Boiler self-checking system and waste heat boiler

Abstract

The invention relates to the technical field of safety control of thermal equipment, in particular to a boiler self-checking system and a waste heat boiler, and the boiler self-checking system comprises a state recognition module and a dynamic logic verification module. A safety logic rule matched with the initial thermal state judged by the state recognition module is called, conformity verification is carried out on the real-time state or operation logic of related execution elements of the boiler, and when verification is not passed, a control instruction is output to limit the starting process or give out an alarm; according to the method, a closed loop of state recognition, dynamic logic matching and safety verification is constructed, dependence on human experience is reduced, safety accidents caused by human errors are effectively avoided, matching of safety measures and actual working conditions of the boiler is ensured through intelligent state self-adaption, and the starting and running safety of the boiler is improved.

Description

Technical Field

[0001] This invention relates to the field of thermal equipment safety control technology, and in particular to a boiler self-inspection system and a waste heat boiler. Background Technology

[0002] In the field of thermal equipment safety control technology, waste heat boilers, as important energy recovery and conversion equipment, are widely used in various industrial production scenarios, especially in thermal systems used in conjunction with gas turbines, steam turbines, etc. Traditional waste heat boiler self-inspection methods mainly rely on manual periodic inspections and rough judgments based on simple parameters such as shutdown time to assess the boiler status, thereby guiding subsequent startup and operation. At the same time, most existing self-inspection systems adopt fixed safety logic rules, which lack dynamism and adaptability in checking the status of relevant actuators and verifying operational logic during boiler startup and operation.

[0003] However, the traditional self-inspection method for waste heat boilers, which relies on manual inspection, is not only inefficient but also easily affected by human factors, such as the experience level and work attitude of the inspectors, resulting in inaccurate and untimely judgments of the boiler's condition. Furthermore, the traditional self-inspection method for waste heat boilers, which uses simple parameters such as shutdown time to judge the boiler's condition, is too crude and cannot accurately reflect the actual thermal state of the boiler's pressure-bearing components. This is because the boiler's cold, warm, and hot states are not only related to the shutdown time but are also affected by many factors, such as ambient temperature, boiler insulation, and previous operating conditions.

[0004] In practical applications, if the initial thermal state of a waste heat boiler cannot be accurately determined when it starts from a hot state, and it is still operated according to the logic of a cold start, it may lead to serious safety accidents. For example, if the drain valve is opened too early during the hot start-up process, the high-temperature heating surface will be subjected to cold shock due to water ingress, causing damage such as pipe deformation, cracks, or even rupture, affecting the safe operation and service life of the boiler. At the same time, during boiler operation, factors such as load changes and equipment failures can cause changes in the boiler's operating state. Existing self-inspection systems cannot detect these changes in time and adjust the safety logic accordingly, thus failing to effectively cope with various complex operating conditions, increasing safety risks and operating costs.

[0005] Therefore, to address the above problems, a boiler self-inspection system and waste heat boiler are proposed. By constructing a closed loop of state recognition, dynamic logic matching, and safety verification, the reliance on human experience is reduced, effectively avoiding safety accidents caused by human error. Moreover, through intelligent state self-adaptation, the system ensures that safety measures are consistent with the actual operating conditions of the boiler, thereby improving the safety of boiler startup and operation. Summary of the Invention

[0006] To overcome the shortcomings of traditional waste heat boiler self-inspection methods, which rely on manual inspections and simple parameters to determine boiler status, resulting in low accuracy, poor timeliness, and susceptibility to human factors; and based on fixed safety logic rules, these methods cannot be dynamically adjusted according to the actual initial thermal state of the boiler, and cannot provide suitable safety guarantees under different operating conditions such as hot start-up, which can easily lead to safety accidents such as cold shock from water entering the high-temperature heating surface due to misjudgment of status or delayed operation, thus increasing safety risks and operating costs.

[0007] The technical solution of this invention is: a boiler self-inspection system, comprising: The status recognition module is used to automatically determine whether the initial thermal state of the boiler is cold, warm, or hot based on real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. The dynamic logic verification module is communicatively connected to the state recognition module, and it pre-stores a set of security logic rules corresponding to different initial thermal states. The dynamic logic verification module is configured to: at at least one critical node in the boiler startup process, invoke a safety logic rule that matches the initial thermal state determined by the state identification module, perform compliance verification on the real-time state or operation logic of the relevant boiler actuators, and output a control command to restrict the startup process or issue a warning when the verification fails.

