Transformer ultrasonic sensor weather resistance test system and method

Abstract

The invention discloses a transformer ultrasonic sensor weather fastness test system and method.The transformer ultrasonic sensor weather fastness test system comprises a test box, an environment simulation system, a sensor supporting piece and a performance monitoring system, and the sensor supporting piece is installed in the test box and used for installing a tested ultrasonic sensor; the environment simulation system is arranged in the test box and is used for simulating various climate environments for carrying out performance tests on the tested ultrasonic sensor; and the performance detection system is used for monitoring a test signal in the test process of the tested ultrasonic sensor and carrying out performance analysis.

Description

Technical Field

[0001] This application relates to the field of transformer ultrasonic sensor testing technology, and in particular to a transformer ultrasonic sensor weathering resistance testing system and method. Background Technology

[0002] Ultrasonic testing of partial discharge in transformers is an effective method for detecting the operating status of transformers. The reliability and stability of ultrasonic sensors after on-site installation are crucial. However, ultrasonic sensors operate in high-frequency vibration and high-temperature environments for extended periods. Environmental stress and mechanical wear can cause sensor aging, leading to key performance issues such as reduced sensitivity, insufficient dynamic range, or excessive linearity errors. These defects can hinder accurate assessment of transformer operating status. Therefore, environmental weathering tests need to be conducted before ultrasonic sensors are finalized to detect performance changes under long-term environmental conditions, ensuring their reliability in practical applications.

[0003] Currently, when conducting weathering tests on ultrasonic sensors, the installation method of the sensors is relatively fixed. Performance monitoring during the test usually requires removing the sensors from the test environment, which disrupts the continuity of the test environment. Moreover, frequent disassembly may damage the sensors and affect the accuracy of the test results. At the same time, existing test equipment lacks a complete performance monitoring system, which cannot monitor the key performance indicators such as sensitivity, dynamic range, and linearity of the sensors in real time and comprehensively during the temperature, humidity, and heat aging process. This is not conducive to in-depth analysis of sensor performance changes and failure time. Summary of the Invention

[0004] In view of the technical problems existing in the background art, this application provides a weathering resistance test system and method for transformer ultrasonic sensors.

[0005] According to one aspect of this application, a weathering resistance testing system for a transformer ultrasonic sensor is provided, comprising: a test chamber, an environmental simulation system, a sensor support, and a performance monitoring system, wherein...

[0006] The sensor support is installed inside the test chamber and is used to install the ultrasonic sensor under test;

[0007] The environmental simulation system is placed inside the test chamber to simulate various climatic environments for performance testing of the ultrasonic sensor under test;

[0008] The performance testing system is used to monitor the test signals during the testing of the ultrasonic sensor under test and to perform performance analysis.

[0009] Optionally, the test chamber adopts a double-layer insulation structure.

[0010] Optionally, the outer layer of the double-layer insulation structure is made of stainless steel, and the inner layer is filled with polyurethane foam.

[0011] Optionally, the test chamber is equipped with a door, which has a sealing device and an observation window, and the middle layer of the door is filled with dry nitrogen.

[0012] Optionally, a baffle plate is installed on the inner wall of the test chamber to optimize the temperature and humidity circulation path and ensure the uniformity of environmental parameters inside the chamber.

[0013] Optionally, the environmental simulation system includes a temperature and humidity control module, a light simulation module, and an air pressure regulation module, wherein...

[0014] The temperature and humidity control module is achieved by installing heating wires, cooling plates, humidifiers and dehumidifiers inside the test chamber. Temperature and humidity sensors collect temperature and humidity data inside the test chamber in real time and transmit the data to the control system. The control system automatically adjusts the working status of the heating wires, cooling plates, humidifiers and dehumidifiers according to the preset temperature and humidity parameters to achieve precise control of temperature and humidity and simulate different climatic environments.

[0015] The illumination simulation module can simulate ultraviolet radiation environments of different intensities by setting an ultraviolet LED array at the top of the test chamber;

[0016] The air pressure regulation module, equipped with a miniature vacuum pump and a precision pressure sensor, enables precise control of the air pressure inside the test chamber, simulating different altitude environments.

