Oil-immersed transformer on-line monitoring sensing device with positioning structure

Abstract

The embodiment of the utility model provides an oil-immersed transformer on-line monitoring sensing device with a positioning structure, which comprises a positioning frame used for providing support, a damping layer is arranged at the bottom of the positioning frame, an anti-skid structure is arranged on the damping layer, the positioning frame is provided with a multi-point locking mechanism, the anti-skid structure comprises cross grains, and the cross grains are arranged on the damping layer. The multi-point locking mechanism realizes multi-position reinforcement through bolts; the monitoring probe is used for collecting parameter changes in the oil-immersed transformer in real time; the fixed arm is used for connecting the positioning frame and the monitoring probe and is provided with a flexible buffer unit for absorbing lateral impact force; the waterproof shell wraps the monitoring probe; wherein a fine tuning slide rail is arranged at the end part of the fixed arm, an electric push rod is mounted in the fine tuning slide rail, and the monitoring probe can be driven to move through the electric push rod; the monitoring probe is installed on the fixed arm through a damping rotating shaft, and an angle adjusting knob is arranged at one end of the damping rotating shaft. Through the scheme of the embodiment of the invention, the stability in a vibration environment can be enhanced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electrical equipment monitoring, in particular to an oil-immersed transformer online monitoring sensor device with a positioning structure. BACKGROUND

[0002] The oil-immersed transformer online monitoring sensor device with a positioning structure is a device specially used for real-time monitoring of the running state of an oil-immersed transformer. The device collects key parameters of the transformer such as temperature, humidity, partial discharge and oil quality through a sensor, and transmits the data to a control system for analysis, thereby providing effective diagnostic basis for operation and maintenance personnel, so as to ensure the safe operation and reliability of the transformer. However, in actual application, the device is easily disturbed in a vibrating environment, and the existing design of the positioning structure makes it unable to effectively cope with the continuous vibration from the outside or its own operation, which may affect the accuracy and stability of the monitoring data, and further cause potential safety hazards. SUMMARY

[0003] Therefore, the oil-immersed transformer online monitoring sensor device with a positioning structure is provided, which at least partially solves the problems in the prior art.

[0004] The oil-immersed transformer online monitoring sensor device with a positioning structure comprises:

[0005] A positioning frame is used to provide support, the bottom of the positioning frame is provided with a shock-absorbing layer, the shock-absorbing layer is provided with an anti-skid structure, and the positioning frame is provided with a multi-point locking mechanism, wherein the anti-skid structure comprises intersecting lines, and the multi-point locking mechanism is reinforced at multiple places by bolts;

[0006] A monitoring probe is used to collect parameter changes in the oil-immersed transformer in real time;

[0007] A fixed arm is used to connect the positioning frame and the monitoring probe, and is provided with a flexible buffer unit to absorb lateral impact force;

[0008] A waterproof shell is used to wrap the monitoring probe; wherein

[0009] The end of the fixed arm is provided with a fine adjustment sliding rail, an electric push rod is installed in the fine adjustment sliding rail, and the monitoring probe can be moved by the electric push rod;

[0010] The monitoring probe is installed on the fixed arm through a damping shaft and is provided with an angle adjusting knob at one end of the damping shaft.

[0011] In one specific embodiment, the flexible buffer unit is a spiral spring.

[0012] In one specific embodiment, the positioning frame is further provided with a support foot pad.

[0013] In one embodiment, the damping layer is fixed to the positioning frame by screws and is provided with an elastic sealing pad at the contact surface.

[0014] In one embodiment, a vibration compensation module is arranged on the monitoring probe.

[0015] In one embodiment, a damping member is mounted at the end of the fixed arm.

[0016] In one embodiment, a reinforcing rib plate is arranged in the middle of the fixed arm.

[0017] In one embodiment, an anti-corrosion coating is arranged on the outer layer of the waterproof shell.

