An online pH meter abnormality diagnosis method and system for a water vapor system

Abstract

The application discloses a kind of water vapor system online pH table abnormal diagnosis method and system, belong to analytical detection technical field, including obtaining the real-time pH value of online pH table;Determine whether the real-time pH value exceeds pH setting range;When the real-time pH value exceeds the pH range, the measuring point position of online pH table is acquired;Determine the fault type of online pH table based on measuring point position, determine fault cause according to fault type: when measuring point position is multiple, then determine that the fault of online pH table is water vapor system dosing fault;When measuring point position is one, then determine that the fault of online pH table is water vapor system non-dosing fault.Make that operating personnel timely and accurately understand online pH table exception, improve repair efficiency, ensure unit safe operation.

Description

Technical Field

[0001] This invention belongs to the field of analytical testing technology, specifically relating to a method and system for diagnosing abnormalities in an online pH meter of a water vapor system. Background Technology

[0002] The boiler's steam and water system is crucial to the quality of boiler water treatment, directly impacting the boiler's safe, economical operation and lifespan. During boiler operation, the temperature and pressure of the water inside are relatively high, the furnace tube wall temperature is excellent, and the stress on various parts of the equipment is significant. Furthermore, impurities in the feedwater concentrate and precipitate within the boiler, often accumulating deposits. These factors all promote corrosion and complicate the corrosion problem. Therefore, although the water entering the boiler is deoxygenated, the pH value of the boiler water is often quite high.

[0003] Large-capacity units have extremely high requirements for water and steam quality. Accurate monitoring of water and steam quality is a necessary means to ensure the safe and economical operation of the unit. DL / T805.4-2016 stipulates that when boiler feedwater adopts oxidative full volatile treatment, the feedwater pH value should be controlled between 9.2 and 9.6. The amount of ammonia added is controlled by a pH meter, thereby controlling the pH value of the water and steam system. An abnormal online pH meter will cause the staff to be unable to judge the water and steam pH value in time, resulting in the addition of too much or too little ammonia to the water and steam system, which will lead to a reduction in the water production of the fine treatment mixed bed cycle or corrosion of the water and steam system.

[0004] Failure to promptly detect problems with online pH meters during use will inevitably result in inaccurate reflection of water and steam quality in the water-steam system. This will also lead to slow maintenance by repair personnel and affect the safe operation of the unit. Summary of the Invention

[0005] In order to promptly detect problems with online pH meters during use and accurately reflect the water and steam quality of the water and steam system, this invention provides a method, system, equipment, and storage medium for diagnosing abnormalities in online pH meters of water and steam systems. This enables operators to understand online pH meter abnormalities in a timely and accurate manner, improves maintenance efficiency, and ensures the safe operation of the unit.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A method for diagnosing abnormal pH levels in an online pH meter of a water vapor system includes:

[0008] Obtain the real-time pH value from the online pH meter;

[0009] Determine if the real-time pH value exceeds the set pH range;

[0010] When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter;

[0011] The fault type of the online pH meter is determined based on the location of the measuring point, and the cause of the fault is determined according to the fault type: when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0012] As a further improvement of the present invention, when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water vapor system, and then:

[0013] Obtain the flow rate of the ammonia metering pump for condensate in the power plant;

[0014] Determine whether the flow rate of the condensate ammonia metering pump matches the preset ammonia flow rate;

[0015] If the flow rate of the condensate ammonia metering pump does not match the preset ammonia flow rate, the problem in the water and steam system dosing system is determined to be a blockage in the ammonia dosing pipeline.

[0016] As a further improvement of the present invention, when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water vapor system, and then:

[0017] Obtain the liquid level of the ammonia solution;

[0018] Determine if the liquid level is below the preset minimum liquid level;

[0019] If the liquid level in the ammonia solution tank is lower than the preset minimum level, the problem is determined to be that the operator failed to add ammonia water of a certain concentration to the solution tank in a timely manner.

[0020] As a further improvement of the present invention, the step of determining whether the liquid level is lower than a preset minimum liquid level further includes:

[0021] Obtain the signal from the ammonia alarm in the ammonia addition room;

[0022] Determine if the ammonia alarm in the ammonia addition room has an alarm signal;

[0023] If the ammonia alarm in the ammonia addition room does not send an alarm signal, and the liquid level in the ammonia solution tank is lower than the preset minimum liquid level, then the problem with the water vapor system dosing is determined to be that the operator did not add ammonia water of a certain concentration to the solution tank in a timely manner.