[0017] Optionally, the sensor support adopts a modular design, including a base, a column, and a mounting bracket, wherein...

[0018] The base is fixed to the bottom of the test chamber, the column is vertically installed on the base, the mounting seat is installed on the upper end of the column, and a steel test block is mounted on the mounting seat. Acoustic emission transducers and at least one ultrasonic sensor under test can be installed on both sides of the steel test block.

[0019] Optionally, the steel test block is made of hot-rolled steel A36, and the acoustic emission transducer is a broadband piezoelectric ceramic transducer, which is tightly connected to the surface of the steel test block by a coupling agent.

[0020] Optionally, the performance monitoring system integrates a signal processing and analysis module, which injects an excitation signal into the acoustic emission transducer through the acoustic emission system, collects test signals from the standard sensor and the tested ultrasonic sensor using a standard measurement system, stores the collected data in real time, and analyzes and processes the data through software to generate performance change curves and reports. The standard sensor and the tested ultrasonic sensor are set in the same location.

[0021] Optionally, the transformer ultrasonic sensor weathering resistance testing system also includes a lead wire hole structure, formed in the wall of the test chamber, for connecting the ultrasonic sensor under test to an external performance testing system.

[0022] The lead hole uses an aviation plug or waterproof connector, and is surrounded by a protective cover or sleeve.

[0023] According to another aspect of this application, a method for weathering resistance testing of a transformer ultrasonic sensor is provided, comprising:

[0024] The ultrasonic sensor under test and the standard sensor are symmetrically mounted on the mounting base of the sensor support.

[0025] Different climate environment parameters are set in the control system to simulate different climate environments;

[0026] In different climatic environments, the acoustic emission system is activated to inject a standard excitation signal into the acoustic emission transducer, and the output response signals of the test ultrasonic sensor and the standard sensor after receiving the standard excitation signal are monitored in real time.

[0027] By analyzing and comparing the output response signals of the tested ultrasonic sensor and the standard sensor under different climatic conditions, the weather resistance performance of the tested ultrasonic sensor under different climatic conditions can be obtained.

[0028] Therefore, this invention proposes a weathering test system for verifying the performance of ultrasonic sensors. It simulates various complex climatic environments through an environmental simulation system and monitors the performance of the ultrasonic sensor under test on the sensor support through a performance monitoring system. The integrated high-performance monitoring system monitors various performance indicators of the sensor in real time and comprehensively during the aging process, providing accurate data for evaluating the weathering performance of the sensor.

[0029] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this application in conjunction with the accompanying drawings. Attached Figure Description

[0030] The following sections will describe some specific embodiments of this application in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 This is a structural diagram of a transformer ultrasonic sensor weathering resistance testing system according to an embodiment of this application;

[0032] Figure 2 This is a schematic flowchart of a weathering resistance test method for a transformer ultrasonic sensor according to another embodiment of this application. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Figure 1 This is a structural diagram of a transformer ultrasonic sensor weathering resistance testing system according to an embodiment of this application. (Reference) Figure 1 As shown, the transformer ultrasonic sensor weathering resistance testing system includes: a test chamber, an environmental simulation system, sensor support components, and a performance monitoring system.

[0038] The sensor support is installed inside the test chamber and is used to install the ultrasonic sensor under test;

[0039] The environmental simulation system is placed inside the test chamber to simulate various climatic environments for performance testing of the ultrasonic sensor under test;

[0040] The performance testing system is used to monitor the test signals during the testing of the ultrasonic sensor under test and to perform performance analysis.

[0041] Specifically, addressing the problems existing in the background technology, this invention aims to provide a weathering resistance testing system for transformer ultrasonic sensors. This system can simulate various complex climatic environments, achieving wide-range and high-precision control of temperature and humidity. It features a customized sensor support system capable of supporting multiple sensors under test, mounting rigid test blocks, and acoustic emission transducers. Through the rational design of the lead-in holes and their sealing structure, performance testing can be performed without removing the sensor, ensuring the stability of the test environment and the safety of the sensor. An integrated high-performance monitoring system monitors various performance indicators of the sensor in real time and comprehensively, providing accurate data for evaluating the sensor's weathering resistance. This invention designs a weathering resistance testing system for ultrasonic sensor performance verification, comprising a test chamber, an environmental simulation system, sensor support components, lead-in hole structure, and a performance monitoring system.