[0008] Preferably, the status identification module automatically determines the initial thermal state of the boiler as cold, warm, or hot based on real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. The dynamic logic verification module is communicatively connected to the status identification module and has a pre-stored set of safety logic rules corresponding to different initial thermal states. At at least one critical node in the boiler startup process, the dynamic logic verification module calls the safety logic rules that match the initial thermal state determined by the status identification module to perform compliance verification on the real-time status or operation logic of the relevant boiler actuators. If the verification fails, it outputs control commands to restrict the startup process or issues a warning. The system adopts dynamic monitoring and verification throughout the startup process for the self-test process. By automatically identifying the cold, warm, and hot states of the boiler and calling the most suitable safety logic for the current situation, it achieves safety warnings for critical operations such as steam trap opening and closing and desuperheating water commissioning, reducing safety risks caused by misjudgment of status or operation delays.

[0009] Preferably, the state recognition module includes: An array of temperature sensors is arranged on the heating surface tube walls of the boiler's high-pressure drum, medium-pressure drum, low-pressure drum, and at least one stage of superheater and reheater. The state discrimination unit is used to compare the real-time temperature data collected by the temperature sensor array with the preset temperature threshold range, and output the initial thermal state identifier of the boiler based on the comparison result. The state discrimination unit is configured to: discriminate as cold state when the temperature of all key measuring points is below a first threshold; discriminate as hot state when the temperature of any main heated surface metal is above a second threshold; and discriminate as warm state when the temperature distribution is between cold and hot states. By directly measuring the temperature of key metal components, rather than relying on rough shutdown time for indirect judgment using conventional techniques, condition identification becomes more accurate and reliable, avoiding the subjectivity and uncertainty of human experience-based judgment.

[0010] Preferably, the dynamic logic verification module is configured to activate the dedicated verification logic for hot state startup when the initial thermal state identifier is hot. The dedicated verification logic for hot start includes: Real-time acquisition of gas turbine exhaust temperature and saturation temperature calculated based on pressure of pressure boiler drum; Under the current boiler condition, the first safety interlock is executed: while the logical judgment that the gas turbine exhaust temperature is less than the pressure boiler drum saturation temperature remains true, an instruction is generated to lock all the drain valves of the superheater system and reheater system of the boiler in the closed state, and their valve position feedback is monitored in real time. If any controlled drain valve is detected to be in a non-closed state, the highest priority alarm is triggered and an interlock signal is output to the gas turbine control system to prevent its ignition or interrupt its acceleration process. By comparing two key temperature parameters in real time, the system automatically executes mandatory safety interlocks to prevent accidents caused by water entering the high-temperature heated surface and causing cold shock when the drain valve is opened at the wrong time.

[0011] Preferably, the dedicated verification logic for hot start also includes a state transition self-test: The gas turbine exhaust temperature and the pressure cooker drum saturation temperature are continuously compared. When the logical judgment changes from gas turbine exhaust temperature < pressure boiler drum saturation temperature to gas turbine exhaust temperature ≥ pressure boiler drum saturation temperature, the dynamic logic verification module automatically unlocks the closure of the steam trap and generates a prompt signal to allow or automatically execute the operation of opening the steam trap. Through closed-loop management of safety logic, accidental start-up is prevented. When safety conditions are met, restrictions are intelligently lifted, and correct operations are guided or automatically executed, ensuring a smooth and automated boiler startup process and avoiding operational rigidity caused by over-protection.

[0012] As a preferred option, it also includes: A one-click pre-test module is used to receive start-up type commands input by the operator; The one-click pre-test module is configured to trigger the following processes in sequence in response to the startup type command: a. Perform a functional self-test of the basic equipment; b calls the status recognition module to obtain and confirm whether the boiler's current initial thermal state logically matches the start-up type input by the operator; c calls the dynamic logic verification module to pre-verify whether the real-time state of the key execution element meets the pre-state requirements in the corresponding security logic rule set based on the current initial hot state. Based on the above inspection results, generate a self-inspection report that includes dimensions of equipment functionality and state logic compliance; This module is used to verify whether the logical configuration of the entire system is ready.

