Intelligent online monitoring device for power transformer
By designing an intelligent online monitoring device for power transformers, the problems of decreased insulation performance and weakened heat dissipation caused by transformer oil deterioration were solved. The device enables real-time monitoring and alarm of transformer oil quality, ensuring the stable operation of the transformer.
Patent Information
- Application Number
- CN202520275788.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In the existing technology, transformer oil may deteriorate rapidly due to factors such as high temperature, oxidation, excessive humidity, and impurities, leading to a decrease in insulation performance and a weakening of heat dissipation effect, which increases the risk of failure, but there is a lack of effective monitoring methods.
A smart online monitoring device for power transformers was designed, including a connecting pipe, a guide pipe, a transparent plate, a supplementary light, an oil color detection device, a temperature and pressure detection component, a controller, etc. By detecting the color, temperature, and pressure of the transformer oil, the device can achieve real-time monitoring and alarm of the transformer oil quality.
It enables accurate detection of transformer oil quality, timely detection of oil deterioration, reduction of failure risk, and ensures stable operation of transformers.
Smart Images
Figure CN223711800U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to transformer monitoring technical field, concretely relates to intelligent online monitoring device of power transformer. BACKGROUND
[0002] Transformer monitoring refers to the continuous or periodic inspection, measurement and analysis of the state of the transformer during operation. This process aims to timely detect abnormal conditions of the transformer, prevent potential faults and ensure stable, reliable and safe operation of the power system.
[0003] The transformer stores transformer oil inside. The transformer oil mainly plays the roles of insulation, cooling, protection and lubrication in the transformer. It can effectively isolate internal electrical contact, prevent electrical short circuit and quickly dissipate heat to prevent overheating. In addition, the transformer oil can also protect internal metal parts from corrosion and improve the efficiency and service life of the transformer. The transformer oil needs to be regularly detected, and the replacement period is comprehensively considered according to the oil quality and use environment. It is generally recommended to replace it in 2 to 10 years to ensure safe operation of the transformer.
[0004] The above prior art scheme has the following disadvantages: The transformer oil may deteriorate due to high temperature, oxidation, excessive humidity, impurities mixed in and ultraviolet radiation. Once deteriorated, the insulation performance of the transformer oil will decrease significantly, and the heat dissipation effect will also weaken, which may cause partial discharge or flashover in the transformer, thereby increasing the risk of failure. Although the transformer oil is generally replaced regularly during use, there is still a possibility of premature deterioration, and the transformer lacks effective monitoring function for the oil quality, which is not conducive to the maintenance and stable operation of the transformer. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide an intelligent online monitoring device for a power transformer to solve the technical problem that the existing technology lacks effective monitoring function for the oil quality of the transformer if the transformer oil deteriorates prematurely, which will easily adversely affect the transformer.
[0006] The technical problem to be solved by the utility model can be solved by the following technical scheme:
[0007] The intelligent online monitoring device for a power transformer comprises a connecting pipe arranged on an oil tank, a flow guide pipe arranged on the side of the connecting pipe, the other end of the flow guide pipe being in communication with the oil tank, a transparent plate arranged on the flow guide pipe and used for observing the color of the transformer oil, a light supplementing lamp arranged on one side of the flow guide pipe, the light supplementing lamp having the same horizontal height as the transparent plate, and an oil color detection device detachably mounted on the connecting pipe, the horizontal height of the oil color detection device being aligned with that of the transparent plate.
[0008] As a further scheme of the utility model: the flow guide pipe is arranged at the bottom of the connecting pipe, the flow guide pipe is arranged in L shape, and the bottom of the flow guide pipe is provided with a cleaning mechanism, the cleaning mechanism comprises an electric telescopic rod fixedly connected with the flow guide pipe, and a wiping plate for cleaning the transparent plate is fixedly connected to the extension end of the electric telescopic rod.
[0009] As a further scheme of the utility model: the connecting pipe is detachably provided with a detection pipe at one end away from the oil tank, the detection pipe is internally provided with a temperature detection assembly for detecting the temperature of transformer oil, a pressure detection assembly for detecting the pressure of transformer oil, and a controller electrically connected with the oil color detection device, the electric telescopic rod, the temperature detection assembly and the pressure detection assembly.
