Soot blower control method and device, storage medium and computer equipment

Abstract

The invention discloses a soot blower control method and device, a storage medium and computer equipment, and relates to the technical field of air pre-heater maintenance. The method is used for controlling a soot blower of the air pre-heater and comprises the steps that when the soot blower runs, the blowing air pressure value of the soot blower and the real-time opening value of a control valve of the soot blower are monitored, and the blowing air pressure value is compared with a preset air pressure upper limit value; when the blowing air pressure value is lower than the air pressure upper limit value, an air pressure difference value between the blowing air pressure value and a preset air pressure set value is calculated, and a control valve opening target value of the control valve is determined based on the opening value and the air pressure difference value; and adjusting the opening degree of the control valve of the soot blower according to the control valve opening degree target value, so that the opening degree value of the control valve is maintained at the control valve opening degree target value, and the blowing air pressure value of the soot blower approaches to the air pressure set value. According to the scheme, the soot blowing effect on the air pre-heater can be improved.

Description

Technical Field

[0001] This invention relates to the field of air preheater maintenance technology, and in particular to a control method, device, storage medium, and computer equipment for a soot blower. Background Technology

[0002] Air preheaters are key energy-saving devices in boiler systems of thermal power plants. By recovering waste heat from flue gas to heat combustion air, they can effectively reduce boiler exhaust temperature and reduce energy waste. Soot blowers, as core auxiliary equipment to ensure the stable operation of air preheaters, play a crucial role in removing accumulated ash from the surfaces of heat storage elements inside the air preheater through soot blowing, thus preventing ash buildup from increasing thermal resistance and affecting heat exchange efficiency.

[0003] The stability of the soot blowing pressure in the air preheater directly determines the ash removal effect. If the soot blowing pressure fluctuates too much, it may not only cause ash residue on the surface of the heat storage element, but also cause excessive erosion of the equipment due to excessive pressure, thereby significantly reducing the heat transfer efficiency of the air preheater.

[0004] However, existing control of soot blowers mostly relies on manual adjustment of their valve opening, which has problems such as low air pressure control accuracy and lag response. This can easily lead to air pressure exceeding the upper limit or deviating from the target value, resulting in poor soot blowing effect and directly affecting the operating efficiency of the air preheater and the overall safety of the unit. Summary of the Invention

[0005] In view of this, this application provides a control method, device, storage medium and computer equipment for a soot blower, the main purpose of which is to solve the technical problem of low soot blowing effect in air preheaters.

[0006] According to a first aspect of the present invention, a method for controlling a soot blower is provided for controlling a soot blower in an air preheater, the method comprising: During the operation of the soot blower, the blowing air pressure value of the soot blower and the real-time opening value of the soot blower damper are monitored, and the blowing air pressure value is compared with the preset upper limit value of the air pressure. When the blowing air pressure value is lower than the upper limit of the air pressure, the air pressure difference between the blowing air pressure value and the preset air pressure setting value is calculated, and the target value of the valve opening is determined based on the opening value and the air pressure difference. Adjust the opening of the sootblower's damper according to the target damper opening value, so that the damper opening value is maintained at the target damper opening value, so that the blowing air pressure value of the sootblower approaches the set air pressure value.

[0007] In an optional embodiment, the method of monitoring the blowing air pressure value of the soot blower includes: acquiring the air pressure value in the soot blowing tube in real time based on the air pressure sensor installed at the soot blowing tube in the soot blower, and determining the air pressure value as the blowing air pressure value.

[0008] In an optional embodiment, after comparing the blowing air pressure value with a preset upper limit value, the method further includes: when the blowing air pressure value is higher than the upper limit value, adjusting the opening value of the soot blower's damper to zero.

[0009] In an optional embodiment, the air pressure setting is 1.5 MPa.

[0010] In an optional embodiment, the sootblower has a preset operating time limit, characterized in that the method further includes: monitoring the operating time of the sootblower to determine the cumulative operating time of the sootblower since its start; and adjusting the opening value of the sootblower's damper to zero at a preset damper adjustment speed when there is a preset time interval between the cumulative operating time and the operating time limit.