[0013] Preferably, the dynamic logic verification module is further configured as follows: During boiler operation, the real-time operating status parameters of the boiler are continuously monitored; Based on the real-time operating status parameters, the operating safety logic rules adapted to the current status are dynamically invoked to perform online verification of the control logic and equipment status of the water supply system, desuperheating water system, and sewage system. When the verification detects a control logic conflict or an abnormal device status, a correction command or alarm is output. This enables the self-inspection system to cope with various complex operating conditions caused by load changes, equipment failures, etc., and to achieve full life cycle safety monitoring and intelligent early warning.

[0014] A waste heat boiler includes a boiler body, a gas turbine, a steam turbine, and a matching steam-water system, as well as the aforementioned boiler self-inspection system; The boiler self-inspection system is integrated with the distributed control system of the waste heat boiler. The control commands and interlocking signals output by the dynamic logic verification module are configured to exceed the conventional operation commands and have the highest execution priority.

[0015] A boiler self-inspection method based on the above-mentioned boiler self-inspection system includes the following steps: S1: The initial thermal state of the boiler is automatically determined by the status recognition module based on the real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. S2: At at least one critical node in the boiler startup process, the dynamic logic verification module calls a set of safety logic rules that match the initial thermal state. S3: The dynamic logic verification module performs compliance verification on the real-time status or operation logic of the boiler-related actuators according to the matching safety logic rules. S4: When the verification fails, output a control command to restrict the startup process or issue a warning.

[0016] Preferably, when the initial thermal state is determined to be hot, steps S2 and S3 specifically include: S21: Real-time acquisition and comparison of gas turbine exhaust temperature with saturation temperature calculated based on pressure of pressure boiler drum; S31: When the gas turbine exhaust temperature is less than the pressure cooker drum saturation temperature, verify that all superheater and reheater drain valves are closed. If the verification passes, the lock remains closed. If the verification fails, the highest priority alarm will be triggered and interlocking protection will be activated.

[0017] Preferably, a preparatory self-test step is included before step S1, specifically: S0: Receive operator start type command; S01: Perform a functional self-test of the basic equipment; S02: Call the status recognition module to determine the current initial hot state and verify whether it is logically consistent with the start type of the operator's instruction; S03: Based on the current initial thermal state, pre-verify whether the state of critical execution elements conforms to safety logic; S04: Generate an intelligent self-test report. Only after the device's functionality and status logic have both passed verification can the subsequent startup process be allowed.

[0018] The beneficial effects of this invention are: The system of this invention first senses and determines the initial thermal state of the boiler through a temperature sensor array deployed on key components. Subsequently, at each critical node of startup and operation, the system dynamically invokes a set of safety logic rules that match the state to perform real-time and continuous compliance checks on the state of relevant actuators. Once a conflict between the state and the logic rules is detected, the highest priority control command is output to block dangerous operations. This reduces reliance on human experience, effectively avoids safety accidents caused by human error, and ensures that safety measures are consistent with the actual operating conditions of the boiler through intelligent state adaptation, improving the automation level, safety reliability, and operating efficiency of the waste heat boiler unit startup. By constructing a closed loop of state identification, dynamic logic matching, and safety verification, the safety of boiler startup and operation is improved. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic representation of the overall architecture of the boiler self-inspection system of the present invention. Figure 2 The diagram shown is a schematic representation of the overall boiler self-inspection process of the boiler self-inspection system of the present invention. Figure 3 The diagram shown is a schematic of the hot start-up safety interlock process of the boiler self-inspection system of the present invention. Figure 4The diagram shown is a schematic of the one-click pre-test process of the boiler self-test system of the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention provides an embodiment: a boiler self-inspection system, comprising: The status recognition module is used to automatically determine whether the initial thermal state of the boiler is cold, warm, or hot based on real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. The dynamic logic verification module communicates with the state recognition module and has a pre-stored set of safety logic rules corresponding to different initial thermal states. The dynamic logic verification module is configured to: at at least one critical node in the boiler startup process, invoke a safety logic rule that matches the initial thermal state determined by the status identification module, perform compliance verification on the real-time status or operation logic of the relevant boiler actuators, and output control commands to restrict the startup process or issue a warning when the verification fails.

