat load deviation. This value is pre-calibrated through mechanical transmission relationship and desired adjustment sensitivity. The larger the heat load deviation, the larger the required rotation angle, thus achieving precise adjustment.

[0063] The instruction execution and feedback module is responsible for converting the abstract instructions issued by the control decision module into specific physical actions. The instruction parsing and drive unit receives the control instruction set and parses it into pulse signals to be sent to the designated stepper motor or servo motor, driving the corresponding rotating rod 5 to rotate precisely at a predetermined angle. The action execution unit is the controlled motor, which drives the rotating rod 5 to rotate. After the action is completed, the status monitoring and feedback unit reads the encoder or limit switch signal of the motor in real time to confirm whether the rotating rod 5 has reached the correct position and feeds back the final status to the system, forming a closed-loop control.

[0064] The instruction execution and feedback module includes an instruction parsing and driving unit, an action execution unit, and a status monitoring and feedback unit.

[0065] The instruction parsing and driving unit consists of a motor drive circuit and supporting software within the control unit 2. It is used to receive control instructions (such as: rotating rod #A15, rotating forward, 120°). The software converts the instruction into a corresponding number of pulse signals and direction level signals. The drive circuit amplifies these weak electrical signals and outputs them to the action execution unit connected to the rotating rod 5 with sufficient power and voltage.

[0066] The stepper motor or servo motor installed on the outer end of the rotating rod 5, when receiving pulse and direction signals from the drive unit, rotates the stepper motor a corresponding number of steps (angles) and transmits the rotational motion to the rotating rod 5 directly connected to it through its internal reduction mechanism. Since the rotating rod 5 is threadedly connected to the connecting sleeve 4 and the outer ring of the slot 7, the rotational motion of the motor is converted into the linear forward and backward motion of the rotating rod 5, thereby realizing the fine adjustment of the position of the cooling wall 6.

[0067] The status monitoring and feedback unit includes a rotary encoder mounted on the motor or a limit switch mounted at the end of the stroke. When the motor rotates, the encoder provides real-time feedback on the actual rotation angle of the shaft. The system compares this with the command angle to ensure that the operation is in place. When the rotating rod 5 moves to the mechanical limit, the limit switch is triggered and sends a signal. This unit feeds back "execution completed" or "fault" signals to the control decision module and the data acquisition module. The control decision module updates the system status accordingly, while the data acquisition module starts a new round of data acquisition after a short period of stabilization to evaluate the control effect and thus start the next control cycle.

[0068] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat load equalized blast furnace stave structure comprising a steel frame (1), characterized in that: The front end outer wall of the steel frame (1) is provided with a control element (2), the top of the steel frame (1) is provided with a furnace body (3), and the inner wall of the furnace body (3) is embedded with a plurality of cooling walls (6) uniformly distributed; the outer wall of the furnace body (3) is fixedly provided with a connecting sleeve (4), and the outer wall of the furnace body (3) is provided with a plurality of uniformly distributed slot holes (7) corresponding to the arrangement area of the cooling wall; the outer wall of the connecting sleeve (4) is threadedly connected with a plurality of rotating rods (5), the inner end of the rotating rod (5) penetrates through the slot hole (7) and threadedly cooperates with the outer circle of the slot hole (7), and the end of each rotating rod (5) is provided with a sensor (8) for detecting temperature or thermal load state; the control element (2) is built-in with an intelligent control system, and the intelligent control system comprises: a data acquisition module for driving the sensor (8) array to synchronously acquire temperature data of a plurality of positioning points of the inner wall of the furnace body; a data analysis and thermal imaging module connected with the data acquisition module, for calculating thermal load and reconstructing a thermal load distribution map of the inner wall of the furnace body according to the acquired temperature data, and identifying hot spot areas and cold spot areas; a control decision module connected with the data analysis and thermal imaging module, for generating an adjusting instruction containing a rotating direction and a rotating angle for the corresponding rotating rod (5) according to the identified hot spot areas and cold spot areas; an instruction execution and feedback module connected with the control decision module and driving the rotating rod (5) to act, for executing the adjusting instruction to adjust the position of the cooling wall (6) and feeding back the execution state to form a closed-loop control.

2. A heat load equalized blast furnace stave structure according to claim 1, characterized in that: The data acquisition module comprises a sensor driving unit, a signal conditioning unit, an analog-to-digital conversion unit and a data packaging unit; the sensor driving unit is used for synchronously driving all sensors (8); the signal conditioning unit is used for filtering and amplifying the sensor signals; the analog-to-digital conversion unit is used for converting analog signals into digital temperature data; and the data packaging unit is used for packaging the digital temperature data, sensor ID and time stamp into a data frame.

3. The heat load equalized blast furnace stave structure according to claim 1, wherein: The data analysis and thermal imaging module comprises a thermal load calculation unit, a thermal field reconstruction unit and a hot spot identification unit; the thermal load calculation unit converts the temperature value T_i into the heat flux density q_i based on the formula: ； wherein k is the comprehensive heat transfer coefficient, and T_coolant is the cooling water inlet temperature; the thermal field reconstruction unit reconstructs a continuous thermal load distribution map based on the inverse distance weighted interpolation algorithm; and the hot spot identification unit marks the hot spots and cold spots by comparing the thermal load value with the preset upper and lower threshold values.

4. The heat load equalized blast furnace stave structure of claim 1, wherein: The control decision module comprises a strategy generation unit, a position determination unit and an amplitude calculation unit; the position determination unit is used for determining that the rotating rod (5) corresponding to the cooling wall of the hot spot area performs forward rotation and advancement, and the rotating rod (5) corresponding to the cooling wall of the cold spot area performs reverse rotation and retreat; and the amplitude calculation unit calculates the rotating angle Δθ based on the proportional control algorithm: ; wherein K_p is the proportional coefficient, Q_actual is the actual thermal load value, and Q_target is the threshold value.

5. The heat load equalized blast furnace stave structure as claimed in claim 1 wherein: The instruction execution and feedback module comprises an instruction analysis and driving unit, an action execution unit and a state monitoring and feedback unit; the instruction analysis and driving unit is used for converting the adjustment instruction into a pulse signal for driving the motor; the action execution unit is a stepping motor or a servo motor connected to the outer end of the rotating rod (5); the state monitoring and feedback unit is used for feeding back the action execution state of the rotating rod (5) through an encoder or a limit switch.

6. A heat load equalized blast furnace stave structure as claimed in claim 1, wherein: The rotating movement of the rotating rod (5) is converted into linear reciprocating movement along the axial direction of the rotating rod (5) through the thread cooperation of the rotating rod (5) with the connecting sleeve (4) and the outer circle of the slot hole (7), thereby driving the position fine adjustment of the cooling wall (6).

7. The heat load equalized blast furnace stave structure as claimed in claim 1 wherein: The sensor (8) is a temperature sensor, and the installation position thereof is associated with the heat transfer of the working surface of the corresponding cooling wall (6).

8. The thermal load equalizing blast furnace stave structure of claim 1 wherein: The control member (2) is installed on the outer wall of the front end of the steel frame (1), facilitating operation and maintenance.

9. The heat load equalized blast furnace stave structure of claim 3, wherein: The inverse distance weighted interpolation algorithm formula adopted by the thermal field reconstruction unit is as follows: ； wherein w_i=1 / (d_i^p), d_i is the distance from the interpolation point to the position of the i-th cooling wall, and p is a power parameter.

10. The heat load equalized blast furnace stave structure of claim 4, wherein: In the amplitude calculation unit, for the hot spot area, Q_target is the upper threshold Q_max; and for the cold spot area, Q_target is the lower threshold Q_min.

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