[0042] Specifically, the test chamber adopts a double-layer insulation structure. The outer layer can be made of stainless steel to enhance the strength and corrosion resistance of the chamber; the inner layer can be filled with polyurethane foam to effectively reduce heat exchange. The chamber door is equipped with sealing devices (sealing rings, etc.) and an observation window for convenient observation of the test conditions inside the chamber without disturbing the internal environment. The middle layer is filled with dry nitrogen to prevent fogging from affecting observation. The inner wall of the chamber is equipped with baffles to optimize the temperature and humidity circulation path and ensure the uniformity of environmental parameters inside the chamber.

[0043] Specifically, the environmental simulation system includes a temperature and humidity control module, a light simulation module, and an air pressure regulation module.

[0044] Furthermore, the temperature and humidity control module utilizes heating elements, cooling coils, a humidifier, and a dehumidifier installed within the enclosure. Temperature and humidity sensors collect real-time data from the enclosure and transmit it to the control system. Based on preset temperature and humidity parameters, the control system automatically adjusts the operating states of the heating elements, cooling coils, humidifier, and dehumidifier, achieving precise temperature control within a range of -40℃ to 120℃ and humidity within a range of 10% to 98% RH, simulating different climatic environments. The light simulation module uses an ultraviolet LED array on the top of the enclosure to simulate ultraviolet radiation environments of varying intensities, ranging from 0-100 W / m². 2 Adjustable, wavelength range 280-400nm. The air pressure regulation module, equipped with a miniature vacuum pump and a precision pressure sensor, can achieve precise control of the air pressure inside the chamber within the range of 80kPa-120kPa, simulating different altitude environments.

[0045] Specifically, the sensor support adopts a modular design, consisting of a base, a column, and a mounting base. The base is fixed to the bottom of the test chamber, the column is vertically mounted on the base, and a steel test block is placed on the mounting base. Acoustic emission transducers and the sensor under test can be installed on both sides of the steel test block.

[0046] Furthermore, the standard steel test block is made of hot-rolled steel A36. The acoustic emission transducer is a broadband piezoelectric ceramic transducer with a frequency response range covering 20kHz-200kHz. It is tightly connected to the surface of the steel test block through a coupling agent to ensure effective transmission of acoustic signals.

[0047] Furthermore, the sensor support can simultaneously accommodate multiple sets of sensors for performance testing.

[0048] Specifically, the lead-in hole structure is as follows: lead-in holes are strategically placed on the enclosure wall for connecting the sensor to external testing equipment. The lead-in holes utilize sealed connectors such as aviation plugs or waterproof joints to ensure smooth signal and power delivery from the sensor while preventing damage to the internal temperature and humidity environment. Protective covers or sleeves are installed around the lead-in holes to prevent moisture, dust, and other impurities from entering the enclosure.

[0049] Specifically, the performance monitoring system integrates a high-precision signal processing and analysis module. It injects excitation signals into the acoustic emission transducer via an acoustic emission system, collects test signals from standard sensors and the tested sensor using a standard measurement system, stores the collected data in real time, and analyzes and processes the data using software to generate performance change curves and reports. It also supports remote data transmission, allowing test personnel to view and analyze the data remotely.