[0018] In one embodiment, a heat dissipation fan assembly is integrated inside the waterproof shell.

[0019] In one embodiment, a waterproof plug-in interface is arranged at the wiring part of the waterproof shell.

[0020] The oil-immersed transformer online monitoring sensor device with a positioning structure provided by the embodiments of the present disclosure comprises a positioning frame for providing support, a damping layer is arranged at the bottom of the positioning frame, an anti-slip structure is arranged on the damping layer, and the positioning frame is provided with a multi-point locking mechanism, wherein the anti-slip structure comprises intersecting lines, and the multi-point locking mechanism is reinforced at multiple positions by bolts; a monitoring probe for real-time acquisition of parameter changes in the oil-immersed transformer; a fixed arm for connecting the positioning frame and the monitoring probe and provided with a flexible buffer unit for absorbing lateral impact force; a waterproof shell for wrapping the monitoring probe; wherein the end of the fixed arm is provided with a fine adjustment sliding rail, an electric push rod is mounted in the fine adjustment sliding rail, and the monitoring probe can be moved by the electric push rod; and the monitoring probe is installed on the fixed arm by a damping shaft and is provided with an angle adjustment knob at one end of the damping shaft. The scheme of the embodiments of the present disclosure can enhance the stability in a vibrating environment. BRIEF DESCRIPTION OF DRAWINGS

[0021] In the drawings, like reference numerals designate like elements or components throughout the several views, unless otherwise specified. The drawings are not necessarily to scale, the emphasis instead being placed upon illustrating the principles of the application. It should be understood that the drawings are merely depictions of some embodiments of the application and should not be construed as limiting the scope of the application.

[0022] Figure 1 is a structural schematic view of the oil-immersed transformer online monitoring sensor device with a positioning structure according to the present application;

[0023] Figure 2 is a bottom view of the positioning frame in the oil-immersed transformer online monitoring sensor device with a positioning structure according to the present application.

[0024] Figure 3 is the online monitoring sensor device of oil-immersed transformer with positioning structure in the utility model Figure 2 the enlarged view of A in the middle;

[0025] Figure 4 is the structural diagram of monitoring probe in the online monitoring sensor device of oil-immersed transformer with positioning structure in the utility model.

[0026] In the figure: 1, positioning frame;11, shock-absorbing layer;12, anti-skid structure;13, locking mechanism;14, supporting foot pad;15, screw;16, elastic sealing pad;2, monitoring probe;21, knob;22, vibration compensation module;3, fixed arm;31, fine adjustment sliding rail;32, damping shock-absorbing piece;33, reinforcing rib plate;34, electric push rod;4, waterproof housing;41, anticorrosion coating;42, cooling fan assembly;43, waterproof plug-in interface DETAILED DESCRIPTION

[0027] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0028] As Figure 1 shown, the online monitoring sensor device of oil-immersed transformer with positioning structure of the application includes positioning frame 1, monitoring probe 2, fixed arm 3 and waterproof housing 4 and other main parts. The following will specifically describe each component and its structure and function.

[0029] Positioning frame 1 is the basic component of the monitoring device, which is mainly used to provide stable support. The bottom of the positioning frame 1 is provided with a shock-absorbing layer 11 made of elastic rubber material, which can effectively attenuate high-frequency vibration through its excellent physical properties, ensuring stable placement in a vibrating environment. In order to prevent the positioning frame 1 from moving or sliding, an anti-skid structure 12 is arranged above the shock-absorbing layer 11. This structure contains a cross-pattern design that can significantly increase the friction between the contact surface, further improving the position stability. In addition, the positioning frame 1 is also provided with a specially designed multi-point locking mechanism 13 to ensure that the entire monitoring device is more firmly and reliably placed in the predetermined position. The multi-point locking mechanism 13 is reinforced from multiple points by using bolt connection in multiple places, effectively avoiding loosening caused by vibration or other external factors.

