Valve diagnosis method, device and equipment and storage medium

Abstract

The invention relates to the technical field of valve diagnosis, and provides a valve diagnosis method and device, equipment and a storage medium. The method comprises the following steps: constructing a valve diagnosis strategy library; the valve diagnosis strategy library comprises a plurality of diagnosis strategies corresponding to different types of valves; in the operation process of the target valve, the stress value borne by a valve rod of the target valve in the operation process is obtained in real time through a preset stress sensor, and stress information of the valve rod is obtained; and obtaining a target diagnosis strategy corresponding to the target valve from the valve diagnosis strategy library, and analyzing the stress information based on the target diagnosis strategy to obtain a diagnosis result of the target valve. The method is beneficial to comprehensive diagnosis of the fault of the valve.

Description

Technical Field

[0001] The present application relates to the field of valve diagnosis technology, and in particular to a valve diagnosis method, device, equipment and storage medium. Background Art

[0002] Valves are one of the key control devices in industrial production and are widely used in the fields of petroleum, chemical industry, electric power, metallurgy, etc. The normal operation of valves is crucial to the safety and efficiency of the process. However, during long-term use, valves may suffer performance degradation or failure due to wear, corrosion, aging, external environmental influences, etc. If valve failures are not detected and handled in time, it may cause production accidents, equipment damage, and even cause serious safety hazards. Therefore, it is of great significance to diagnose valve faults and promptly discover and eliminate potential problems to ensure the stable operation of industrial systems.

[0003] Existing valve fault diagnosis technology is usually based on a simple judgment of a single stress. Single stress detection is difficult to fully reflect the fault information of the valve. With the rapid development of industrial automation, the production process has become more complicated, and traditional diagnostic methods are difficult to achieve a comprehensive diagnosis of valve faults. Summary of the invention

[0004] The present application provides a valve diagnosis method, device, equipment and storage medium to solve the problems raised by the above-mentioned background technology.

[0005] In a first aspect, the present application provides a valve diagnosis method, comprising: Constructing a valve diagnostic strategy library; the valve diagnostic strategy library includes diagnostic strategies corresponding to multiple different types of valves; During the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem; A target diagnostic strategy corresponding to the target valve is obtained from the valve diagnostic strategy library, and the force information is analyzed based on the target diagnostic strategy to obtain a diagnostic result of the target valve.

[0006] In a possible implementation, the building of a valve diagnosis strategy library includes: For each different type of valve, obtain standard force information of the valve stem of the valve in a non-fault state, and respectively obtain abnormal force information of the valve stem of the valve in several fault states; For each different type of valve, a diagnostic strategy corresponding to the valve is generated based on the standard force information corresponding to the valve and the abnormal force information of the valve under various fault conditions, and the diagnostic strategy is marked based on the model code of the valve; The marked diagnostic strategies are integrated to obtain the valve diagnostic strategy library.

[0007] In a possible implementation, generating a diagnostic strategy corresponding to the valve based on standard force information corresponding to the valve and abnormal force information of the valve under various fault states includes: For each of the fault states, generating a diagnosis scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state, and marking the diagnosis scheme based on the fault state; The marked diagnostic schemes are integrated to obtain the diagnostic strategy corresponding to the valve.

[0008] In a possible implementation, generating a diagnosis scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state includes: Draw a first change curve and a second change curve in a preset plane rectangular coordinate system; wherein the first change curve is a change curve corresponding to the standard force information, the second change curve is a change curve corresponding to the abnormal force information, the abscissa of the plane rectangular coordinate system is the operating time, and the ordinate is the stress value; Determining a target time point based on the first change curve and the second change curve; wherein at the target time point, an absolute value of a difference between a first stress value corresponding to the first change curve and a second stress value corresponding to the second change curve is greater than a preset absolute value; Determining diagnostic standard information based on each of the target time points and the first change curve; A diagnosis scheme corresponding to the fault state is generated based on the diagnosis specification information.

[0009] In a possible implementation, the determining the diagnostic standard information based on each of the target time points and the first change curve includes: For each of the target time points, determining a standard stress value corresponding to the target time point on the first change curve, and constructing a mapping relationship between the target time point and the standard stress value; The mapping relationships are integrated to obtain a standard stress comparison table, and each target time point is determined as a test time point, and diagnostic specification information is generated based on the standard stress comparison table and each test time point.