[0050] The transformer ultrasonic sensor weathering resistance testing system proposed in this invention was used to conduct temperature, humidity, light, and high-altitude weathering resistance tests on a batch of ultrasonic sensors. The specific steps are as follows:

[0051] (1) Pre-test preparation: Five ultrasonic sensors of the same type were selected as test samples. Before the test, all sensors were visually inspected to ensure that there was no mechanical damage. Initial performance parameters, including sensitivity, frequency response, dynamic range, and linearity, were recorded under standard environmental conditions (temperature 25℃, humidity 50%RH, air pressure 101kPa). A comprehensive inspection of the weathering resistance test system was conducted to confirm that the double-layer heat insulation structure of the test chamber was intact, the door sealing device was free from aging and deformation, the connections of each module of the environmental simulation system were stable, and the temperature and humidity sensors and other detection elements were calibrated as qualified. The modular components of the sensor support were undamaged, the surface of the steel test block was smooth and clean, and there was no rust or defects. The lead hole sealing joints and protective covers were in good condition. All instruments and equipment of the performance monitoring system were operating normally and the software functions were complete.

[0052] (2) Sensor placement: such as Figure 1As shown, five identical ultrasonic sensors were fixed on the support platform, ensuring good acoustic coupling between the sensors and the steel test block surface. The signal and power cables of each sensor were sealed and led out through aviation plugs in the lead-in holes, and accurately connected to the external performance monitoring system. The plug connections were then reinforced with sealant to prevent moisture ingress. After connection, the system underwent pre-operation testing.

[0053] (3) Setting Environmental Parameters: The test environment parameters were set through the system control system to simulate complex and variable climatic conditions. For temperature, the temperature was lowered from 25℃ to -40℃ at a rate of 2℃ / min and held for 24 hours to simulate a winter environment in a frigid region; then, the temperature was raised to 120℃ at the same rate and held for 24 hours to simulate an extreme summer environment in a high-temperature region, and this cycle was repeated three times. Humidity was set to 10%RH (dry environment), 50%RH (normal environment), and 98%RH (high humidity environment) at each temperature stage, and each humidity value was held for 12 hours to simulate different humidity scenarios. The light simulation module ran continuously throughout the test, setting the ultraviolet radiation intensity to 80W / m² through the ultraviolet LED array on the top of the chamber. 2 The wavelength range was controlled between 280-400nm to simulate a prolonged outdoor ultraviolet radiation environment. The air pressure regulation module gradually reduced the air pressure inside the chamber from 101kPa to 80kPa at the beginning of the test to simulate a low-pressure environment at high altitudes, and maintained stability during subsequent tests.

[0054] (4) Performance monitoring: Excitation signals of different intensities are injected into the ultrasonic transducer through the acoustic emission system, and the output signal of the sample sensor is collected through the standard measurement system. The response data of the sensor is recorded in real time, and parameters such as amplitude attenuation, frequency drift and waveform distortion of the response signal are analyzed.

[0055] (5) Data analysis and evaluation: After the test, compare the response characteristics of the sensor before and after the test, and evaluate the stability and reliability of the ultrasonic sensor in extreme environments such as high temperature, high humidity, strong light, and high altitude.

[0056] Compared with the prior art, the present invention has the following significant effects:

[0057] (1) Accurate environmental simulation: Through high-precision control of temperature and humidity, the complex climate environment is simulated to be closer to the actual application scenario, making the test results more reliable and valuable for reference.

[0058] (2) High versatility: The adjustable sensor support can adapt to ultrasonic sensors of different specifications and shapes, expanding the applicability of the system;

[0059] (3) Convenient and accurate testing: The sealed design of the lead hole enables performance testing without removing the sensor, ensuring the continuity and stability of the test environment, while avoiding damage to the sensor caused by frequent disassembly, and improving the accuracy of the test results.

[0060] (4) Comprehensive and efficient monitoring: The performance monitoring system can monitor the various performance indicators of the sensor in real time and comprehensively during the aging process, providing rich and accurate data support for evaluating the weather resistance performance of the sensor, and improving the efficiency of the test and the scientific nature of the data analysis.

[0061] also, Figure 2 This is a flowchart illustrating a weathering resistance test method for a transformer ultrasonic sensor according to another aspect of an embodiment of this application. (Refer to...) Figure 2 As shown, the weathering resistance test method 200 for transformer ultrasonic sensors includes:

[0062] Step 201: The ultrasonic sensor to be tested and the standard sensor are symmetrically mounted on the mounting base of the sensor support;

[0063] Step 202: Set different climate environment parameters in the control system to simulate different climate environments;

[0064] Step 203: In different climatic environments, start the acoustic emission system to inject a standard excitation signal into the acoustic emission transducer, and monitor the output response signal of the test ultrasonic sensor and the standard sensor after receiving the standard excitation signal in real time;

[0065] Step 204: Analyze and compare the output response signals of the tested ultrasonic sensor and the standard sensor under different climatic conditions to obtain the weather resistance performance of the tested ultrasonic sensor under different climatic conditions.

