CN117664239B - Real-time monitoring system and method for thermal ageing condition of duplex stainless steel - Google Patents
Real-time monitoring system and method for thermal ageing condition of duplex stainless steel Download PDFInfo
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Abstract
The invention belongs to the field of metal material detection, and particularly relates to a system and a method for monitoring the thermal ageing condition of duplex stainless steel in real time. The real-time monitoring system for the heat aging of the duplex stainless steel is a comprehensive multi-sensor system, and integrates software and hardware such as a temperature detection device, a stress detection device, an external aging detection device, an internal aging detection device, a strategy generation device and the like. Through the device, various performance parameters of the duplex stainless steel component can be monitored in real time, the primary aging risk and the secondary aging risk of the duplex stainless steel thermal component can be timely identified, and a corresponding risk elimination strategy is generated according to the degree of abnormality. The system can accurately evaluate the ageing risk of the material, rapidly formulate countermeasures, improve the safety of the material, prolong the service life and provide an accurate early warning and treatment scheme for abnormal conditions.
Description
Technical Field
The invention belongs to the field of metal material detection, and particularly relates to a system and a method for monitoring the thermal ageing condition of duplex stainless steel in real time.
Background
Duplex stainless steel is a duplex structure combining austenite and ferrite, and is widely used in fields of nuclear power, petroleum, chemical industry, etc., because of its high strength, good corrosion resistance and cracking resistance, and excellent welding performance. However, the general high temperature use temperature of duplex stainless steel ranges from 800 ℃ to 1000 ℃, and when duplex stainless steel parts are subjected to continuous high temperature environment exceeding 1000 ℃ or rapid temperature change, thermal aging may occur, which may further cause deterioration of mechanical properties of materials. Such aging is manifested by a decrease in impact toughness, a deterioration in corrosion resistance, a reduction in fatigue life, and the like. This not only shortens the useful life of the components, but also increases the unsafe factors of the device. In a pressurized water reactor nuclear power station, components such as a primary loop pipeline, a main pump shell, a valve and the like which are made of duplex stainless steel are used, and the problem of thermal aging directly threatens the stable operation of the nuclear power station. Therefore, a method capable of monitoring the heat aging condition of duplex stainless steel in real time is urgently needed.
The prior detection of heat aging of duplex stainless steel is usually carried out in a laboratory, materials similar to components are placed in a laboratory simulating a service environment, or an accelerated heat aging experiment is carried out under worse conditions. The thermal aging of the materials was evaluated indirectly by testing the mechanical properties of the laboratory materials. The method is time-consuming and labor-consuming, and requires a great deal of manpower, material resources and experiment time; meanwhile, the laboratory data have certain deviation from the data in the real service environment, and are not suitable for the real working condition of the nuclear power station. Therefore, development of the online real-time monitoring method and system for the heat aging condition of the duplex stainless steel under the working condition of the real environment of the nuclear power station is urgent.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a system and a method for monitoring the thermal ageing condition of duplex stainless steel in real time.
The technical scheme adopted by the invention is as follows:
A real-time monitoring system for thermal aging conditions of duplex stainless steel, comprising: the device comprises a main control device, and a temperature detection device, a stress detection device, an external aging detection device, an internal aging detection device and a strategy generation device which are respectively connected with the main control device;
The temperature detection device is used for detecting the surface temperature value and the temperature change rate of the duplex stainless steel part;
The stress detection device is used for detecting stress values born by key positions of the duplex stainless steel part;
the external aging detection device is used for detecting whether performance aging occurs outside the duplex stainless steel part;
the internal aging detection device is used for detecting whether performance aging occurs in the duplex stainless steel part or not;
the strategy generating device is used for formulating a corresponding risk elimination strategy according to the detected aging degree of the duplex stainless steel component.
The main control device controls the temperature detection device to be normally opened, and controls the stress detection device, the external aging detection device, the internal aging detection device and the strategy generation device to be normally closed.