[0010] As a further scheme of the utility model: the connecting pipe is internally provided with a sliding valve block, the detection pipe is internally fixedly connected with an elastic assembly at one end away from the connecting pipe, the other end of the elastic assembly is matched with the sliding valve block, and the pressure detection assembly is arranged at one end of the detection pipe away from the connecting pipe.
[0011] As a further scheme of the utility model: the temperature detection assembly comprises a butt joint disc fixedly connected with the elastic assembly at one end close to the sliding valve block, and a temperature sensor for detecting the temperature of the sliding valve block is fixedly arranged on the butt joint disc.
[0012] As a further scheme of the utility model: the sliding valve block comprises an outer sealing ring in sliding fit with the connecting pipe, an inner heat conduction disc is fixedly arranged in the outer sealing ring, the inner heat conduction disc is made of metal material with good heat conductivity, a rotating disc is rotatably arranged on the side of the inner heat conduction disc close to the butt joint disc, and the bottom of the rotating disc is in contact with the inner heat conduction disc.
[0013] As a further scheme of the utility model: the detection pipe is threadedly connected with the connecting pipe, a limiting clamping plate is fixedly arranged at the bottom of the connecting pipe, and a clamping block matched with the limiting clamping plate is fixedly arranged on the oil color detection device.
[0014] As a further scheme of the utility model: a limiting ring for limiting the sliding valve block is fixedly arranged in the connecting pipe at one end close to the detection pipe.
[0015] As a further scheme of the utility model: a sampling valve port is arranged at the lower end of the flow guide pipe.
[0016] As a further scheme of the utility model: the elastic assembly comprises a spring arranged between one end of the detection pipe away from the connecting pipe and the butt joint disc.
[0017] The utility model discloses beneficial effects:
[0018] 1、 the utility model discloses in use, before periodic detection, can drive electric telescopic rod to extend first, drive the upper migration of the wiping board, thereby clear transparent plate and the oil stain on the light supplement lamp output, guarantee the accuracy of oil color detection device detection result. When detecting quality, open the light supplement lamp, and the light supplement lamp illuminates transformer oil, and the color of transformer oil is detected through oil color detection device, thereby realizing the check of transformer oil quality, after detection, electric telescopic rod contracts, drives the wiping board reset, that is, the single check of transformer oil quality is completed, and data is transferred through the controller, realizes the monitoring of transformer oil quality, and the maintenance and stable operation of transformer are convenient.
[0019] 2、 the utility model discloses in use, when the pressure in the oil tank is too big, the sliding valve block can move outward, thereby compressing the elastic component, when the distance between the sliding valve block and laser range finder is less than the specified value, the controller outputs an alarm signal, so that the staff can handle in advance. When the temperature in the oil tank is too high, the inner heat conduction disc and the transformer oil contact each other, and the inner heat conduction disc can transmit the temperature of the transformer oil to the temperature sensor through the rotating disc, so as to detect the temperature of the transformer oil. BRIEF DESCRIPTION OF DRAWINGS
[0020] The utility model will be further described below in combination with the drawings.
[0021] Figure 1 It is the whole structure schematic diagram of the utility model;
[0022] Figure 2 It is the utility model connecting pipe structure schematic diagram;
[0023] Figure 3 It is the whole longitudinal section structure schematic diagram of the utility model;
[0024] Figure 4 It is the structure schematic diagram of the utility model connecting pipe and detection pipe dismounting separation.