[0010] In a possible implementation, the generating a diagnosis solution corresponding to the fault state based on the diagnosis specification information includes: For each of the test time points, the test stress value corresponding to each of the test time points is compared with the standard stress value. If the test stress value corresponding to each of the test time points is consistent with the standard stress value, it is determined that the fault state does not exist. If the test stress value corresponding to any of the test time points is inconsistent with the standard stress value, the fault state is determined to be a potential fault.

[0011] In a second aspect, the present application provides a valve diagnostic device, comprising: A construction module, used to construct a valve diagnosis strategy library; the valve diagnosis strategy library includes diagnosis strategies corresponding to multiple different types of valves; An acquisition module is used to acquire the stress value of the valve stem of the target valve in the operation process in real time through a preset stress sensor during the operation of the target valve, so as to obtain the force information of the valve stem; An analysis module is used to obtain a target diagnosis strategy corresponding to the target valve in the valve diagnosis strategy library, and analyze the force information based on the target diagnosis strategy to obtain a diagnosis result of the target valve.

[0012] In a third aspect, the present application provides a terminal device, characterized in that the terminal device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the valve diagnosis method as described in any one of the above items is implemented.

[0013] In a fourth aspect, the present application provides a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, wherein when the computer program is executed by a processor, the valve diagnosis method as described in any one of the above items is implemented.

[0014] The present application provides a valve diagnosis method, apparatus, equipment and storage medium, wherein the method comprises: constructing a valve diagnosis strategy library; the valve diagnosis strategy library comprises diagnosis strategies corresponding to multiple different types of valves; during the operation of a target valve, obtaining in real time the stress value to which the valve stem of the target valve is subjected during the operation through a preset stress sensor, and obtaining the force information of the valve stem; obtaining a target diagnosis strategy corresponding to the target valve in the valve diagnosis strategy library, and analyzing the force information based on the target diagnosis strategy to obtain a diagnosis result of the target valve. The method provided in this embodiment, on the one hand, constructs a valve diagnosis strategy library, so that the valve diagnosis strategy library includes diagnosis strategies for multiple different types of valves, so that the diagnosis process can be carried out for specific valve types, reducing the possibility of misdiagnosis and improving the accuracy of diagnosis. On the other hand, during the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem, and the target diagnosis strategy corresponding to the target valve is obtained in the valve diagnosis strategy library, and the force information is analyzed based on the target diagnosis strategy to obtain the diagnosis result of the target valve, which is conducive to realizing a comprehensive diagnosis of valve faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 A flow chart of a valve diagnosis method provided in an embodiment of the present application; Figure 2 A schematic block diagram of the structure of a valve diagnostic device provided in an embodiment of the present application; Figure 3 A schematic block diagram of the structure of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change based on actual conditions.

[0019] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0020] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0021] Valves are one of the key control devices in industrial production and are widely used in the fields of petroleum, chemical industry, electric power, metallurgy, etc. The normal operation of valves is crucial to the safety and efficiency of the process. However, during long-term use, valves may suffer performance degradation or failure due to wear, corrosion, aging, external environmental influences, etc. If valve failures are not detected and handled in time, it may cause production accidents, equipment damage, and even cause serious safety hazards. Therefore, it is of great significance to diagnose valve faults and promptly discover and eliminate potential problems to ensure the stable operation of industrial systems.

[0022] Existing valve fault diagnosis technology is difficult to achieve comprehensive diagnosis of valve faults. To this end, the present application provides a valve diagnosis method, device, equipment and storage medium to solve the above problems.

[0023] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] See also Figure 1 , Figure 1 A flow chart of a valve diagnostic method provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the valve diagnosis method provided in the embodiment of the present application includes steps S1 to S3.

[0025] Step S1, constructing a valve diagnosis strategy library; the valve diagnosis strategy library includes diagnosis strategies corresponding to multiple different types of valves.

[0026] Among them, different types of valves include but are not limited to electric valves, electric regulating valves and electric check valves.

[0027] Specifically, constructing a valve diagnostic strategy library includes: for each different type of valve, obtaining the standard force information of the valve stem of the valve in a fault-free state, and respectively obtaining the abnormal force information of the valve stem of the valve in several fault states; for each different type of valve, generating a diagnostic strategy corresponding to the valve based on the standard force information corresponding to the valve and the abnormal force information of the valve in each fault state, and marking the diagnostic strategy based on the model code of the valve; integrating the marked diagnostic strategies to obtain the valve diagnostic strategy library. It can be understood that by constructing a diagnostic strategy library containing diagnostic strategies corresponding to different types of valves, when there are multiple different types of valves in the same system, different types of valves can be diagnosed in a targeted manner, thereby improving the effectiveness of valve diagnostic results.