The temperature detection device detects the surface temperature value and the temperature change rate of the duplex stainless steel part, if the surface temperature value and the temperature change rate are compared with the preset standard values in the system, and if the result is abnormal, the material is judged to have a primary ageing risk, and the main control device controls the stress detection device to be started;
The stress detection device detects a real-time stress value born by a key position of the duplex stainless steel part, if the real-time stress value is compared with a preset standard value in the system, and if the result is abnormal, the material is judged to have secondary ageing risk, and the main control device controls the external ageing detection device and the internal ageing detection device to be started;
The external aging detection device detects the external crack, color, deformation and other performance parameters of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The internal aging detection device detects performance parameters such as internal cracks, corrosion potential, current density and the like of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The external aging detection device and the internal aging detection device detect that if the external or internal of the duplex stainless steel component is abnormal in corresponding parameter performance, the material is judged to be aged, and the main control device controls the strategy generation device to be started;
The strategy generating device accurately evaluates the aging risk according to the performance types of abnormal parameters of the materials, combines a data analysis algorithm and an aging model, identifies possible abnormality or predicts aging trend, and establishes a risk elimination strategy.
In certain embodiments:
the external aging detection apparatus includes: a surface crack detection unit, a color detection unit, and a deformation detection unit;
The surface crack detection unit is used for detecting whether cracks are generated on the surface of the duplex stainless steel part or not;
The color detection unit is used for detecting whether the surface color of the duplex stainless steel part is abnormal or not;
The deformation detection unit is used for detecting whether the surface of the duplex stainless steel part deforms.
Further: the internal aging detection apparatus includes: an internal crack detection unit, a corrosion potential detection unit, and a current density detection unit;
The internal crack detection unit is used for detecting whether cracks are generated in the duplex stainless steel part or not;
The corrosion potential detection unit is used for detecting whether the corrosion potential in the duplex stainless steel part is abnormal or not;
the current density detection unit is used for detecting whether the current density inside the duplex stainless steel component is abnormal.
Further: the external aging detection device is based on an image recognition technology, monitors the surface of the component by using a camera or an image recognition system, and observes whether abnormal changes such as cracks, deformation or color occur.
In certain embodiments:
the device also comprises a light intensity detection device and a light supplementing device;
the main control device controls the light intensity detection device to be normally open and controls the light supplementing device to be normally closed;
the light intensity detection device is used for detecting whether the ambient brightness meets the image acquisition condition in the process of carrying out image acquisition on the surface of the duplex stainless steel, and if the ambient brightness is too low, the acquired image data has poor definition, and the main control device controls the light supplementing device to be started;
The light supplementing device uses light sources such as LEDs to enhance the ambient illumination, ensures high quality of the acquired image, and has enough brightness and definition to acquire the image.
In certain embodiments:
the device also comprises a surface reflection detection device and a camera angle adjustment device;
The main control device controls the surface reflection detection device to be normally open and controls the camera angle adjustment device to be normally closed;
the surface reflection detection device is used for detecting whether the collected image on the surface of the duplex stainless steel reflects light or not, the reflection light can influence the deformation, the crack and the color detection of the surface of the duplex stainless steel, and if the reflection light occurs, the main control device controls the starting of the camera angle adjustment device;
The camera angle adjusting device changes the angle of the camera by controlling, so that the reflection phenomenon of the collected duplex stainless steel surface image disappears, and the detection effect is ensured.
A real-time monitoring method for the heat aging condition of duplex stainless steel adopts the real-time monitoring system for the heat aging condition of duplex stainless steel to monitor the aging condition of duplex stainless steel components in a pressurized water reactor nuclear power station in real time.