[0030] The monitoring probe 2 is responsible for real-time data collection. As a key sensor device directly acting on the internal part of the oil-immersed transformer, the monitoring probe 2 is used to dynamically track and collect data on the working parameters inside the transformer. Its accuracy directly affects the effectiveness and reliability of the final detection results, so the probe must be able to operate normally under various extreme working conditions. It not only needs to have excellent sensitivity and accuracy, but also should be able to withstand the influence of high temperature, high pressure, electromagnetic interference and other adverse factors. Through the built-in high-performance chip set and the use of anti-noise filtering algorithm and other technical means to meet the above requirements.

[0031] The fixed arm 3 plays an important role in linking and keeping the monitoring probe 2 stable. On the one hand, it is firmly welded or bolted to the positioning frame 1 and extends a certain distance along the horizontal direction to accommodate and maintain the probe; on the other hand, it is installed with a set of flexible buffer unit. This unit is mainly composed of a spiral spring to absorb the impact force in the transverse direction and ensure that the probe can maintain the accurate measurement position even if it is slightly bumped. Such a design concept helps to ensure that the monitoring probe 2 always maintains the best operating state throughout the service period.

[0032] The last component is the waterproof shell 4 of the protection level. This component surrounds the connection section of the monitoring probe 2 and its lead, forming a comprehensive protective barrier. The waterproof level conforms to the international IP68 standard, which means that it can remain intact even in harsh weather conditions such as long-term water accumulation or water spray environment. Its shell structure is generally made of high-strength alloy material, which takes into account durability and sealing, and achieves high-level electrical safety while providing convenient conditions for user maintenance.

[0033] In one embodiment, further referring to Figure 2 and Figure 3 , the positioning frame 1 of the oil-immersed transformer online monitoring sensor device with positioning structure of the present application introduces support foot pads 14 on the basis of the original anti-slip structure 12 at the bottom. This improvement aims to further optimize the uniformity of the bottom support points, ensuring that the pressure is more reasonably distributed on the entire bottom surface, avoiding problems caused by uneven local stress. As a new component, the support foot pad 14 not only enhances the overall stability of the device, but also to some extent, reduces the pressure on the shock-absorbing layer 11.

[0034] Specifically, the positioning frame 1 of the device is designed as a complex multi-level structure, with a shock-absorbing layer 11 at the bottom and an anti-skid structure 12 thereon. In order to realize the function of the support foot pads 14, these components are cooperatively configured: the support foot pads 14 are directly located at the bottom end of the positioning frame 1 and are firmly attached below the shock-absorbing layer 11 by physical tight fitting or adhesion. Due to such installation method, the support foot pads 14 closely cooperate with the anti-skid structure 12, significantly improving the support performance without affecting the anti-skid effect. In addition, multiple support foot pads 14 can be distributed at different positions according to actual needs to meet the mechanical requirements under different working conditions.

[0035] For example, in actual technical implementation, each support foot pad 14 is made of a material with high strength and certain flexibility, and the size and distribution interval are determined in advance according to the specific use environment, and then it is precisely assembled to the corresponding position to ensure the load-bearing capacity and buffering capacity of each part. This structural adjustment effectively enhances the stability and long-term reliability of the entire sensor device foundation platform.

[0036] In one embodiment, with specific reference to Figure 3 In one embodiment, the shock-absorbing layer 11 of the online monitoring sensor device for oil-immersed transformers with a positioning structure is fixedly connected with the positioning frame 1 by screws 15. In the specific implementation process, the shock-absorbing layer 11 is installed at the bottom of the positioning frame 1 and in contact therewith. This structure not only helps to attenuate high-frequency vibrations caused by the operation of the oil-immersed transformer, thereby reducing the impact on the sensor, but also ensures the firmness of the overall assembly and ensures position stability even after long-term use.