[0028] Further, the standard force information of the valve stem of the valve in a fault-free state is obtained, and the abnormal force information of the valve stem of the valve in several fault states is obtained respectively, including: obtaining the mechanical structure parameter information of the valve and the application scenario information of the valve; constructing a virtual application scenario based on the application scenario information, and constructing a virtual valve corresponding to the valve based on the mechanical structure parameter information, and placing the virtual valve in the virtual application scenario; controlling the virtual valve to operate in a fault-free state, and obtaining the standard force information through a preset virtual stress sensor during the operation of the virtual valve in the fault-free state; for various fault states, controlling the virtual valve to operate in the fault state, and obtaining the abnormal force information corresponding to the fault state through a preset virtual stress sensor during the operation of the virtual valve in the fault state. It can be understood that by constructing a virtual application scenario and a virtual valve, and using a virtual stress sensor to obtain the standard force information and abnormal force information of the valve in a fault-free state and a fault state respectively, it is helpful to comprehensively and systematically generate a valve diagnosis strategy, improve the accuracy and reliability of fault diagnosis, and thus ensure the safety of the industrial system and the forward-looking nature of maintenance.

[0029] Furthermore, the generating of the diagnostic strategy corresponding to the valve based on the standard force information corresponding to the valve and the abnormal force information of the valve under each fault state includes: for each fault state, generating a diagnostic scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state, and marking the diagnostic scheme based on the fault state; integrating the marked diagnostic schemes to obtain the diagnostic strategy corresponding to the valve. It can be understood that this scheme generates a corresponding diagnostic scheme for each fault state, ensures the pertinence and accuracy of the diagnostic scheme, and helps to effectively identify specific fault states.

[0030] Further, the generating of a diagnostic scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state includes: drawing a first change curve and a second change curve in a preset plane rectangular coordinate system; wherein the first change curve is the change curve corresponding to the standard force information, the second change curve is the change curve corresponding to the abnormal force information, the horizontal coordinate of the plane rectangular coordinate system is the operating time, and the vertical coordinate is the stress value; determining a target time point based on the first change curve and the second change curve; wherein at the target time point, the absolute value of the difference between the first stress value corresponding to the first change curve and the second stress value corresponding to the second change curve is greater than a preset absolute value; determining diagnostic specification information based on each of the target time points and the first change curve; and generating a diagnostic scheme corresponding to the fault state based on the diagnostic specification information. It can be understood that by comparing the first change curve corresponding to the standard force information and the second change curve corresponding to the abnormal force information, the abnormal information at the target time point can be accurately identified, the corresponding diagnostic specification information can be generated and integrated into a diagnostic plan for the fault state, which helps to accurately capture small but critical fault signs, thereby improving the reliability of valve diagnostic results and ensuring the stable operation of industrial systems and early fault warning.

[0031] Further, the determination of diagnostic standard information based on each of the target time points and the first change curve includes: for each of the target time points, determining the standard stress value corresponding to the target time point on the first change curve, and constructing a mapping relationship between the target time point and the standard stress value; integrating each of the mapping relationships to obtain a standard stress comparison table, and determining each of the target time points as a test time point, and generating diagnostic standard information based on the standard stress comparison table and each of the test time points. It can be understood that by constructing a mapping relationship between the target time point and the standard stress value, and integrating each of the mapping relationships to obtain the standard stress comparison table, the accuracy and systematicness of the diagnostic standard information are ensured, so that the diagnostic process can be compared based on the standard stress value corresponding to the specific test time point, which helps to improve the accuracy of the diagnostic results.

[0032] Further, the generating of the diagnostic scheme corresponding to the fault state based on the diagnostic specification information includes: for each of the test time points, respectively comparing the test stress value corresponding to each of the test time points with the standard stress value, if the test stress value corresponding to each of the test time points is consistent with the standard stress value, determining that the fault state does not exist, if the test stress value corresponding to any of the test time points is inconsistent with the standard stress value, determining that the fault state is a potential fault. It can be understood that if the test stress value corresponding to any of the test time points is inconsistent with the standard stress value, determining that the fault state is a potential fault helps to ensure the safe operation and preventive maintenance of the industrial system.

[0033] Step S2: During the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem.

[0034] The operation process of the target valve includes a valve closing stroke and a valve opening stroke.

[0035] Step S3: obtaining a target diagnostic strategy corresponding to the target valve from the valve diagnostic strategy library, and analyzing the force information based on the target diagnostic strategy to obtain a diagnostic result of the target valve.