[0022] The status identification module automatically determines the initial thermal state of the boiler as cold, warm, or hot based on real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. The dynamic logic verification module communicates with the status identification module and has a pre-stored set of safety logic rules corresponding to different initial thermal states. At at least one critical node in the boiler startup process, the dynamic logic verification module calls the safety logic rules that match the initial thermal state determined by the status identification module to perform compliance verification on the real-time status or operation logic of the relevant boiler actuators. If the verification fails, it outputs control commands to limit the startup process or issue warnings. The system adopts dynamic monitoring and verification throughout the startup process for the self-test process. By automatically identifying the cold, warm, and hot states of the boiler and calling the most suitable safety logic for the current situation, it can provide safety warnings for critical operations such as steam trap opening and closing and desuperheating water commissioning, reducing safety risks caused by misjudgment of status or operation delays.

[0023] Furthermore, the status recognition module includes: An array of temperature sensors is arranged on the heating surface tube walls of the boiler's high-pressure drum, medium-pressure drum, low-pressure drum, and at least one stage of superheater and reheater. The status discrimination unit is used to compare the real-time temperature data collected by the temperature sensor array with the preset temperature threshold range, and output the initial thermal status identifier of the boiler based on the comparison result. The state discrimination unit is configured to: discriminate as cold state when the temperature of all key measuring points is below the first threshold; discriminate as hot state when the metal temperature of any main heated surface is above the second threshold; and discriminate as warm state when the temperature distribution is between cold and hot states. By directly measuring the temperature of key metal components, rather than relying on rough shutdown time for indirect judgment using conventional techniques, condition identification becomes more accurate and reliable, avoiding the subjectivity and uncertainty of human experience-based judgment.

[0024] Furthermore, the dynamic logic verification module is configured to activate the dedicated verification logic for hot state startup when the initial thermal state is identified as hot. The dedicated verification logic for hot start includes: Real-time acquisition of gas turbine exhaust temperature and saturation temperature calculated based on pressure of pressure boiler drum; Under the current boiler condition, the first safety interlock is executed: while the logical judgment that the gas turbine exhaust temperature is less than the pressure boiler drum saturation temperature remains true, an instruction is generated to lock all drain valves of the boiler's superheater system and reheater system in the closed state, and their valve position feedback is monitored in real time. If any controlled drain valve is detected to be in a non-closed state, the highest priority alarm is triggered and an interlock signal is output to the gas turbine control system to prevent its ignition or interrupt its acceleration process. By comparing two key temperature parameters in real time, the system automatically executes mandatory safety interlocks to prevent accidents caused by water entering the high-temperature heated surface and causing cold shock when the drain valve is opened at the wrong time.

[0025] Furthermore, the dedicated verification logic for hot startup also includes a state transition self-test: Continuously compare the exhaust temperature of the gas turbine with the saturation temperature of the pressure cooker drum; When the logical judgment changes from gas turbine exhaust temperature < pressure boiler drum saturation temperature to gas turbine exhaust temperature ≥ pressure boiler drum saturation temperature, the dynamic logic verification module automatically unlocks the closure of the steam trap and generates a prompt signal, allowing or automatically executing the operation of opening the steam trap. Through closed-loop management of safety logic, accidental start-up is prevented. When safety conditions are met, restrictions are intelligently lifted, and correct operations are guided or automatically executed, ensuring a smooth and automated boiler startup process and avoiding operational rigidity caused by over-protection.

[0026] Furthermore, it also includes: A one-click pre-test module is used to receive start-up type commands input by the operator; The one-click pre-test module is configured to trigger the following processes in sequence in response to a startup type command: a. Perform a functional self-test of the basic equipment; b. Call the status recognition module to obtain and confirm whether the boiler's current initial thermal state logically matches the start-up type entered by the operator; c calls the dynamic logic verification module to pre-verify whether the real-time state of the key execution element meets the pre-state requirements in the corresponding security logic rule set based on the current initial hot state. Based on the above inspection results, generate a self-inspection report that includes dimensions of equipment functionality and state logic compliance; This module is used to verify whether the logical configuration of the entire system is ready.

[0027] Furthermore, the dynamic logic verification module is also configured as follows: During boiler operation, the real-time operating status parameters of the boiler are continuously monitored; Based on real-time operating status parameters, the system dynamically invokes operating safety logic rules adapted to the current status to perform online verification of the control logic and equipment status of the water supply system, desuperheating water system, and sewage system. When the verification detects a control logic conflict or an abnormal device status, a correction command or alarm is output. This enables the self-inspection system to cope with various complex operating conditions caused by load changes, equipment failures, etc., and to achieve full life cycle safety monitoring and intelligent early warning.