[0037] In order to improve assembly precision and sealing performance, an elastic sealing gasket 16 is provided at the contact interface of the two components. This gasket can be moderately compressed when the screws 15 are tightened, thereby forming a good sealing effect and continuously maintaining the shock-absorbing function. This structural design effectively avoids leakage and the resulting problems that may occur due to changes in the working environment or equipment aging, while maintaining the stability of the sensor operation. The presence of the sealing gasket also enhances the additional buffering protection provided beyond the material properties of the shock-absorbing layer 11.

[0038] For example, in actual operation, a sealing gasket with certain hardness and good rebound characteristics can be selected to match different types and specifications of transformers. Before assembling the components in order, the pre-cut elastic sealing gasket 16 of appropriate shape and size is placed at the interface between the positioning frame 1 and the shock-absorbing layer 11, and then a number of standard-sized screws 15 are used to penetrate the two components, and a moderate torque is applied to make the layers fit tightly, in this way, the technical solution of the foregoing features is achieved.

[0039] In one embodiment, as Figure 4As shown, the monitoring probe 2 of the online monitoring sensor device for oil-immersed transformers with positioning structure according to the present application is installed on the fixed arm 3 through a damping shaft. The use of the damping shaft not only enables stable fixation of the monitoring probe 2, but also provides appropriate damping effect when the monitoring angle needs to be adjusted. In order to adapt the monitoring device to different positions, one end of the damping shaft is equipped with an angle adjustment knob 21. This knob 21 allows the user to finely adjust the angle of the monitoring probe 2, ensuring that the monitoring direction accurately covers the target area.

[0040] The design greatly improves the application flexibility and adaptability of the monitoring equipment by introducing the damping shaft and the angle adjustment knob 21, and is suitable for different application scenarios of various oil-immersed transformers. Specifically, due to the use of a flexible installation scheme, both horizontal deviations and vertical height differences can be compensated through simple operations to ensure optimal monitoring effect. In addition, the design ensures that the probe can be continuously and steplessly adjusted within the range of 0° to 45°, showing stronger applicability when facing complex requirements in different installation environments, which helps to achieve more comprehensive data acquisition and state monitoring.

[0041] For example, in a specific embodiment, the monitoring probe 2 is installed on the fixed arm 3 at the end close to the transformer body through a damping shaft. The fixed arm 3 extends horizontally from one side of the positioning rack 1, providing a support point for the monitoring probe 2, and the flexible buffer unit on it further enhances the overall structural stability. The user can use the attached angle adjustment knob 21 to precisely control the direction of the monitoring probe 2 installed on the damping shaft. When adjusting, the user only needs to loosen the adjustment knob 21 to change the azimuth angle of the probe fixed by the damping shaft; and when the angle is determined, tightening the knob 21 will lock the new angle setting, ensuring that the posture remains stable and is not deformed and displaced during the monitoring process, thereby ensuring that high-quality and high-precision data acquisition work can be smoothly carried out.

[0042] In one embodiment, the monitoring probe 2 of the online monitoring sensor device for oil-immersed transformers with positioning structure according to the present application is provided with a vibration compensation module 22. This module is installed on the monitoring probe 2 and can sense and process the interference of external vibration on the monitoring data and adjust the output signal accordingly. The introduction of the vibration compensation module 22 enables the device to maintain the consistency and stability of data acquisition in harsh working environments, especially in industrial application scenarios where there are obvious mechanical vibrations or other disturbance factors, which is crucial for ensuring the accuracy of real-time monitoring data.

[0043] Specifically, in one embodiment, the vibration compensation module 22 is internally integrated with an acceleration sensor and a microprocessor. The integrated acceleration sensor continuously monitors the vibration information from the outside world and transmits these information to the microprocessor for processing. The microprocessor performs corresponding algorithmic operations according to the received vibration intensity and frequency characteristics, dynamically adjusts the raw data obtained by the monitoring probe 2. For example, through means such as sampling frequency and gain adjustment, the data fluctuation effect caused by vibration is eliminated or significantly reduced, so as to improve the authenticity and reliability of the overall measurement results. In this way, no matter how complex and changeable the external environment is, the device can provide accurate and stable monitoring signals, thereby supporting more efficient and reliable safety operation and maintenance activities.