[0066] Specifically, the specific steps of the transformer ultrasonic sensor weathering resistance test method implemented by the transformer ultrasonic sensor weathering resistance test system of the present invention are as follows:

[0067] Step 1: Experiment Preparation

[0068] 1. The ultrasonic sensor to be tested and the standard sensor are symmetrically mounted on the mounting base of the sensor support, and the sensor is brought into close contact with the steel test block by using a coupling agent;

[0069] 2. Check the lead wire connectors to ensure that the signal wires and power wires are correctly connected, and use sealing devices to prevent damage to the temperature and humidity environment inside the box;

[0070] 3. Confirm that the performance monitoring system and sensors are connected normally.

[0071] Step 2: Environment Configuration

[0072] 1. Set parameters such as temperature, humidity, air pressure, and light intensity in the control system according to the experimental requirements;

[0073] 2. Start the environment simulation system;

[0074] 3. Adjust the temperature and humidity inside the chamber to the target range using the temperature and humidity control module;

[0075] 4. Turn on the ultraviolet LED array through the light simulation module and set the radiation intensity and wavelength;

[0076] 5. Adjust the air pressure inside the chamber using the air pressure regulating module;

[0077] 6. The environment inside the chamber is monitored in real time using temperature, humidity, and pressure sensors to ensure stable parameters.

[0078] Step 3: Performance Testing

[0079] 1. Start the acoustic emission system and inject a standard excitation signal into the acoustic emission transducer.

[0080] 2. The standard sensor and the test sensor simultaneously receive and output response signals.

[0081] 3. The performance monitoring system collects the output signals of the two types of sensors and performs comparative analysis.

[0082] Step 4: Data Acquisition and Processing

[0083] 1. Analyze the real-time acquired data through the software system and compare the signal amplitude, frequency response, signal-to-noise ratio and other parameters of the standard sensor and the test sensor;

[0084] 2. By analyzing and comparing the performance change curves, the performance differences of the tested sensors under different environmental conditions are evaluated.

[0085] Step 5: Cyclic and Multi-Condition Experiments

[0086] 1. Change the set parameters such as temperature, humidity, light, and air pressure, and repeat steps three and four.

[0087] 2. It can conduct sensor performance tests under single-factor or multi-factor coupling conditions to generate complete weather resistance test data.

[0088] Step Six: Experiment Conclusion and Data Analysis

[0089] 1. After the experiment is completed, shut down the environmental simulation system and restore the environment to normal temperature and pressure.

[0090] 2. Remove the sensor and check its appearance and wiring integrity.

[0091] 3. Analyze the test reports to evaluate the performance changes of the sensors under different weathering environments, providing a basis for reliability and lifespan studies.

[0092] Thus, this invention achieves precise control of climatic environments such as temperature and humidity through the double-layer insulated test chamber structure and environmental simulation system of the test system; it adapts to the installation requirements of sensors of different specifications by means of adjustable modular sensor support components; it achieves the effect of performance testing without removing the sensor by means of lead hole design with sealed joint and protective structure; and it monitors multiple performance indicators of the sensor in real time by combining a performance monitoring system with integrated high-precision signal acquisition and data analysis functions.

[0093] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0094] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0095] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0096] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A weathering resistance testing system for an ultrasonic sensor of a transformer, characterized in that, include: The test chamber, environmental simulation system, sensor support components, and performance monitoring system are included. The sensor support is installed inside the test chamber and is used to install the ultrasonic sensor under test. The environmental simulation system is placed inside the test chamber and is used to simulate various climatic environments for performance testing of the ultrasonic sensor under test. The performance testing system is used to monitor the test signals during the test of the ultrasonic sensor under test and to perform performance analysis.