[0024] If the ammonia alarm in the ammonia addition room sounds and the ammonia solution tank level is lower than the preset minimum level, then based on the ammonia solution level and the ammonia alarm signal, the fault in the water-vapor system dosing is determined to be ammonia solution leakage and failure of operators to add ammonia water of a certain concentration to the solution tank in a timely manner.

[0025] As a further improvement of the present invention, when the measuring point is at one location, the fault of the online pH meter is determined to be a non-chemical fault in the water vapor system, and then:

[0026] Obtain the online pH meter calibration time;

[0027] Determine whether the calibration time of the online pH meter matches the calibration cycle set for the pH meter;

[0028] If the calibration time of the online pH meter is longer than the calibration cycle set by the pH meter, the non-dosing fault in the water vapor system is determined to be a pH meter calibration fault.

[0029] If the calibration time of the online pH meter is less than the calibration cycle set by the pH meter, the non-dosing fault in the water vapor system is determined to be a damage to the glass electrode of the online pH meter.

[0030] As a further improvement of the present invention, if the calibration time of the online pH meter is less than the calibration cycle set by the pH meter, and the non-dosing fault in the water vapor system is determined to be a damage fault of the glass electrode of the online pH meter, then:

[0031] If the temperature of the online pH meter is higher than the operating temperature of the pH meter, then the fault of the glass electrode of the online pH meter is determined to be a malfunction of the local sampling instrument cooling system.

[0032] As a further improvement of the present invention, if the calibration time of the online pH meter is less than the calibration cycle set by the pH meter, and the non-dosing fault in the water vapor system is determined to be a damage fault of the glass electrode of the online pH meter, then:

[0033] If the level of the protective solution for the online pH meter electrode is lower than the normal level, the fault of the online pH meter glass electrode is determined to be due to the failure to replenish the protective solution for the pH meter electrode in a timely manner.

[0034] An online pH meter anomaly diagnosis system for a water vapor system includes:

[0035] The pH value acquisition module is used to acquire the real-time pH value of the online pH meter;

[0036] The pH value determination module is used to determine whether the real-time pH value exceeds the pH setting range.

[0037] The measurement point location acquisition module is used to acquire the measurement point location of the online pH meter when the real-time pH value exceeds the pH range;

[0038] The fault type determination module is used to determine the fault type of the online pH meter based on the measurement point location, and then determine the cause of the fault based on the fault type: when there are multiple measurement points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measurement point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0039] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the online pH meter anomaly diagnosis method for a water vapor system.

[0040] A computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the online pH meter anomaly diagnosis method for a water vapor system. Compared with the prior art, the present invention has the following advantages:

[0041] This invention first acquires the real-time pH value of an online pH meter. By determining whether the real-time pH value exceeds a set range, it can accurately preliminarily determine whether the pH meter is malfunctioning. When the online pH is malfunctioning, the fault type of the online pH meter is determined based on the location of the abnormal measurement point. If there are multiple measurement points, the fault is determined to be a chemical dosing fault in the water-steam system; if there is only one measurement point, the fault is determined to be a non-chemical dosing fault in the water-steam system. Through rapid analysis of the measurement point location, the abnormal point is accurately located, and the cause of the online pH meter malfunction is discovered in a timely manner, improving the reliability of the online pH meter. Simultaneously, by accurately locating the cause of the online pH fault, it provides convenience for maintenance personnel, enabling them to quickly understand the main cause of the fault and shorten maintenance time. While accurately reflecting the water-steam quality, it also ensures the safe operation of the unit. Attached Figure Description

[0042] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0043] Figure 1 This is a schematic diagram of the online pH meter anomaly diagnosis method for a water vapor system according to the present invention;

[0044] Figure 2 This is a schematic diagram of the specific fault diagnosis method for the first type of water vapor system chemical dosing failure in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the specific fault diagnosis method for the second type of water vapor system chemical dosing failure in this embodiment of the invention;

[0046] Figure 4 This is a schematic diagram of the specific fault diagnosis method for the third type of water vapor system chemical dosing failure in the embodiments of the present invention;

[0047] Figure 5This is a schematic diagram of a specific fault diagnosis method for non-chemical dosing faults in a water-vapor system according to an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the structure of an online pH meter anomaly diagnosis system for a water vapor system according to the present invention;

[0049] Figure 7 This is a schematic diagram of the electronic device structure of the present invention. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0051] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0052] To address the problems in existing technologies where online pH meters cannot be detected in a timely manner during use, resulting in inaccurate reflection of water and steam quality in the water-steam system, and preventing maintenance personnel from quickly identifying the fault location and performing repairs, ultimately affecting the safe operation of the unit, this invention provides a method for diagnosing abnormalities in online pH meters for water-steam systems.