[0044] In one embodiment, with specific reference to Figure 4 , the fixing arm 3 of the oil-immersed transformer online monitoring sensor device with positioning structure of the present application is configured with a fine adjustment slide rail 31. The fine adjustment slide rail 31 is internally installed with an electric push rod 34. The electric push rod 34 can drive the monitoring probe 2 fixed on it to make fine movement in the horizontal plane through control signals. This allows users to accurately position the target monitoring position according to specific needs, meeting the demand for high-precision measurement. By adjusting the extension state of the electric push rod 34, different position changes in different directions and amplitudes are achieved, ensuring that the monitoring probe 2 can accurately reach the expected target area during each measurement to obtain more accurate data. The fine adjustment slide rail 31 is located at one end of the fixing arm 3 and is connected with the external control system. The fine adjustment slide rail 31 drives the monitoring probe 2 to make fine adjustment in the transverse direction through the action of the electric push rod 34, thereby ensuring the effectiveness and reliability of the monitoring activity. At the same time, such design also improves the application range of the equipment, which can maintain excellent performance in various complex environments and adapt to diversified use scene requirements.

[0045] For example, a group of small motors that can receive external instructions and drive the electric push rod 34 to make precise displacement can be integrated at the end of the fixing arm 3. In addition, it is necessary to ensure that the fine adjustment slide rail 31 has sufficient strength and flexibility to withstand the influence from the external environment and the reaction force generated when the electric push rod 34 operates, and always maintains smooth and smooth during the entire movement process, avoiding any obstacles or vibrations that may affect the positioning accuracy of the monitoring probe 2, thereby ensuring the consistency and repeatability of the results under each operation.

[0046] In one embodiment, referring back to Figure 1The fixed arm 3 of the online monitoring sensor device for oil-immersed transformers with positioning structure of the present application is provided at the end with a damping and shock-absorbing element 32. The main purpose of this design is to effectively absorb the vibrations transmitted from the fixed arm 3, so as to improve the overall stability and working accuracy of the system. By placing the damping and shock-absorbing element 32 at the end of the fixed arm 3, the influence of external vibrations on the monitoring sensor device can be minimized, avoiding data measurement errors and equipment damage caused by these external factors. The fixed arm 3 is one of the key components connected to the positioning frame 1 and extending to both sides, playing a core role in ensuring the accuracy and stability of the position of the monitoring probe 2. Under normal operating conditions, when vibrations exist inside the oil-immersed transformer, the vibrations will be conducted along the fixed arm 3 to the damping and shock-absorbing element 32, which will be buffered after special internal structure processing.

[0047] Specifically, the damping and shock-absorbing element 32 is made of materials with good damping performance and durability, such as polyurethane or rubber composite materials, which have appropriate softness but still have the necessary support. Its structure is usually hollow or has a grid-like internal filling structure, which can effectively increase the friction between the contact surfaces and the recovery ability after compression, while the two ends are firmly connected to the fixed arm 3 through special threaded joints, ensuring that the shock-absorbing effect can still be stable in complex environments.

[0048] In one embodiment, the fixed arm 3 of the online monitoring sensor device for oil-immersed transformers with positioning structure of the present application is provided with a reinforcing rib plate 33 in the middle, which is located at the center of the fixed arm 3. The reinforcing rib plate 33 is distributed longitudinally along the fixed arm 3 and is firmly connected with the main material of the fixed arm 3, forming an integral structure, thereby effectively enhancing the stiffness and anti-twist performance of the fixed arm 3. This allows the fixed arm 3 to maintain good stability and reliability even in strong vibration environments, and is not prone to deformation or failure. This feature is particularly suitable for transformer monitoring requirements in high-voltage, strong vibration scenarios, ensuring the installation quality of the entire sensor device.