[0028] A waste heat boiler includes a boiler body, a gas turbine, a steam turbine, and a matching steam-water system, as well as the aforementioned boiler self-inspection system; The boiler self-inspection system is integrated with the distributed control system of the waste heat boiler. The control commands and interlock signals output by the dynamic logic verification module are configured to exceed the conventional operation commands and have the highest execution priority.

[0029] A boiler self-inspection method based on the above-mentioned boiler self-inspection system includes the following steps: S1: The initial thermal state of the boiler is automatically determined by the status recognition module based on the real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. S2: At at least one critical node in the boiler startup process, the dynamic logic verification module calls a set of safety logic rules that match the initial thermal state. S3: The dynamic logic verification module performs compliance verification on the real-time status or operation logic of the boiler-related actuators according to the matching safety logic rules. S4: When the verification fails, output a control command to restrict the startup process or issue a warning.

[0030] Furthermore, when the initial thermal state is determined to be a hot state, steps S2 and S3 specifically include: S21: Real-time acquisition and comparison of gas turbine exhaust temperature with saturation temperature calculated based on pressure of pressure boiler drum; S31: When the gas turbine exhaust temperature is less than the pressure cooker drum saturation temperature, verify that all superheater and reheater drain valves are closed. If the verification passes, the lock remains closed. If the verification fails, the highest priority alarm will be triggered and interlocking protection will be activated.

[0031] Furthermore, prior to step S1, a preparatory self-test step is included, specifically: S0: Receive operator start type command; S01: Perform a functional self-test of the basic equipment; S02: Call the status recognition module to determine the current initial hot state and verify whether it is logically consistent with the start type of the operator's instruction; S03: Based on the current initial thermal state, pre-verify whether the state of critical execution elements conforms to safety logic; S04: Generate an intelligent self-test report. Only after the device's functionality and status logic have both passed verification can the subsequent startup process be allowed.

[0032] Through the above steps, the initial thermal state of the boiler is sensed and determined by temperature sensor arrays deployed on key components. Subsequently, at each critical node of startup and operation, the system dynamically invokes a set of safety logic rules that match the state to perform real-time and continuous compliance checks on the state of relevant actuators. Once a conflict between the state and the logic rules is detected, the highest priority control command is output to block dangerous operations. This reduces reliance on human experience, effectively avoids safety accidents caused by human error, and ensures that safety measures are consistent with the actual operating conditions of the boiler through intelligent state adaptation, improving the automation level, safety reliability, and operating efficiency of the waste heat boiler unit startup. By constructing a closed loop of state recognition, dynamic logic matching, and safety verification, the safety of boiler startup and operation is improved.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A boiler self-inspection system, characterized in that: include: The status recognition module is used to automatically determine whether the initial thermal state of the boiler is cold, warm, or hot based on real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. The dynamic logic verification module is communicatively connected to the state recognition module, and it pre-stores a set of security logic rules corresponding to different initial thermal states. The dynamic logic verification module is configured to: at at least one critical node in the boiler startup process, invoke a safety logic rule that matches the initial thermal state determined by the state identification module, perform compliance verification on the real-time state or operation logic of the relevant boiler actuators, and output a control command to restrict the startup process or issue a warning when the verification fails.

2. The boiler self-inspection system according to claim 1, characterized in that: The status recognition module includes: An array of temperature sensors is arranged on the heating surface tube walls of the boiler's high-pressure drum, medium-pressure drum, low-pressure drum, and at least one stage of superheater and reheater. The state discrimination unit is used to compare the real-time temperature data collected by the temperature sensor array with the preset temperature threshold range, and output the initial thermal state identifier of the boiler based on the comparison result. The state discrimination unit is configured to: discriminate as cold state when the temperature of all key measuring points is below the first threshold; discriminate as hot state when the temperature of any main heated surface metal is above the second threshold; and discriminate as warm state when the temperature distribution is between cold and hot states.