[0036] Specifically, each diagnostic strategy in the valve diagnostic strategy library is provided with an encryption password, and the target diagnostic strategy corresponding to the target valve in the valve diagnostic strategy library includes: obtaining the model code of the target valve; wherein the model code includes the same number of numbers and letters, and the number of the numbers and the number of the letters are both greater than 6; arranging the numbers in the model code from left to right in sequence to obtain a number sequence; arranging the letters in the model code from left to right in sequence to obtain a letter sequence; placing the letter sequence below the number sequence to obtain a first matrix; segmenting the first matrix to obtain a second matrix and a third matrix; wherein the elements in the second matrix are consistent with the last two columns of the first matrix, and the second matrix and the third matrix are multiplied to obtain a decryption matrix; decrypting each diagnostic strategy in the valve diagnostic strategy library based on the decryption matrix, and determining that the diagnostic strategy that is successfully decrypted is the target diagnostic strategy. The elements in the second matrix are consistent with the last two columns of the first matrix, that is, when segmenting the first matrix, the first matrix is ​​segmented between the second to last column vector and the third to last column vector of the first matrix. It can be understood that by encrypting each diagnostic strategy in the valve diagnostic strategy library, it is ensured that the diagnostic strategy is not accessed or tampered with by unauthorized users during storage and transmission. The matrix splitting and multiplication operations in this scheme increase the complexity of the decryption process, making it much more difficult to crack and attack, and further ensuring the security of the diagnostic strategy library.

[0037] The method provided in this embodiment, on the one hand, constructs a valve diagnosis strategy library, so that the valve diagnosis strategy library includes diagnosis strategies for multiple different types of valves, so that the diagnosis process can be carried out for specific valve types, reducing the possibility of misdiagnosis and improving the accuracy of diagnosis. On the other hand, during the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem, and the target diagnosis strategy corresponding to the target valve is obtained in the valve diagnosis strategy library, and the force information is analyzed based on the target diagnosis strategy to obtain the diagnosis result of the target valve, which is conducive to realizing a comprehensive diagnosis of valve faults.

[0038] See also Figure 2 , Figure 2 A schematic block diagram of the structure of the valve diagnostic device 100 provided in the embodiment of the present application is shown in FIG. Figure 2 As shown, the valve diagnostic device 100 comprises: The construction module 110 is used to construct a valve diagnosis strategy library; the valve diagnosis strategy library includes diagnosis strategies corresponding to multiple different types of valves.

[0039] The acquisition module 120 is used to acquire the stress value of the valve stem of the target valve in real time during the operation of the target valve through a preset stress sensor to obtain the force information of the valve stem.

[0040] The analysis module 130 is used to obtain the target diagnosis strategy corresponding to the target valve in the valve diagnosis strategy library, and analyze the force information based on the target diagnosis strategy to obtain the diagnosis result of the target valve.

[0041] It should be noted that technicians in the relevant technical field can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described device and each module can refer to the corresponding process in the aforementioned valve diagnosis method embodiment, and will not be repeated here.

[0042] The terminal device 200 provided in the above embodiment can be implemented in the form of a computer program. The computer program can be Figure 3 The system is run on the terminal device 200 shown.

[0043] See also Figure 3 , Figure 3 The present invention provides a schematic block diagram of the structure of a terminal device 200 according to an embodiment of the present application. The terminal device 200 includes a processor 201 and a memory 202. The processor 201 and the memory 202 are connected via a device bus 203, wherein the memory 202 may include a non-volatile storage medium and an internal memory.

[0044] The non-volatile storage medium can store a computer program. The computer program includes program instructions, and when the program instructions are executed by the processor 201, the processor 201 can execute any of the above-mentioned valve diagnosis methods.

[0045] The processor 201 is used to provide computing and control capabilities to support the operation of the entire terminal device 200.

[0046] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor 201, the processor 201 can execute any of the above-mentioned valve diagnosis methods.

[0047] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the terminal device 200 involved in the scheme of the present application. The specific terminal device 200 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0048] It should be understood that the processor 201 may be a central processing unit (CPU), and the processor 201 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0049] In some embodiments, the processor 201 is used to run a computer program stored in the memory to implement the following steps: Constructing a valve diagnostic strategy library; the valve diagnostic strategy library includes diagnostic strategies corresponding to multiple different types of valves; During the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem; A target diagnostic strategy corresponding to the target valve is obtained from the valve diagnostic strategy library, and the force information is analyzed based on the target diagnostic strategy to obtain a diagnostic result of the target valve.