A storage medium having stored thereon a computer program which when run performs the method of real-time monitoring of the thermal ageing condition of duplex stainless steel.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
The real-time monitoring system for the heat aging of the duplex stainless steel is a comprehensive multi-sensor system, and integrates software and hardware such as a temperature detection device, a stress detection device, an external aging detection device, an internal aging detection device, a strategy generation device and the like. Through the device, various performance parameters of the duplex stainless steel component can be monitored in real time, the primary aging risk and the secondary aging risk of the duplex stainless steel thermal component can be identified in time, the multiple sensor technology is adopted, the performance detection of internal and external parameters is further carried out on the position with the aging risk, the detection comprises the detection of surface cracks, color, deformation, internal cracks, corrosion potential, current density and other anomalies, and corresponding risk elimination strategies are generated according to the anomaly degree. Meanwhile, the system is also provided with a brightness detection and light supplementing device and a surface reflection detection and shooting angle adjustment device, so that the accuracy and definition of image acquisition are ensured. The system can accurately evaluate the ageing risk of the material, rapidly formulate countermeasures, improve the safety of the material, prolong the service life and provide an accurate early warning and treatment scheme for abnormal conditions.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIGS. 1-2 are system block diagrams of a real-time monitoring system for the thermal ageing condition of duplex stainless steel in the invention;
FIG. 3 is a schematic view of an external aging detector according to the present invention;
FIG. 4 is a schematic diagram of an internal aging detector according to the present invention;
FIG. 5 is a flow chart of the method for monitoring the thermal aging condition of the duplex stainless steel in real time.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
Example 1
The embodiment provides a real-time monitoring system for thermal aging conditions of duplex stainless steel, referring to fig. 1, including: the device comprises a main control device, and a temperature detection device, a stress detection device, an external aging detection device, an internal aging detection device and a strategy generation device which are respectively connected with the main control device;
The temperature detection device is used for detecting the temperature value and the temperature change rate of the surface of the duplex stainless steel part, and optionally, a temperature sensor or a temperature detector is adopted for monitoring the working temperature of the surface of the part;
The stress detection device is used for detecting stress values born by key positions of the duplex stainless steel component. Alternatively, strain gauge, strain sensor or extensometer sensor devices are used to directly measure and monitor the change in stress of the material. These sensors can be mounted in strategic locations on the duplex stainless steel component, collecting stress data in real time;
the external aging detection device is used for detecting whether performance aging occurs outside the duplex stainless steel part;
the internal aging detection device is used for detecting whether performance aging occurs in the duplex stainless steel part or not;
the strategy generating device is used for formulating a corresponding risk elimination strategy according to the detected aging degree of the duplex stainless steel component.
Through the scheme, the real-time monitoring system for the thermal aging of the duplex stainless steel monitors various performance parameters of the duplex stainless steel component in real time through the temperature, stress, external aging detection devices and internal aging detection devices, gives out early warning according to abnormal data, further evaluates the aging degree through the strategy generation device and formulates a risk elimination strategy so as to identify potential risks in advance, prolong the service life of the component and provide comprehensive data support for operation and maintenance decisions.
In one embodiment:
Referring to fig. 5, the main control device controls the temperature detection device to be normally opened, and controls the stress detection device, the external aging detection device, the internal aging detection device and the strategy generation device to be normally closed;
The aging process of the material can be accelerated in a high-temperature environment, so that the temperature range of the material performance of the dual-phase stainless steel is reduced, the temperature range is between 800 ℃ and 1000 ℃, when the dual-phase stainless steel part is in a continuous high-temperature environment exceeding 1000 ℃ or is subjected to rapid temperature change, the thermal aging is possible, so that the temperature of the dual-phase stainless steel part needs to be detected firstly, the temperature detection device is arranged to detect the surface temperature value and the temperature change rate of the dual-phase stainless steel part, if the surface temperature value and the temperature change rate are compared with the preset standard value in the system, in general, if the temperature is higher than 1000 ℃ and the duration is higher than 5 hours, and the temperature change rate is higher than 100 ℃ per hour, namely, when the judging result is abnormal, the material is judged to have primary aging risk, and the problems of fatigue, deformation, cracking and the like of the material are all the precursors of aging;
One of the other parameters that directly leads to aging of the material is the amount of stress to which the material is subjected, which is a critical factor in causing aging of the material. The high stress can cause the problems of material fatigue, deformation, cracks and the like, which are all precursors of ageing, so that the stress on the duplex stainless steel part is required to be monitored in real time later, and the main control device controls the stress detection device to be started; the stress detection device detects a real-time stress value born by a key position of the duplex stainless steel part, if the real-time stress value is compared with a preset standard value in the system, and if the result is abnormal, the material is judged to have secondary ageing risk, and the main control device controls the external ageing detection device and the internal ageing detection device to be started;
When judging that the two-phase stainless steel part has the secondary ageing risk, namely the material has high probability of ageing phenomenon, further monitoring ageing performance parameters of the material, and preparing a reasonable risk elimination strategy according to the ageing grade; specifically, the method comprises the following steps:
The external aging detection device detects the external crack, color, deformation and other performance parameters of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The internal aging detection device detects performance parameters such as internal cracks, corrosion potential, current density and the like of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The external aging detection device and the internal aging detection device detect that if the external or internal of the duplex stainless steel component is abnormal in corresponding parameter performance, the material is judged to be aged, and the main control device controls the strategy generation device to be started; the strategy generating device accurately evaluates the aging risk according to the performance types of abnormal parameters of the materials, combines a data analysis algorithm and an aging model, identifies possible abnormality or predicts aging trend, and establishes a risk elimination strategy.