[0011] In an optional embodiment, after adjusting the opening value of the sootblower's valve to zero at a preset valve adjustment speed during a preset time interval between the cumulative running time and the running time limit, the method further includes: controlling the corresponding drain valve of the sootblower to start running to remove condensate from the sootblower's blowing pipe; and controlling the drain valve to stop running after a preset drainage time after the drain valve starts running.

[0012] In an optional embodiment, when the sootblower is running, after monitoring the blowing air pressure value of the sootblower and the real-time opening value of the sootblower's damper, and comparing the blowing air pressure value with a preset upper limit value, the method includes: when the blowing air pressure value is higher than the upper limit value, transmitting an overpressure alarm message to a remote host computer.

[0013] According to a second aspect of the present invention, a control device for a soot blower is provided, characterized in that the device comprises: The parameter acquisition module is used to monitor the blowing air pressure value of the sootblower and the real-time opening value of the sootblower's damper when the sootblower is running, and compare the blowing air pressure value with the preset upper limit value of the air pressure. The opening calculation module is used to calculate the pressure difference between the blowing air pressure value and the preset air pressure setting value when the blowing air pressure value is lower than the upper limit value of the air pressure, and to determine the target value of the valve opening based on the opening value and the pressure difference value. The opening adjustment module is used to adjust the opening of the sootblower's valve according to the valve opening target value, so that the valve opening value is maintained at the valve opening target value, so that the blowing air pressure value of the sootblower approaches the air pressure setting value.

[0014] According to a third aspect of the present invention, a storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the above-described control method for a soot blower.

[0015] According to a fourth aspect of the present invention, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described control method for a soot blower.

[0016] This invention provides a control method, device, storage medium, and computer equipment for a sootblower. By real-time monitoring of the blowing air pressure and comparing it with the upper limit, combined with the pressure difference between the sootblower's blowing air pressure and a preset pressure setting, as well as the sootblower's damper opening value, a target damper opening value is determined. This allows for precise adjustment of the damper opening to stabilize the blowing air pressure. This avoids interruptions in sootblowing or equipment damage caused by exceeding the upper pressure limit. Furthermore, by adjusting the damper opening to compensate for pressure deviations, it solves the problems of low precision and slow response in manual adjustment, improving the sootblowing effect on the air preheater and ensuring continuous and stable sootblowing operations.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 A flowchart illustrating a control method for a soot blower provided in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the structure of a control device for a soot blower provided in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the structure of a computer device for executing a soot blower control method provided by an embodiment of the present invention is shown. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0020] Air preheaters are key energy-saving devices in boiler systems of thermal power plants. By recovering waste heat from flue gas to heat combustion air, they can effectively reduce boiler exhaust temperature and reduce energy waste. Sootblowers, as core auxiliary equipment ensuring stable operation of the air preheater, play a crucial role in removing accumulated ash from the surfaces of the heat storage elements within the air preheater through soot blowing, preventing increased thermal resistance and reduced heat exchange efficiency. The stability of the soot blowing pressure directly determines the ash removal effect. Excessive fluctuations in soot blower pressure can lead to ash residue on the surface of the heat storage elements and excessive erosion of the equipment due to high pressure, significantly reducing the heat transfer efficiency of the air preheater. However, current sootblower control relies heavily on manual adjustment of the valve opening, resulting in low pressure control accuracy and lag response. This can easily lead to pressure exceeding the upper limit or deviating from the target value, resulting in poor soot blowing performance and directly impacting the operating efficiency of the air preheater and the overall safety of the unit.

[0021] To address the above problems, in one embodiment, such as Figure 1 As shown, a method for controlling a soot blower is provided. Taking the control of the soot blower in an air preheater as an example, the method includes the following steps: 101. When the soot blower is running, monitor the blowing air pressure value of the soot blower and the real-time opening value of the soot blower's damper, and compare the blowing air pressure value with the preset upper limit value of the air pressure.