[0025] In the drawing: 1, oil tank;2, connecting pipe;201, flow guide pipe;202, limit ring;203, transparent plate;204, light supplement lamp;205, sampling valve port;3, detection pipe;4, controller;5, pressure detection component;6, elastic component;7, temperature detection component;701, butt joint disc;702, temperature sensor;8, oil color detection device;801, clamping block;802, limit clamping plate;9, sliding valve block;901, outer sealing ring;902, inner heat conduction disc;903, rotating disc;10, cleaning mechanism;1001, electric telescopic rod;1002, wiping board. DETAILED DESCRIPTION
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0027] like Figures 1-4 As shown, the intelligent online monitoring device for power transformers includes a connecting pipe 2 installed on an oil tank 1. The oil tank 1 stores transformer oil. A guide pipe 201 is installed on the side of the connecting pipe 2, and the other end of the guide pipe 201 is connected to the oil tank 1. A transparent plate 203 for observing the color of the transformer oil is installed on the guide pipe 201. A supplementary light 204 is installed on one side of the guide pipe 201, and the light from the supplementary light 204 can illuminate the transformer oil. The supplementary light 204 and the transparent plate 203 are at the same horizontal height. An oil color detection device 8 is detachably installed on the connecting pipe 2, and the horizontal height of the oil color detection device 8 is aligned with the transparent plate 203. The color grade of transformer oil generally does not exceed 1.5, and the light transmittance of normal transformer oil is between 0.850 and 0.950. When transformer oil deteriorates, its color will gradually change from light yellow to dark red, brown, dark brown, or even black, with a significant change in color grade. This device can detect the color of the transformer oil to check its quality. When inspecting the quality, the supplementary light 204 is turned on to illuminate the transformer oil. The color of the transformer oil is then detected by the oil color detection device 8, thereby enabling the inspection of the transformer oil quality.
[0028] In this embodiment, a limiting plate 802 is fixedly installed at the bottom of the connecting pipe 2, such as... Figure 2 As shown, a locking block 801 that cooperates with a limiting plate 802 is fixedly installed on the oil color detection device 8. The oil color detection device 8 is slidably engaged with the limiting plate 802 by the locking block 801, thereby realizing the detachable installation of the oil color detection device 8.
[0029] A guide tube 201 is located at the bottom of the connecting tube 2. The guide tube 201 is L-shaped, and a cleaning mechanism 10 for cleaning the output ends of the transparent plate 203 and the supplementary light 204 is provided at the bottom of the guide tube 201. The cleaning mechanism 10 includes an electric telescopic rod 1001 fixedly connected to the guide tube 201. A wiping plate 1002 for cleaning the output ends of the transparent plate 203 and the supplementary light 204 is fixedly connected to the extended end of the electric telescopic rod 1001. Before periodic testing, the electric telescopic rod 1001 can be extended first, driving the wiping plate 1002 to move upward, thereby cleaning the oil stains on the transparent plate 203 and the supplementary light 204, thus ensuring the accuracy of the test results of the oil color detection device 8. After testing, the electric telescopic rod 1001 retracts, driving the wiping plate 1002 to reset.
[0030] The detection tube 3 is threadedly connected to the end of the connecting pipe 2 away from the oil tank 1. The detection tube 3 is internally provided with a temperature detection assembly 7 for detecting the temperature of the transformer oil, a pressure detection assembly 5 for detecting the pressure of the transformer oil, and a controller 4 electrically connected to the oil color detection device 8, the electric telescopic rod 1001, the temperature detection assembly 7 and the pressure detection assembly 5.
[0031] The sliding valve block 9 is slidingly fitted in the connecting pipe 2. The connecting pipe 2 is internally fixedly provided with a limiting ring 202 for limiting the sliding valve block 9 at the end close to the detection tube 3, which can prevent the sliding valve block 9 from sliding out of the connecting pipe 2. The sliding valve block 9 divides the internal space of the connecting pipe 2 into two parts. The detection tube 3 is internally fixedly connected with an elastic assembly 6 at the end away from the connecting pipe 2. The other end of the elastic assembly 6 is matched with the sliding valve block 9. The elastic assembly 6 is used to maintain the distance between the sliding valve block 9 and the end of the detection tube 3, and has a certain elasticity. In this embodiment, the elastic assembly 6 can be a spring, as shown in FIG. 2. Figure 3 The pressure detection assembly 5 is arranged in the detection tube 3 at the end away from the connecting pipe 2. In this embodiment, the pressure detection assembly 5 includes a laser range finder for detecting the position of the sliding valve block 9. When the internal pressure of the oil tank 1 is too large, the sliding valve block 9 will move towards the detection tube 3, thereby compressing the elastic assembly 6. When the distance between the sliding valve block 9 and the laser range finder is less than x (x is the movement amount of the sliding valve block 9 when the oil pressure in the oil tank 1 exceeds the maximum specified oil pressure value), an alarm signal is output through the controller 4, so that the staff can handle it in advance.