Further, the formulation of risk elimination strategies is generally dependent on the degree of aging, the extent of influence and the specifics of the material, and possible ways of handling include:
Repairing or reinforcing: if only the performance abnormality of the external parameters occurs, for example, only the color abnormality occurs, the first-order aging degree is judged: partial aging or slight damage does not affect the function and safety of the alloy, and repair or reinforcement measures can be taken. This may include repair welding, repairing cracks, reinforcing support structures, and the like.
Replacement parts: if the performance of the internal and external parameters of the duplex stainless steel part is abnormal, judging as the secondary aging degree: affecting its function and safety, the safest approach is probably to replace it. This involves the complete replacement of severely aged components or damaged parts with new materials.
It should be noted that: in dealing with the aging problems of duplex stainless steel components, safety, environmental and handling concerns must be considered. Therefore, it is often necessary to evaluate by a professional engineer or related expert and follow the relevant safety standards and operating procedures to take appropriate treatment measures.
In one embodiment:
referring to fig. 3, the external aging detection apparatus includes: a surface crack detection unit, a color detection unit, and a deformation detection unit;
The surface crack detection unit is used for detecting whether cracks are generated on the surface of the duplex stainless steel part or not;
the color detection unit is used for detecting whether the surface color of the duplex stainless steel part is abnormal. Optionally, a high-definition camera is adopted;
The deformation detection unit is used for detecting whether the surface of the duplex stainless steel part deforms.
The external aging detection device is based on an image recognition technology, monitors the surface of the component by using a camera or an image recognition system, and observes whether abnormal changes such as cracks, deformation or color occur.
In one embodiment:
Referring to fig. 4, the internal aging detection apparatus includes: an internal crack detection unit, a corrosion potential detection unit, and a current density detection unit;
the internal crack detection unit is used for detecting whether cracks are generated in the duplex stainless steel component. Optionally, the internal crack detection unit employs an ultrasonic generator, detects the component using ultrasonic technology, and identifies possible cracks, deformations, or other internal structural changes;
the corrosion potential detection unit is used for detecting whether the corrosion potential in the duplex stainless steel part is abnormal or not, and optionally, the corrosion potential detection unit adopts an electrochemical sensor, and the electrochemical sensor is used for detecting the corrosion state and the corrosion potential of the surface of the part so as to monitor the corrosion performance of the part in real time;
the current density detection unit is used for detecting whether the current density inside the duplex stainless steel component is abnormal. Optionally, the current density detection unit adopts an electrochemical sensor: these sensors measure changes in current density by monitoring the electrochemical process. Anomalies in current density can be detected by electrochemical sensors in different environments, such as corrosive environments or chemical reaction environments.
In another preferred embodiment:
referring to fig. 2, the monitoring system further includes a light intensity detection device and a light supplementing device;
optionally, the light intensity detection device is a light intensity detection sensor, and the light supplementing device is an LED light source;
the main control device controls the light intensity detection device to be normally open and controls the light supplementing device to be normally closed;
the light intensity detection device is used for detecting whether the ambient brightness meets the image acquisition condition in the process of carrying out image acquisition on the surface of the duplex stainless steel, and if the ambient brightness is too low, the acquired image data has poor definition, and the main control device controls the light supplementing device to be started;
The light supplementing device uses light sources such as LEDs to enhance the ambient illumination, ensures high quality of the acquired image, and has enough brightness and definition to acquire the image.
The above embodiments provide an integrated solution of light intensity detection means and light filling means aimed at ensuring a high quality acquisition of images of the duplex stainless steel surface. The light intensity detection device is responsible for monitoring the ambient brightness, and once the ambient brightness is detected to be insufficient to ensure the image acquisition condition, the main control device starts the light supplementing device, and the device uses light sources such as LEDs to enhance the ambient illumination.
Through the scheme, the following technical effects are realized:
optimizing the image quality: by means of light intensity detection, the system can automatically judge whether the ambient brightness meets the optimal condition of the acquired image. The light supplementing device is started once the insufficient brightness is detected, so that high quality and definition of image acquisition are ensured.
Data reliability is improved: the acquired image is ensured to have enough brightness and definition, and the reliability of the data is improved. High definition images can provide more accurate and reliable analysis results and data support.
Automated image acquisition: the system realizes automatic environment brightness detection and light supplementing operation, reduces the need of manual intervention, and improves the automation degree and the operation convenience of the system.