[0022] The regulating valve, as a flow control component in the sootblower's air blowing pipe, directly corresponds to the cross-sectional area of ​​the air blowing channel. When the regulating valve opening increases, the cross-sectional area of ​​the air blowing channel increases, reducing the flow resistance of the sootblowing medium (steam or compressed air), increasing the flow rate of the medium through the pipe per unit time, and consequently raising the air blowing pressure within the sootblowing pipe. Conversely, when the regulating valve opening decreases, the cross-sectional area of ​​the air blowing channel decreases, increasing the flow resistance, reducing the flow rate, and consequently lowering the air blowing pressure. The regulating valve opening value represents the percentage of the valve's open position. A 100% opening value indicates the valve is fully open; a 0% opening value indicates the valve is fully closed; and a 50% opening value indicates the valve is partially open.

[0023] Specifically, a pressure sensor installed at the sootblowing pipe of the sootblower can collect the air pressure value in the sootblower in real time and determine this air pressure value as the sootblower's blowing pressure value. Simultaneously, the opening value of the regulating valve at various time points during sootblower operation can be monitored and stored locally. Here, the upper limit of the air pressure can be 2.1 MPa to avoid overpressure in the sootblower; the specific value can be determined according to the actual situation.

[0024] Furthermore, when the blowing air pressure of the sootblower is higher than the upper limit of the air pressure, in order to prevent the sootblower from overpressure, the opening value of the sootblower's regulating valve can be gradually adjusted to zero; after a certain period of time, the sootblower can be restarted and its regulating valve opening can be increased to continue the sootblowing work.

[0025] Furthermore, when the blowing air pressure of the sootblower exceeds the upper pressure limit, an overpressure alarm can be transmitted to a remote host computer. This host computer can be a computer terminal at the power plant's control center, allowing relevant personnel to determine the operating status of the air preheater and sootblower.

[0026] 102. When the blowing air pressure value is lower than the upper limit of the air pressure, calculate the air pressure difference between the blowing air pressure value and the preset air pressure setting value, and determine the target value of the valve opening based on the opening value and the air pressure difference.

[0027] The air pressure setting value can be the preset reasonable air pressure value of the soot blower when performing soot blowing work, and its value can be 1.5 MPa.

[0028] Specifically, the difference between the blowing air pressure and the set air pressure value can be calculated to obtain the air pressure difference value. Here, the blowing air pressure value can be collected in real time, and the difference between the blowing air pressure value and the set air pressure value at each moment during the operation of the sootblower can be calculated to obtain the air pressure difference value corresponding to each moment. Further, proportional-integral-derivative (PID) adjustment can be performed on the opening value and the air pressure difference value to obtain the target value of the valve opening. Here, the proportional parameter of the PID adjustment is 0.5, and the integral parameter is 130. Here, the time interval between adjacent moments can be 1 second, and its specific length can be determined according to the actual situation.

[0029] Here, the opening adjustment value of the sootblower's damper can be calculated based on Formula 1: Δu(k)=Kp×[e(k)-e(k-1)]+Ki×e(k)+Kd×[e(k)-2e(k-1)] (1) Where k is time, Δu(k) is the opening adjustment value, Kp is the proportional parameter, Ki is the integral parameter, Kd is the derivative parameter, e(k) is the current air pressure difference, e(k-1) is the air pressure difference in the previous calculation cycle of the PID control, and u(k-1) is the opening value of the valve in the previous calculation cycle.

[0030] Furthermore, the target value of the valve opening can be calculated based on Formula 2: u(k)=u(k-1)+Δu(k)(2) Where u(k) is the target value of the valve opening, Δu(k) is the opening adjustment value, and u(k-1) is the valve opening value in the previous calculation cycle.

[0031] 103. Adjust the opening of the sootblower's damper according to the target opening value, so that the opening value of the damper is maintained at the target opening value, so that the blowing air pressure value of the sootblower approaches the set air pressure value.