[0032] The temperature detection assembly 7 comprises a docking disc 701 fixedly connected to the elastic assembly 6 close to one end of the sliding valve block 9, and a temperature sensor 702 for detecting the temperature of the sliding valve block 9 is fixedly arranged on the docking disc 701. The sliding valve block 9 comprises an outer sealing ring 901 in sliding fit with the inside of the connecting pipe 2, the outer sealing ring 901 is made of silica gel, an inner heat conduction disc 902 is fixedly arranged inside the outer sealing ring 901, the inner heat conduction disc 902 is made of metal material with good heat conduction, a rotating disc 903 is rotatably arranged on the side of the inner heat conduction disc 902 close to the docking disc 701, and the bottom of the rotating disc 903 is in contact with the inner heat conduction disc 902. When the connecting pipe 2 and the detection pipe 3 are installed, the docking disc 701 can be docked to the inside of the rotating disc 903, then the detection pipe 3 is squeezed to make the detection pipe 3 contact with the connecting pipe 2, the elastic assembly 6 is compressed to push the sliding valve block 9 to move backward, the detection pipe 3 is rotated, the detection pipe 3 drives the elastic assembly 6 and the docking disc 701 to rotate, the docking disc 701 drives the rotating disc 903 to rotate, so that the threaded connection of the detection pipe 3 and the connecting pipe 2 is facilitated. After installation, the temperature sensor 702 is in contact with the rotating disc 903, the rotating disc 903 is in contact with the inner heat conduction disc 902, the inner heat conduction disc 902 is in contact with the transformer oil, and the inner heat conduction disc 902 can transmit the temperature of the transformer oil to the temperature sensor 702 through the rotating disc 903 to realize the detection of the temperature of the transformer oil.
[0033] The flow guide pipe 201 is provided with a sampling valve port 205 at the lower end. When it is detected that the transformer oil may be deteriorated, the sampling valve port 205 can be opened to take out part of the sample to detect whether the transformer oil can continue to be used and determine the effective period of quality assurance.
[0034] In order to facilitate the understanding of the person skilled in the art to the embodiment of the present scheme, the working principle of the embodiment of the present scheme will be described in combination with specific application scenarios:
[0035] When the connecting pipe 2 and the detection pipe 3 are installed, the docking disc 701 can be docked to the inside of the rotating disc 903, then the detection pipe 3 is squeezed to make the detection pipe 3 contact with the connecting pipe 2, the elastic assembly 6 is compressed to push the sliding valve block 9 to move backward, the detection pipe 3 is rotated, the detection pipe 3 drives the elastic assembly 6 and the docking disc 701 to rotate, the docking disc 701 drives the rotating disc 903 to rotate, so that the threaded connection of the detection pipe 3 and the connecting pipe 2 is facilitated, then the clamping block 801 on the oil color detection device 8 is inserted into the limiting clamping plate 802 to make the output end of the oil color detection device 8 align with the transparent plate 203, and the fixing of the oil color detection device 8 is realized;
[0036] Before the regular detection, the electric telescopic rod 1001 can be driven to extend first, and the wiping plate 1002 is driven to move upwards, so that the oil stains on the output end of the transparent plate 203 and the light supplement lamp 204 are cleaned, and the accuracy of the detection result of the oil color detection device 8 is ensured. When the quality is detected, the light supplement lamp 204 is turned on, the light supplement lamp 204 illuminates the transformer oil, the color of the transformer oil is detected through the oil color detection device 8, and the quality of the transformer oil is checked. After detection, the electric telescopic rod 1001 is retracted, and the wiping plate 1002 is reset;
[0037] When it is detected that the transformer oil may be deteriorated, the sampling valve port 205 can be opened, so that part of the sample is taken out, whether the transformer oil can continue to be used is detected, and the effective period of the quality guarantee is determined;
[0038] When the internal pressure of the oil tank 1 is too large, the sliding valve block 9 moves outward, so that the elastic component 6 is compressed, when the distance between the sliding valve block 9 and the laser range finder is less than x (x is the moving amount of the sliding valve block 9 when the oil pressure in the oil tank 1 exceeds the maximum specified oil pressure value), an alarm signal is output through the controller 4, so that the staff can handle in advance. When the temperature in the oil tank 1 is too high, the inner heat conduction disc 902 is in contact with the transformer oil, the inner heat conduction disc 902 transmits the temperature of the transformer oil to the temperature sensor 702 through the rotating disc 903, and the temperature of the transformer oil is detected.