[0053] like Figure 1 As shown, the method includes:

[0054] Obtain the real-time pH value from the online pH meter;

[0055] Determine if the real-time pH value exceeds the set pH range;

[0056] When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter;

[0057] The fault type of the online pH meter is determined based on the location of the measuring point, and the cause of the fault is determined according to the fault type: when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0058] This invention can promptly detect the causes of abnormalities in online pH meters, improving their reliability. Simultaneously, by accurately locating the cause of online pH faults, it provides convenience for maintenance personnel, enabling them to quickly understand the main cause of the fault and significantly reducing maintenance time. It accurately reflects water and steam quality while ensuring the safe operation of the unit.

[0059] The present invention will now be described in detail with reference to the accompanying drawings:

[0060] A method for diagnosing abnormal pH levels in an online pH meter of a water vapor system includes:

[0061] The system acquires the real-time pH value from the online pH meter and simultaneously obtains the operating conditions of the water vapor system.

[0062] To determine whether the real-time pH value exceeds the pH range, the pH value range is 9.2 to 9.6 when the water vapor system is operating under AVT(O) condition, and 9.0 to 9.2 when the water vapor system is operating under OT condition.

[0063] When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter;

[0064] Based on the location of the measuring point, determine the fault type of the online pH meter, and then determine the cause of the fault based on the fault type:

[0065] When there are multiple measuring points, the fault in the online pH meter is determined to be a problem with the water vapor system's chemical dosing.

[0066] When there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical fault in the water vapor system.

[0067] By employing the above technical solution, comparing the real-time pH value with the pH range can preliminarily determine whether the online pH meter is malfunctioning. When the online pH meter is malfunctioning, the fault type can be determined based on the measuring point location, further identifying the cause of the fault in the online pH meter of the water-vapor system. This allows for timely detection of problems with the online pH meter during use, ensuring accurate reflection of water-vapor quality, and ultimately guaranteeing the safe operation of the unit.

[0068] like Figure 2 As shown, when the fault of the online pH meter is determined to be a problem with the water vapor system's chemical dosing:

[0069] Obtain the flow rate of the ammonia metering pump for condensate in the power plant;

[0070] Determine whether the flow rate of the condensate ammonia metering pump matches the preset ammonia flow rate;

[0071] If the flow rate of the condensate ammonia metering pump does not match the preset ammonia flow rate, the problem in the water and steam system dosing is determined to be a blockage in the ammonia dosing pipeline.

[0072] By adopting the above technical solution, it is possible to determine whether the flow rate of the condensate ammonia metering pump matches the preset ammonia flow rate, and whether the reason why the online pH meter exceeds the pH range is due to blockage of the ammonia pipeline.

[0073] like Figure 3As shown, to determine whether there are other reasons why the online pH meter malfunction is a problem with the water vapor system's chemical dosing, the following can also be considered:

[0074] Obtain the liquid level in the ammonia solution tank;

[0075] Determine if the liquid level is below the preset minimum liquid level;

[0076] If the ammonia solution tank level is lower than the preset minimum level, the problem is determined to be that the operator failed to add ammonia water of a certain concentration to the solution tank in a timely manner.

[0077] By adopting the above technical solutions, it is possible to determine whether the liquid level in the ammonia solution tank is lower than the preset minimum liquid level, and to determine whether the reason why the online pH meter exceeds the pH range is that the operator has not added ammonia water of a certain concentration to the solution tank in time.

[0078] like Figure 4 As shown, to further understand why the water vapor system dosing malfunction was caused by operators failing to add ammonia water of a certain concentration to the solution tank in a timely manner, it is also possible to check whether the liquid level is lower than the preset minimum liquid level:

[0079] Obtain the alarm signal from the ammonia alarm in the ammonia addition room;

[0080] Determine if the ammonia alarm in the ammonia addition room has an alarm signal;

[0081] If the ammonia alarm in the ammonia addition room has an alarm signal, based on the liquid level in the ammonia solution tank and the ammonia alarm signal in the ammonia addition room, the fault in the water-vapor system dosing is determined to be a leak in the ammonia solution tank and the failure of the operators to add ammonia water of a certain concentration to the solution tank in a timely manner.