[0032] The sootblower control method provided in this embodiment monitors the blowing air pressure in real time and compares it with the upper limit of the air pressure. It then uses proportional-integral-derivative (PID) control to obtain the target value of the valve opening, achieving precise adjustment of the sootblower valve opening to stabilize the blowing air pressure. This avoids sootblowing interruptions or equipment damage caused by air pressure exceeding the upper limit, and quickly compensates for air pressure deviations through PID control. It solves the problems of low precision and slow response of manual adjustment, improves the sootblowing effect on the air preheater, and ensures continuous and stable sootblowing operation of the air preheater.

[0033] In an optional embodiment, the sootblower has a preset operating time limit, which can be 1 hour; further, the method also includes: monitoring the operating time of the sootblower to determine the cumulative operating time of the sootblower since its start; specifically, the operating time can be calculated cumulatively from the start of the sootblower's operation.

[0034] Furthermore, when the cumulative running time is less than or equal to the running time limit by a preset time length, the opening value of the sootblower's damper is adjusted to zero at a preset damper adjustment speed. Specifically, when the cumulative running time approaches the running time limit, and the time difference between the cumulative running time and the running time limit is less than or equal to the preset time length, a countdown method is used to gradually reduce the opening of the sootblower's damper by connecting the damper's closing logic, so as to effectively avoid the occurrence of overpressure caused by the lag in the automatic closing of the regulating valve at the end of sootblowing.

[0035] Here, there can be multiple soot blowers in the air preheater; furthermore, a one-button start control program can be set in the soot blower control system to change the original method of starting multiple soot blowers one by one to a one-button start method, and the status of each soot blower can be centrally integrated into an operation window, so that the operator can set the soot blowing time of each soot blower according to the actual situation.

[0036] Furthermore, the control system of the sootblower can be configured to simultaneously control multiple sootblowers to perform cyclic sootblowing operations. Through preset automatic sequence logic, the sootblowing operation can be seamlessly connected, achieving the effect of uninterrupted continuous sootblowing by multiple sootblowers, thereby significantly reducing the monitoring pressure and operational burden on operators during the sootblowing process of the air preheater.

[0037] Furthermore, as multiple sootblowers gradually cease their sootblowing operation, when the last sootblower is about to reach its operating time limit, its valve opening can be adjusted to zero at a preset valve adjustment speed to terminate the air preheater's sootblowing process. Additionally, the load of the power generation equipment where the air preheater is located can be monitored in real time. When the load is within a preset allowable range, the sootblowers are automatically triggered to execute the aforementioned sootblowing process. This periodic sootblowing effectively removes accumulated ash from the air preheater's heating surfaces, maintaining good heat transfer performance, thereby improving energy efficiency, reducing energy loss, and saving operating costs for the enterprise.

[0038] Furthermore, after the opening of the sootblower's regulating valve is adjusted to zero, the method further includes: controlling the corresponding drain valve of the sootblower to start operation in order to remove the condensate in the sootblower's blowing pipe; wherein, the drain valve is usually installed on the sootblower's blowing pipe and related pipelines of the air preheater sootblower, and its core function is to drain the residual condensate in the pipeline to avoid the condensate affecting the stability of the sootblowing pressure or causing water hammer.

[0039] Furthermore, after the drain valve starts operating, it is controlled to stop operating after a preset drainage time to discharge condensate from the sootblowing pipe, preventing residual moisture from affecting the stability of the next sootblowing pressure, preventing liquid damage to the equipment, and ensuring the sootblowing efficiency when the sootblower starts again. The embodiment provided in this application can avoid the risk of overpressure at the end of sootblowing by preset operating time and gradually closing the regulating valve before the end of sootblowing; furthermore, the one-button start and multi-unit circulating sootblowing design can significantly reduce the burden of personnel operation and monitoring, and combined with load monitoring to automatically trigger sootblowing, it improves the automation and intelligence level of sootblowing work.