3. The boiler self-inspection system according to claim 2, characterized in that: The dynamic logic verification module is configured to activate the dedicated verification logic for hot state startup when the initial hot state identifier is hot. The dedicated verification logic for hot start includes: Real-time acquisition of gas turbine exhaust temperature and saturation temperature calculated based on pressure of pressure boiler drum; Under the current boiler condition, the first safety interlock is executed: while the logical judgment that the gas turbine exhaust temperature is less than the pressure boiler drum saturation temperature remains true, an instruction is generated to lock all the drain valves of the superheater system and reheater system of the boiler in the closed state, and their valve position feedback is monitored in real time. If any controlled drain valve is detected to be in a non-closed state, the highest priority alarm is triggered and an interlock signal is output to the gas turbine control system to prevent its ignition or interrupt its acceleration process.

4. A boiler self-inspection system according to claim 3, characterized in that: The dedicated verification logic for hot start also includes a state transition self-test: The gas turbine exhaust temperature and the pressure cooker drum saturation temperature are continuously compared. When the logical judgment changes from "gas turbine exhaust temperature < pressure boiler drum saturation temperature" to "gas turbine exhaust temperature ≥ pressure boiler drum saturation temperature", the dynamic logic verification module automatically unlocks the closure of the steam trap and generates a prompt signal, allowing or automatically executing the operation of opening the steam trap.

5. A boiler self-inspection system according to claim 1, characterized in that: Also includes: A one-click pre-test module is used to receive start-up type commands input by the operator; The one-click pre-test module is configured to trigger the following processes in sequence in response to the startup type command: a. Perform a functional self-test of the basic equipment; b calls the status recognition module to obtain and confirm whether the boiler's current initial thermal state logically matches the start-up type input by the operator; c calls the dynamic logic verification module to pre-verify whether the real-time state of the key execution element meets the pre-state requirements in the corresponding security logic rule set based on the current initial hot state. Based on the above inspection results, generate a self-inspection report that includes dimensions of device functionality and state logic compliance.

6. A boiler self-inspection system according to claim 1, characterized in that: The dynamic logic verification module is also configured to: During boiler operation, the real-time operating status parameters of the boiler are continuously monitored; Based on the real-time operating status parameters, the operating safety logic rules adapted to the current status are dynamically invoked to perform online verification of the control logic and equipment status of the water supply system, desuperheating water system, and sewage system. When the verification detects a control logic conflict or an abnormal device status, a correction command or alarm is output.

7. A waste heat boiler, comprising a boiler body, a gas turbine, a steam turbine, and a matching steam-water system, characterized in that, It also includes the boiler self-inspection system as described in any one of claims 1-6; The boiler self-inspection system is integrated with the distributed control system of the waste heat boiler. The control commands and interlocking signals output by the dynamic logic verification module are configured to exceed the conventional operation commands and have the highest execution priority.

8. A boiler self-inspection method based on the boiler self-inspection system of claim 1, characterized in that, Includes the following steps: S1: The initial thermal state of the boiler is automatically determined by the status recognition module based on the real-time measurement data of the metal wall temperature of the boiler's pressure-bearing components. S2: At at least one critical node in the boiler startup process, the dynamic logic verification module calls a set of safety logic rules that match the initial thermal state. S3: The dynamic logic verification module performs compliance verification on the real-time status or operation logic of the boiler-related actuators according to the matching safety logic rules. S4: When the verification fails, output a control command to restrict the startup process or issue a warning.

9. The boiler self-inspection method according to claim 8, characterized in that: When the initial thermal state is determined to be hot, steps S2 and S3 specifically include: S21: Real-time acquisition and comparison of gas turbine exhaust temperature with saturation temperature calculated based on pressure of pressure boiler drum; S31: When the gas turbine exhaust temperature is less than the pressure boiler drum saturation temperature, verify that all superheater and reheater drain valves are closed. If the verification passes, the lock remains closed. If the verification fails, the highest priority alarm will be triggered and interlocking protection will be activated.

10. The boiler self-inspection method according to claim 8, characterized in that: Before step S1, a preparatory self-test step is also included, specifically: S0: Receive operator start type command; S01: Perform a functional self-test of the basic equipment; S02: Call the status recognition module to determine the current initial hot state and verify whether it is logically consistent with the start type of the operator's instruction; S03: Based on the current initial thermal state, pre-verify whether the state of critical execution elements conforms to safety logic; S04: Generate an intelligent self-test report. Only after the device's functionality and status logic have both passed verification can the subsequent startup process be allowed.

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