2. The transformer ultrasonic sensor weathering resistance testing system according to claim 1, characterized in that, The test chamber adopts a double-layer heat insulation structure.

3. The transformer ultrasonic sensor weathering resistance testing system according to claim 2, characterized in that, The outer layer of the double-layer insulation structure is made of stainless steel, and the inner layer is filled with polyurethane foam.

4. The weathering resistance testing system for transformer ultrasonic sensors according to claim 1, characterized in that, The test chamber is equipped with a door, which has a sealing device and an observation window, and the middle layer of the door is filled with dry nitrogen gas.

5. The transformer ultrasonic sensor weathering resistance testing system according to claim 1, characterized in that, The inner wall of the test chamber is equipped with a baffle plate to optimize the temperature and humidity circulation path and ensure the uniformity of environmental parameters inside the chamber.

6. The weathering resistance testing system for transformer ultrasonic sensors according to claim 1, characterized in that, The environmental simulation system includes a temperature and humidity control module, a light simulation module, and an air pressure regulation module, wherein... The temperature and humidity control module is implemented by installing heating wires, cooling plates, humidifiers and dehumidifiers inside the test chamber. The temperature and humidity sensor collects the temperature and humidity data inside the test chamber in real time and transmits the data to the control system. The control system automatically adjusts the working status of the heating wires, cooling plates, humidifiers and dehumidifiers according to the preset temperature and humidity parameters to achieve precise control of temperature and humidity and simulate different climatic environments. The light simulation module can simulate ultraviolet radiation environments of different intensities by setting an ultraviolet LED array at the top of the test chamber; The air pressure regulation module, equipped with a miniature vacuum pump and a precision pressure sensor, enables precise control of the air pressure inside the test chamber, simulating different altitude environments.

7. The weathering resistance testing system for transformer ultrasonic sensors according to claim 1, characterized in that, The sensor support adopts a modular design, including a base, a column, and a mounting bracket. The base is fixed to the bottom of the test chamber, the column is vertically installed on the base, the mounting seat is installed on the upper end of the column, and a steel test block is disposed on the mounting seat. Acoustic emission transducers and at least one of the tested ultrasonic sensors can be installed on both sides of the steel test block.

8. The weathering resistance testing system for transformer ultrasonic sensors according to claim 7, characterized in that, The steel test block is made of hot-rolled steel A36, and the acoustic emission transducer is a broadband piezoelectric ceramic transducer, which is tightly connected to the surface of the steel test block through a coupling agent.

9. The weathering resistance testing system for transformer ultrasonic sensors according to claim 7, characterized in that, The performance monitoring system integrates a signal processing and analysis module. It injects an excitation signal into the acoustic emission transducer through an acoustic emission system, collects test signals from a standard sensor and the test ultrasonic sensor using a standard measurement system, stores the collected data in real time, and analyzes and processes the data through software to generate performance change curves and reports. The standard sensor and the test ultrasonic sensor are set in the same location.

10. The weathering resistance testing system for transformer ultrasonic sensors according to claim 1, characterized in that, It also includes a lead wire hole structure, formed in the wall of the test chamber for connecting the tested ultrasonic sensor to an external performance testing system, wherein... The lead hole uses an aviation plug or a waterproof connector, and is surrounded by a protective cover or protective sleeve.

11. A method for testing the weathering resistance of a transformer ultrasonic sensor using the transformer ultrasonic sensor weathering resistance testing system according to any one of claims 1-10, characterized in that, include: The ultrasonic sensor under test and the standard sensor are symmetrically mounted on the mounting base of the sensor support. Different climate environment parameters are set in the control system to simulate different climate environments; In different climatic environments, the acoustic emission system is activated to inject a standard excitation signal into the acoustic emission transducer, and the test ultrasonic sensor and the output response signal of the standard sensor after receiving the standard excitation signal are monitored in real time. By analyzing and comparing the output response signals of the tested ultrasonic sensor and the standard sensor under different climatic conditions, the weather resistance performance of the tested ultrasonic sensor under different climatic conditions is obtained.

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