[0082] If the ammonia alarm in the ammonia addition room does not send an alarm signal, it is determined that the problem with the water-steam system dosing is that the operators did not add ammonia water of a certain concentration to the solution tank in a timely manner.

[0083] like Figure 5 As shown, when the fault of the online pH meter is determined to be a non-chemical dosing fault in the water vapor system:

[0084] Obtain the online pH meter calibration time;

[0085] Determine whether the calibration time of the online pH meter matches the calibration cycle set for the pH meter;

[0086] If the calibration time of the online pH meter is longer than the calibration cycle set by the pH meter, the non-dosing fault in the water vapor system is determined to be a pH meter calibration fault.

[0087] If the calibration time of the online pH meter is less than the calibration cycle set by the pH meter, the non-dosing fault in the water vapor system is determined to be a damage to the glass electrode of the online pH meter.

[0088] By adopting the above technical solution, it is possible to determine whether the calibration time of the online pH meter matches the calibration cycle set by the pH meter, thus identifying whether the non-dosing fault in the water-vapor system is due to damage to the glass electrode of the online pH meter or a pH meter calibration fault, and further determining the non-dosing fault in the water-vapor system.

[0089] To further understand the cause of the non-chemical dosing fault in the water vapor system, which is a damaged glass electrode of the online pH meter, the following conclusions were drawn:

[0090] If the temperature of the online pH meter is higher than the operating temperature of the pH meter, it is determined that the damage to the glass electrode of the online pH meter is due to a malfunction in the cooling system of the on-site sampling rack instrument.

[0091] If the level of the protective solution for the online pH meter electrode is lower than the normal level, it is determined that the damage to the glass electrode of the online pH meter is due to the failure to replenish the protective solution in a timely manner.

[0092] By adopting the above technical solution, the matching relationship between the calibration time of the online pH meter and the calibration cycle set by the pH meter can be determined. This can further determine whether the electrode protection fluid of the pH meter was not replenished in time or whether the cooling system of the ground sampling frame instrument was not operating properly, thus facilitating the further determination of the cause of the online pH meter failure.

[0093] In summary, the inability to promptly detect problems with online pH meters during operation leads to an inaccurate reflection of water and steam quality in the system, impacting the safe operation of the unit. This invention accurately pinpoints the cause of online pH malfunctions, enabling maintenance personnel to quickly identify the primary cause and shorten maintenance time. It achieves accurate reflection of water and steam quality while ensuring the safe operation of the unit.

[0094] like Figure 6 As shown, the second objective of this invention is to provide an online pH meter anomaly diagnosis system for a water vapor system, comprising:

[0095] The pH value acquisition module is used to acquire the real-time pH value of the online pH meter;

[0096] The pH value determination module is used to determine whether the real-time pH value exceeds the pH setting range.

[0097] The measurement point location acquisition module is used to acquire the measurement point location of the online pH meter when the real-time pH value exceeds the pH range;

[0098] The fault type determination module is used to determine the fault type of the online pH meter based on the measurement point location, and then determine the cause of the fault based on the fault type: when there are multiple measurement points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measurement point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0099] By employing the above system, the pH value acquisition module obtains the real-time pH value from the online pH meter and sends it to the connected pH value judgment module. The pH value judgment module determines whether the real-time pH value of the online pH meter exceeds the pH range and sends the judgment result to the connected measuring point location acquisition module. When the real-time pH value of the pH meter exceeds the pH range, the measuring point location acquisition module obtains the measuring point location of the online pH meter and sends it to the connected fault type determination module. If multiple measuring point locations are determined, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; if only one measuring point location is determined, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system. This allows for timely detection of problems with the online pH meter during use, timely and accurate determination of water-steam quality, and thus ensures the safe operation of the unit.

[0100] like Figure 7 As shown, a third objective of the present invention is to provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the online pH meter anomaly diagnosis method for a water vapor system.

[0101] The method for diagnosing abnormal pH levels in an online pH meter of a water vapor system includes the following steps:

[0102] Obtain the real-time pH value from the online pH meter;

[0103] Determine if the real-time pH value exceeds the set pH range;

[0104] When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter;

[0105] The fault type of the online pH meter is determined based on the location of the measuring point, and the cause of the fault is determined according to the fault type: when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0106] A fourth objective of this invention is to provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the online pH meter anomaly diagnosis method for a water vapor system.