[0040] The sootblower control method provided in this embodiment can accurately control the sootblower's air pressure by real-time monitoring and PID regulation, avoiding sootblowing interruptions and equipment damage caused by overpressure, and solving the problems of low precision and slow response of manual adjustment. Furthermore, a one-button start and countdown-linked gate closing logic is added to avoid the risk of overpressure at the end of sootblowing, realizing the automation and intelligence level of sootblowing operations, and effectively improving the sootblowing effect on the air preheater.

[0041] Furthermore, as a specific implementation of the method shown in the figure, this embodiment provides a control device for a soot blower, such as... Figure 2 As shown, the device includes: a parameter acquisition module 21, an opening calculation module 22, and an opening adjustment module 23.

[0042] The parameter acquisition module 21 can be used to monitor the blowing air pressure value of the sootblower and the real-time opening value of the sootblower's damper when the sootblower is running, and compare the blowing air pressure value with the preset upper limit value of the air pressure. The opening calculation module 22 can be used to calculate the pressure difference between the blowing air pressure value and the preset air pressure setting value when the blowing air pressure value is lower than the upper limit value of the air pressure, and determine the target value of the valve opening based on the opening value and the pressure difference value. The opening adjustment module 23 can be used to adjust the opening of the sootblower's damper according to the damper opening target value, so that the damper opening value is maintained at the damper opening target value, so that the sootblower's blowing air pressure value approaches the air pressure setting value. In a specific application scenario, the parameter acquisition module 21 can be used to collect the air pressure value in the soot blowing tube in real time based on the air pressure sensor set in the soot blowing tube in the soot blower, and determine the air pressure value as the blowing air pressure value.

[0043] In a specific application scenario, the parameter acquisition module 21 can be used to adjust the opening value of the soot blower's damper to zero when the blowing air pressure value is higher than the upper limit of the air pressure value.

[0044] In specific application scenarios, the parameter acquisition module 21 can be used to send overpressure alarm information to a remote host computer when the blowing air pressure value is higher than the upper limit value.

[0045] In a specific application scenario, the opening adjustment module 23 can be used to monitor the running time of the sootblower and determine the cumulative running time of the sootblower since its start; when the cumulative running time is separated from the running time limit by a preset time length, the opening value of the sootblower's valve is adjusted to zero at a preset valve adjustment speed.

[0046] In a specific application scenario, the opening adjustment module 23 can be used to control the start-up of the drain valve corresponding to the soot blower to remove condensate from the soot blowing pipe of the soot blower; after the drain valve starts running, after a preset drainage time, the drain valve is controlled to stop running.

[0047] It should be noted that other corresponding descriptions of the functional units involved in the control device for a sootblower provided in this embodiment can be found in [reference needed]. Figure 1 The corresponding descriptions in [the document] will not be repeated here.

[0048] Based on the above, Figure 1Accordingly, this embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the above-described method. Figure 1 The control method of the soot blower shown.

[0049] Based on this understanding, the technical solution of this application can be embodied in the form of a software product. The software product to be identified can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various implementation scenarios of this application.

[0050] Based on the above, Figure 1 The method shown, and Figure 2 The control device embodiment of the soot blower shown is designed to achieve the above objectives, such as... Figure 3 As shown, this embodiment also provides a computer device for controlling a sootblower, which can be a personal computer, server, smartphone, tablet computer, smartwatch, or other network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store computer programs and an operating system; the processor is used to execute the computer program to implement the above-mentioned... Figure 1 The method shown.

[0051] Optionally, the computer device may also include internal memory, a communication interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, a display screen, and input devices such as a keyboard. The communication interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0052] Those skilled in the art will understand that the computer device structure for recognizing operational actions provided in this embodiment does not constitute a limitation on the computer device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0053] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the aforementioned computer hardware and the software resources to be identified, supporting the operation of information processing programs and other software and / or programs to be identified. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing computer device.