The system can ensure that high-quality image data are acquired under various environmental conditions, is beneficial to accurately monitoring the surface state of the duplex stainless steel, and provides a reliable data basis for further analysis and processing.
In another preferred embodiment:
referring to fig. 2, the camera also comprises a surface reflection detection device and a camera angle adjustment device;
The main control device controls the surface reflection detection device to be normally open and controls the camera angle adjustment device to be normally closed;
the surface reflection detection device is used for detecting whether the collected image on the surface of the duplex stainless steel reflects light or not, the reflection light can influence the deformation, the crack and the color detection of the surface of the duplex stainless steel, and if the reflection light occurs, the main control device controls the starting of the camera angle adjustment device;
The camera angle adjusting device changes the angle of the camera by controlling, so that the reflection phenomenon of the collected duplex stainless steel surface image disappears, and the detection effect is ensured.
The above embodiments provide an integrated solution of a surface reflection detection device and an imaging angle adjustment device, aiming at ensuring the quality of duplex stainless steel surface images, in particular avoiding or reducing the influence of reflection on the image quality and subsequent analysis.
The scheme realizes the following technical effects:
And (3) reflection detection optimization: the surface reflection detection device can immediately monitor the reflection condition in the duplex stainless steel surface image. Reflection of light may interfere with or impair the accuracy of detection of surface deformations, cracks or colors.
Automatic camera angle adjustment: when the surface reflection is detected, the main control device starts the image pickup angle adjusting device. The device can eliminate or reduce the reflection phenomenon in the image by controlling the angle of the camera. This ensures the sharpness and quality of the acquired image.
Data reliability is improved: by eliminating or reducing the reflection phenomenon, the definition and accuracy of the duplex stainless steel surface image are ensured, and the reliability and usability of data acquisition are improved.
Automated operation and accuracy: the system realizes automatic reflection detection and shooting angle adjustment operation, reduces the requirement of manual intervention, and ensures the detection accuracy and consistency.
In conclusion, the system can effectively avoid or reduce negative effects of reflection on the image quality and detection result of the surface of the duplex stainless steel, ensure the reliability and accuracy of the acquired data and improve the effectiveness of subsequent analysis.
Example 2
The invention also provides a real-time monitoring method for the heat aging condition of the duplex stainless steel, which is used for monitoring the aging condition of the duplex stainless steel component in the pressurized water reactor nuclear power station in real time.
It should be understood that although described in a certain order, the steps are not necessarily performed sequentially in the order described. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, some steps of the present embodiment may include a plurality of steps or stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily sequential, but may be performed alternately or alternately with at least a part of the steps or stages in other steps or other steps.
Example 3
In another aspect, the present invention further provides a storage medium, where a computer program is stored, and the computer program is executed to perform the method for monitoring the thermal ageing condition of the duplex stainless steel in real time.
Those skilled in the art will appreciate that implementing all or part of the processes of the methods of the embodiments described above may be accomplished by computer programs characterized by computer instructions that, when executed, cause the associated hardware to perform the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory.
The non-volatile memory may include read-only memory, magnetic tape, floppy disk, flash memory, optical memory, etc. Volatile memory can include random access memory or external cache memory. By way of illustration, and not limitation, RAM can take many forms, such as static random access memory or dynamic random access memory.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a pressurized water reactor nuclear power station duplex stainless steel heat ageing situation real-time supervision system which characterized in that includes: the device comprises a main control device, and a temperature detection device, a stress detection device, an external aging detection device, an internal aging detection device and a strategy generation device which are respectively connected with the main control device;
The temperature detection device is used for detecting the surface temperature value and the temperature change rate of the duplex stainless steel part;
The stress detection device is used for detecting stress values born by key positions of the duplex stainless steel part;
the external aging detection device is used for detecting whether performance aging occurs outside the duplex stainless steel part;
the internal aging detection device is used for detecting whether performance aging occurs in the duplex stainless steel part or not;
the strategy generating device is used for formulating a corresponding risk elimination strategy according to the detected aging degree of the duplex stainless steel part;
the main control device controls the temperature detection device to be normally opened, and controls the stress detection device, the external aging detection device, the internal aging detection device and the strategy generation device to be normally closed;
The temperature detection device detects the surface temperature value and the temperature change rate of the duplex stainless steel part, if the surface temperature value and the temperature change rate are compared with the preset standard values in the system, and if the result is abnormal, the material is judged to have a primary ageing risk, and the main control device controls the stress detection device to be started;
The stress detection device detects a real-time stress value born by a key position of the duplex stainless steel part, when the real-time stress value is compared with a preset standard value in the system and the result is abnormal, the material is judged to possibly have secondary aging risk, and the main control device controls the external aging detection device and the internal aging detection device to be started;
The external aging detection device detects external cracks, colors and deformation performance parameters of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The internal aging detection device detects internal cracks, corrosion potential and current density performance parameters of the duplex stainless steel part in real time, and transmits abnormal data to the main control device for analysis;
The external aging detection device and the internal aging detection device detect that the corresponding parameter performance abnormality occurs outside or inside the duplex stainless steel part, the material is judged to be aged, and the main control device controls the strategy generation device to be started;
The strategy generating device accurately evaluates the aging risk according to the performance types of abnormal parameters of the materials, combines a data analysis algorithm and an aging model, identifies possible abnormality or predicts aging trend, and establishes a risk elimination strategy.