[0049] During the manufacturing process of the fixed arm 3, the reinforcing rib plate 33 can be seamlessly integrated into the fixed arm 3. For example, high-strength aluminum alloy is selected as the material of the fixed arm 3, and the reinforcing rib plate 33 is made of carbon fiber composite material, which can effectively meet the dual requirements of strength and lightweight. This design not only ensures the stability of the fixed arm 3, but also reduces the overall weight of the system to some extent, facilitating transportation and installation operations.

[0050] In one embodiment, the waterproof shell 4 of the online monitoring sensor device for oil-immersed transformers with positioning structure of the present application is externally coated with an anti-corrosion coating. This not only extends the service life of the waterproof shell 4, but also enables it to resist chemical corrosion in complex industrial environments. The anti-corrosion coating is made of special materials with excellent protective properties and long-term weather resistance. This design is particularly suitable for sensors that work in humid and highly corrosive industrial environments for a long time, ensuring the structural integrity and functionality of the sensor are not affected. To improve overall reliability, the coating is tightly attached to the surface of the shell and undergoes rigorous testing to meet high-quality standards. In addition, this design does not require additional maintenance of the external environment, further reducing the operating costs in the later stage.

[0051] For example, in the specific implementation process, the waterproof shell 4 after surface treatment is first completely covered with a thin and uniform anti-corrosion coating. This process step is usually completed by spraying or dipping to ensure good adhesion and sealing between the coating and the shell. To ensure that the coating thickness meets the standard requirements, thickness measurement points can be set at specific locations to ensure the uniformity and integrity of the coating everywhere. The entire process strictly follows the operating specifications to ensure stable and reliable quality at each link.

[0052] In one embodiment, the waterproof shell 4 of the online monitoring sensor device for oil-immersed transformers with positioning structure of the present application is internally integrated with a cooling fan assembly 42 to ensure that the temperature of the monitoring device during long-term operation is within a safe range, thereby improving the overall stability of the equipment. The monitoring device is installed on the oil-immersed transformer and is responsible for collecting and analyzing the working parameters inside the transformer and transmitting the data to the control system. To prevent electronic components from malfunctioning due to high temperatures caused by long-term operation, an integrated cooling design is used. Specifically, the cooling fan assembly 42 is located inside the waterproof shell 4 and is close to the key parts that need to be cooled. Such a layout can ensure that the fan effectively extracts internal hot air. The waterproof shell 4 not only has excellent protective properties to cope with harsh environments, but also has good ventilation conditions to provide the best working environment for internal components.

[0053] In terms of technical implementation, for example, a wind guide pipe can be designed to connect to the outside of the waterproof shell 4, allowing the cooling fan to effectively expel internal heat to the outside space. At the same time, the joint between the waterproof shell 4 and the wind guide pipe is sealed to prevent water from entering and affecting the internal circuit. By reasonably planning the position of the cooling fan and the airflow direction, the heat exchange efficiency can be optimized without affecting the waterproof properties, so that the entire online monitoring sensor device can maintain a reliable operating state in a high-temperature environment.

[0054] In one embodiment, the waterproof housing 4 of the online monitoring sensor device for oil-immersed transformers with positioning structure of the present application is provided with a unique waterproof plug interface 43. The interface is located at the part where the waterproof housing 4 is connected with the external cable, so that the external cable can be conveniently inserted or pulled out without damaging the original sealing performance. The waterproof plug interface 43 not only ensures that the device has excellent protection characteristics, but also improves the maintenance flexibility and convenience of the overall system. Through reasonable design arrangement, this structural improvement makes users no longer worry about liquid leakage or electrical failure problems caused by wiring operation when replacing or upgrading the monitoring device, thereby ensuring the safe and stable operation of the oil-immersed transformer.