[0054] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented using software plus necessary general-purpose hardware platforms, or it can be implemented in hardware. By applying the technical solution of this application, firstly, during the operation of the sootblower, the blowing air pressure value of the sootblower and the real-time opening value of the sootblower's damper are monitored, and the blowing air pressure value is compared with a preset upper limit value. Then, when the blowing air pressure value is lower than the upper limit value, the pressure difference between the blowing air pressure value and the preset pressure setting value is calculated, and proportional-integral-derivative adjustment is performed based on the opening value and the pressure difference to obtain a target value for the damper opening. Finally, the opening of the sootblower's damper is adjusted according to the target value to maintain the damper opening value at the target value, thereby stabilizing the blowing air pressure for sootblowing the air preheater. Compared with the prior art, this improves the sootblowing effect on the air preheater.

[0055] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application. Those skilled in the art will understand that the modules in the apparatus of the embodiment can be distributed within the apparatus of the embodiment as described, or can be modified to be located in one or more apparatuses different from this embodiment. The modules of the above-described embodiment can be combined into one module, or further divided into multiple sub-modules.

[0056] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of any particular implementation scenario. The above disclosures are merely a few specific implementation scenarios of this application; however, this application is not limited thereto, and any variations conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A method for controlling a soot blower, used to control the soot blower of an air preheater, characterized in that, The method includes: During the operation of the soot blower, the blowing air pressure value of the soot blower and the real-time opening value of the soot blower damper are monitored, and the blowing air pressure value is compared with the preset upper limit value of the air pressure. When the blowing air pressure value is lower than the upper limit of the air pressure, the air pressure difference between the blowing air pressure value and the preset air pressure setting value is calculated, and the target value of the valve opening is determined based on the opening value and the air pressure difference. Adjust the opening of the sootblower's damper according to the target damper opening value, so that the damper opening value is maintained at the target damper opening value, so that the blowing air pressure value of the sootblower approaches the set air pressure value.

2. The method according to claim 1, characterized in that, The method for monitoring the blowing air pressure value of the soot blower includes: Based on the air pressure sensor installed at the soot blowing tube inside the soot blower, the air pressure value inside the soot blowing tube is collected in real time, and the air pressure value is determined as the blowing air pressure value.

3. The method according to claim 1, characterized in that, After comparing the blowing air pressure value with a preset upper limit air pressure value, the method further includes: When the blowing air pressure value is higher than the upper limit value, the opening value of the soot blower's damper is adjusted to zero.

4. The method according to claim 1, characterized in that, The air pressure setting is 1.5 MPa.

5. The method according to claim 1, wherein the soot blower has a preset operating time limit, characterized in that, The method further includes: The running time of the sootblower is monitored to determine the cumulative running time of the sootblower since its start-up. When there is a preset time interval between the cumulative running time and the running time limit, the opening value of the sootblower's valve is adjusted to zero at a preset valve adjustment speed.

6. The method according to claim 5, characterized in that, After adjusting the opening value of the sootblower's damper to zero at a preset damper adjustment speed during a preset time interval between the cumulative running time and the running time limit, the method further includes: The corresponding drain valve of the soot blower is activated to remove condensate from the soot blowing tube of the soot blower; After the steam trap is started, it stops operating after a preset drainage time.

7. The method according to claim 3, characterized in that, The method involves monitoring the blowing air pressure and the real-time opening of the sootblower's damper during operation, and comparing the blowing air pressure with a preset upper limit value. When the blowing air pressure value is higher than the upper limit value, an overpressure alarm message is sent to the remote host computer.

8. A control device for a soot blower, characterized in that, The device includes: The parameter acquisition module is used to monitor the blowing air pressure value of the sootblower and the real-time opening value of the sootblower's damper when the sootblower is running, and compare the blowing air pressure value with the preset upper limit value of the air pressure. The opening calculation module is used to calculate the pressure difference between the blowing air pressure value and the preset air pressure setting value when the blowing air pressure value is lower than the upper limit value of the air pressure, and to determine the target value of the valve opening based on the opening value and the pressure difference value. The opening adjustment module is used to adjust the opening of the sootblower's valve according to the valve opening target value, so that the valve opening value is maintained at the valve opening target value, so that the blowing air pressure value of the sootblower approaches the air pressure setting value.

9. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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