[0050] It should be noted that those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the terminal device 200 described above can refer to the corresponding process of the aforementioned valve diagnosis method, and will not be repeated here.

[0051] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by one or more processors, the one or more processors implement the valve diagnosis method provided in the embodiment of the present application.

[0052] The computer-readable storage medium may be an internal storage unit of the terminal device 200 in the aforementioned embodiment, such as a hard disk or memory of the terminal device 200. The computer-readable storage medium may also be an external storage device of the terminal device 200, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped with the terminal device 200.

[0053] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A valve diagnosis method, characterized in that: include: Constructing a valve diagnostic strategy library; the valve diagnostic strategy library includes diagnostic strategies corresponding to multiple different types of valves; During the operation of the target valve, the stress value of the valve stem of the target valve during the operation is obtained in real time through a preset stress sensor to obtain the force information of the valve stem; A target diagnostic strategy corresponding to the target valve is obtained from the valve diagnostic strategy library, and the force information is analyzed based on the target diagnostic strategy to obtain a diagnostic result of the target valve.

2. The valve diagnosis method according to claim 1, characterized in that: The construction of the valve diagnosis strategy library includes: For each different type of valve, obtain standard force information of the valve stem of the valve in a non-fault state, and respectively obtain abnormal force information of the valve stem of the valve in several fault states; For each different type of valve, a diagnostic strategy corresponding to the valve is generated based on the standard force information corresponding to the valve and the abnormal force information of the valve under various fault conditions, and the diagnostic strategy is marked based on the model code of the valve; The marked diagnostic strategies are integrated to obtain the valve diagnostic strategy library.

3. The valve diagnosis method according to claim 2, characterized in that: The generating of the diagnostic strategy corresponding to the valve based on the standard force information corresponding to the valve and the abnormal force information of the valve under various fault conditions comprises: For each of the fault states, generating a diagnosis scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state, and marking the diagnosis scheme based on the fault state; The marked diagnostic schemes are integrated to obtain the diagnostic strategy corresponding to the valve.

4. The valve diagnosis method according to claim 3, characterized in that: The generating a diagnosis scheme corresponding to the fault state based on the standard force information and the abnormal force information corresponding to the fault state includes: Draw a first change curve and a second change curve in a preset plane rectangular coordinate system; wherein the first change curve is a change curve corresponding to the standard force information, the second change curve is a change curve corresponding to the abnormal force information, the abscissa of the plane rectangular coordinate system is the operating time, and the ordinate is the stress value; Determining a target time point based on the first change curve and the second change curve; wherein at the target time point, an absolute value of a difference between a first stress value corresponding to the first change curve and a second stress value corresponding to the second change curve is greater than a preset absolute value; Determining diagnostic standard information based on each of the target time points and the first change curve; A diagnosis scheme corresponding to the fault state is generated based on the diagnosis specification information.

5. The valve diagnosis method according to claim 4, characterized in that: The determining of diagnostic standard information based on each of the target time points and the first change curve includes: For each of the target time points, determining a standard stress value corresponding to the target time point on the first change curve, and constructing a mapping relationship between the target time point and the standard stress value; The mapping relationships are integrated to obtain a standard stress comparison table, and each target time point is determined as a test time point, and diagnostic specification information is generated based on the standard stress comparison table and each test time point.

6. The valve diagnosis method according to claim 5, characterized in that: The generating a diagnostic solution corresponding to the fault state based on the diagnostic specification information includes: For each of the test time points, the test stress value corresponding to each of the test time points is compared with the standard stress value. If the test stress value corresponding to each of the test time points is consistent with the standard stress value, it is determined that the fault state does not exist. If the test stress value corresponding to any of the test time points is inconsistent with the standard stress value, the fault state is determined to be a potential fault.

7. A valve diagnostic device, characterized in that: include: A construction module, used to construct a valve diagnosis strategy library; the valve diagnosis strategy library includes diagnosis strategies corresponding to multiple different types of valves; An acquisition module is used to acquire the stress value of the valve stem of the target valve in the operation process in real time through a preset stress sensor during the operation of the target valve, so as to obtain the force information of the valve stem; An analysis module is used to obtain a target diagnosis strategy corresponding to the target valve in the valve diagnosis strategy library, and analyze the force information based on the target diagnosis strategy to obtain a diagnosis result of the target valve.

8. A terminal device, characterized in that: The terminal device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the valve diagnosis method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: A computer program is stored on the computer-readable storage medium, wherein when the computer program is executed by a processor, the valve diagnosis method according to any one of claims 1 to 6 is implemented.

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