[0107] The method for diagnosing abnormal pH levels in an online pH meter of a water vapor system includes the following steps:

[0108] Obtain the real-time pH value from the online pH meter;

[0109] Determine if the real-time pH value exceeds the set pH range;

[0110] When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter;

[0111] The fault type of the online pH meter is determined based on the location of the measuring point, and the cause of the fault is determined according to the fault type: when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

[0112] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0113] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0114] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0115] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for diagnosing abnormality of an on-line pH meter of a water vapor system, characterized by, include: Obtain the real-time pH value from the online pH meter; determine whether the real-time pH value exceeds the set pH range; When the real-time pH value exceeds the pH range, obtain the measurement point location of the online pH meter; The fault type of the online pH meter is determined based on the location of the measuring point, and the cause of the fault is determined according to the fault type: when there are multiple measuring points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measuring point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system. When there are multiple measuring points, after determining that the fault in the online pH meter is a problem with the water vapor system's chemical dosing, perform the following operations: Obtain the flow rate of the ammonia metering pump for condensate in the power plant; determine whether the flow rate of the ammonia metering pump for condensate matches the preset ammonia metering flow rate; if the flow rate of the ammonia metering pump for condensate does not match the preset ammonia metering flow rate, then determine that the dosing fault in the water and steam system is a blockage in the ammonia metering pipeline; Obtain the liquid level of the ammonia solution tank; determine if the liquid level is lower than the preset minimum liquid level; if the liquid level of the ammonia solution tank is lower than the preset minimum liquid level, determine that the water vapor system dosing failure is due to the operator not adding ammonia water of a certain concentration to the solution tank in a timely manner; When there is only one measuring point, after determining that the fault of the online pH meter is a non-chemical fault in the water vapor system, the calibration time of the online pH meter is obtained. Determine whether the calibration time of the online pH meter matches the calibration cycle set for the pH meter; If the calibration time of the online pH meter is longer than the calibration cycle set by the pH meter, the non-dosing fault in the water vapor system is determined to be a pH meter calibration fault. If the calibration time of the online pH meter is less than the set calibration cycle of the pH meter, the non-dosing fault in the water vapor system is determined to be a damage to the glass electrode of the online pH meter. Further investigation is then needed: If the temperature of the online pH meter is higher than the operating temperature of the pH meter, the fault is determined to be a malfunction of the local sampling instrument's cooling system. If the level of the electrode protection fluid in the online pH meter is lower than the normal level, the fault is determined to be a failure to replenish the electrode protection fluid in a timely manner.

2. The method of claim 1, wherein the water-steam system on-line pH table abnormality diagnosis method is characterized by, After determining whether the liquid level in the ammonia solution tank is lower than the preset minimum liquid level, the process also includes: Obtain the signal from the ammonia alarm in the ammonia addition room; Determine if the ammonia alarm in the ammonia addition room has an alarm signal; If the ammonia alarm in the ammonia addition room does not send an alarm signal, and the liquid level in the ammonia solution tank is lower than the preset minimum liquid level, then the problem with the water vapor system dosing is determined to be that the operator did not add ammonia water of a certain concentration to the solution tank in a timely manner. If the ammonia alarm in the ammonia addition room has an alarm signal, and the liquid level in the ammonia solution tank is lower than the preset minimum liquid level, then based on the liquid level in the ammonia solution tank and the ammonia alarm signal, the fault in the water-vapor system dosing is determined to be ammonia solution leakage and failure of the operators to add ammonia water of a certain concentration to the solution tank in a timely manner.

3. A water-steam system on-line pH meter abnormality diagnosis system for executing the water-steam system on-line pH meter abnormality diagnosis method according to any one of claims 1 to 2, characterized by include: The pH value acquisition module is used to acquire the real-time pH value of the online pH meter; The pH value determination module is used to determine whether the real-time pH value exceeds the pH setting range. The measurement point location acquisition module is used to acquire the measurement point location of the online pH meter when the real-time pH value exceeds the pH range; The fault type determination module is used to determine the fault type of the online pH meter based on the measurement point location, and then determine the cause of the fault based on the fault type: when there are multiple measurement points, the fault of the online pH meter is determined to be a chemical dosing fault in the water-steam system; when there is only one measurement point, the fault of the online pH meter is determined to be a non-chemical dosing fault in the water-steam system.

4. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the online pH meter anomaly diagnosis method for a water vapor system according to any one of claims 1-2.

5. A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the online pH meter anomaly diagnosis method for a water vapor system according to any one of claims 1-2.

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