2. The system for monitoring the thermal aging condition of the duplex stainless steel of the pressurized water reactor nuclear power plant in real time according to claim 1, wherein the external aging detection device comprises: a surface crack detection unit, a color detection unit, and a deformation detection unit;
The surface crack detection unit is used for detecting whether cracks are generated on the surface of the duplex stainless steel part or not;
The color detection unit is used for detecting whether the surface color of the duplex stainless steel part is abnormal or not;
The deformation detection unit is used for detecting whether the surface of the duplex stainless steel part deforms.
3. The system for monitoring the thermal aging condition of the duplex stainless steel of the pressurized water reactor nuclear power plant in real time according to claim 2, wherein the internal aging detection device comprises: an internal crack detection unit, a corrosion potential detection unit, and a current density detection unit;
The internal crack detection unit is used for detecting whether cracks are generated in the duplex stainless steel part or not;
The corrosion potential detection unit is used for detecting whether the corrosion potential in the duplex stainless steel part is abnormal or not;
the current density detection unit is used for detecting whether the current density inside the duplex stainless steel component is abnormal.
4. The system for monitoring the thermal ageing condition of the duplex stainless steel of the pressurized water reactor nuclear power station in real time according to claim 1, wherein the external ageing detection device is used for monitoring the surface of the component by using a camera based on an image recognition technology to observe whether cracks, deformation or abnormal color changes occur.
5. The system for monitoring the thermal ageing condition of the duplex stainless steel of the pressurized water reactor nuclear power station in real time according to claim 4, further comprising a light intensity detection device and a light supplementing device;
the main control device controls the light intensity detection device to be normally open and controls the light supplementing device to be normally closed;
the light intensity detection device is used for detecting whether the ambient brightness meets the image acquisition condition in the process of carrying out image acquisition on the surface of the duplex stainless steel, and if the ambient brightness is too low, the acquired image data has poor definition, and the main control device controls the light supplementing device to be started;
The light supplementing device uses the LED light source to strengthen the environmental illumination, ensures the high quality of the acquired image, and has enough brightness and definition for image acquisition.
6. The system for monitoring the thermal ageing condition of the duplex stainless steel of the pressurized water reactor nuclear power station in real time according to claim 5, further comprising a surface reflection detection device and a camera angle adjustment device;
The main control device controls the surface reflection detection device to be normally open and controls the camera angle adjustment device to be normally closed;
the surface reflection detection device is used for detecting whether the collected image on the surface of the duplex stainless steel reflects light or not, the reflection light can influence the deformation, the crack and the color detection of the surface of the duplex stainless steel, and if the reflection light occurs, the main control device controls the starting of the camera angle adjustment device;
The camera angle adjusting device changes the angle of the camera by controlling, so that the reflection phenomenon of the collected duplex stainless steel surface image disappears, and the detection effect is ensured.
7. A method for monitoring the thermal ageing condition of duplex stainless steel in a pressurized water reactor nuclear power station in real time, which is characterized in that the real-time monitoring system for the thermal ageing condition of duplex stainless steel in a pressurized water reactor nuclear power station is adopted, wherein the real-time monitoring system is used for monitoring the ageing condition of duplex stainless steel components in the pressurized water reactor nuclear power station in real time.
8. A storage medium, wherein a computer program is stored on the storage medium, and the computer program is executed to perform the method for monitoring the thermal aging condition of the duplex stainless steel of the pressurized water reactor nuclear power plant in real time according to claim 7.
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