[0055] Specifically, the interface is composed of multiple layers of composite materials, in which an elastic sealing ring is used inside to provide primary protection for tightly wrapping the external cable, and a high-strength mechanical locking component is combined outside to realize secondary reinforcement function through precise fitting. In order to achieve the ideal sealing effect, a dustproof and waterproof groove structure is specially designed during assembly, further enhancing the durability and reliability of the entire system. For example, when maintaining, the technician only needs to simply loosen the locking device to take out the cable, and it is also easy to reinsert without affecting the original airtight environment. In this way, efficient maintenance work is ensured while maintaining a high standard of work.

[0056] In actual operation, when the device is in use, the positioning frame 1 can be placed in a suitable position of the oil-immersed transformer, and the multi-point locking mechanism 13 is used to realize multi-point reinforcement through bolts to prevent loosening and ensure the stability of the positioning frame 1. At this time, the shock-absorbing layer 11 at the bottom effectively attenuates high-frequency vibration, and the anti-skid structure 12 increases the friction to prevent displacement. Then, the fixed arm 3 is connected with the positioning frame 1 and extends to both sides to keep the position of the monitoring probe 2 stable and accurately positioned, during which the flexible buffer unit absorbs any possible lateral impact force to ensure monitoring accuracy. Next, the monitoring probe 2 starts to collect real-time parameter change data in the oil-immersed transformer. The data transmission process is protected by the waterproof housing 4, which wraps the monitoring probe 2 and its connecting line part, and the waterproof level reaches IP68 standard, which can effectively prevent the external environment from eroding and damaging the internal electronic components. The whole process ensures the reliability and accuracy of the online monitoring sensor device for oil-immersed transformers.

[0057] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the embodiments of the present disclosure. It should be understood that the above description is only a specific embodiment of the present disclosure and is not used to limit the protection scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the protection scope of the embodiments of the present disclosure.

Claims

1. An oil-immersed transformer on-line monitoring sensor device having a positioning structure, characterized by, The utility model relates to a kind of oil-immersed transformer monitoring device, including: Positioning frame (1) for providing support, the bottom of the positioning frame (1) is provided with shock-absorbing layer (11), shock-absorbing layer (11) is provided with antiskid structure (12), and the positioning frame (1) is provided with multi-point locking mechanism (13), wherein antiskid structure (12) contains cross line, multi-point locking mechanism (13) is reinforced by bolt in multiple places; Monitoring probe (2) for real-time acquisition of parameter change in oil-immersed transformer; Fixed arm (3) for connecting positioning frame (1) and monitoring probe (2), and being provided with flexible buffer unit to absorb lateral impact force;Waterproof shell (4) is wrapped monitoring probe (2);Wherein The end of the fixed arm (3) is provided with fine adjustment slide rail (31), and electric push rod (34) is installed in fine adjustment slide rail, and monitoring probe (2) can be moved by electric push rod (34); The monitoring probe (2) is installed in fixed arm (3) by damping pivot and is equipped with angle adjusting knob (21) at one end of damping pivot.

2. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: The flexible buffer unit is helical spring.

3. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: The positioning frame (1) is further provided with support foot pad (14).

4. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: The shock-absorbing layer (11) is fixed with the positioning frame (1) by screw (15), and is provided with elastic sealing pad (16) at contact surface.

5. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: Vibration compensation module (22) is arranged on the monitoring probe (2).

6. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: Damping shock absorber (32) is installed at the end of the fixed arm (3).

7. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: The middle of the fixed arm (3) is provided with reinforcing rib plate (33).

8. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 1, characterized in that: The outer layer of the waterproof shell (4) is provided with corrosion-resistant coating (41).

9. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 8, characterized in that: The internal of the waterproof shell (4) is integrated with heat dissipation fan assembly (42).

10. The online monitoring sensor device for oil-immersed transformer with positioning structure according to claim 9, characterized in that: The wiring part of the waterproof shell (4) is provided with waterproof plug-in interface (43).

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