[0039] The above describes one embodiment of the utility model in detail, but the content described can only be the preferred embodiment of the utility model, and cannot be considered as limiting the scope of the embodiment of the utility model. Any equivalent change and improvement within the scope of the utility model application should still belong to the patent coverage range of the utility model.
Claims
1. An intelligent online monitoring device for power transformers, characterized in that, The system includes a connecting pipe (2) installed on the oil tank (1), a guide pipe (201) on the side of the connecting pipe (2), the other end of the guide pipe (201) being connected to the oil tank (1), a transparent plate (203) for observing the color of transformer oil on the guide pipe (201), a supplementary light (204) on one side of the guide pipe (201), the supplementary light (204) being at the same horizontal height as the transparent plate (203), and an oil color detection device (8) detachably installed on the connecting pipe (2), the oil color detection device (8) being at the same horizontal height as the transparent plate (203).
2. The intelligent online monitoring device for power transformers according to claim 1, characterized in that, The guide tube (201) is located at the bottom of the connecting tube (2). The guide tube (201) is L-shaped and a cleaning mechanism (10) is provided at the bottom of the guide tube (201). The cleaning mechanism (10) includes an electric telescopic rod (1001) fixedly connected to the guide tube (201). The extended end of the electric telescopic rod (1001) is fixedly connected to a wiping plate (1002) for cleaning the transparent plate (203).
3. The intelligent online monitoring device for power transformers according to claim 2, characterized in that, The end of the connecting pipe (2) away from the oil tank (1) is detachably equipped with a detection pipe (3). The detection pipe (3) is equipped with a temperature detection component (7) for detecting the temperature of the transformer oil, a pressure detection component (5) for detecting the pressure of the transformer oil, and a controller (4) that is electrically connected to the oil color detection device (8), the electric telescopic rod (1001), the temperature detection component (7) and the pressure detection component (5).
4. The intelligent online monitoring device for power transformers according to claim 3, characterized in that, The connecting pipe (2) has a sliding valve block (9) inside it. The detection pipe (3) has an elastic component (6) fixedly connected to one end away from the connecting pipe (2). The other end of the elastic component (6) is engaged with the sliding valve block (9). The pressure detection component (5) is located inside the detection pipe (3) at one end away from the connecting pipe (2). The pressure detection component (5) includes a laser rangefinder for detecting the position of the sliding valve block (9).
5. The intelligent online monitoring device for power transformers according to claim 4, characterized in that, The temperature detection component (7) includes a docking plate (701) fixedly connected to one end of the elastic component (6) near the sliding valve block (9), and a temperature sensor (702) for detecting the temperature of the sliding valve block (9) is fixedly disposed on the docking plate (701).
6. The intelligent online monitoring device for power transformers according to claim 5, characterized in that, The sliding valve block (9) includes an outer sealing ring (901) that slides inside the connecting pipe (2). An inner heat-conducting plate (902) is fixedly installed inside the outer sealing ring (901). The inner heat-conducting plate (902) is made of a metal material with good thermal conductivity. A rotating plate (903) is rotatably installed on the side of the inner heat-conducting plate (902) near the docking plate (701). The bottom of the rotating plate (903) is in contact with the inner heat-conducting plate (902).
7. The intelligent online monitoring device for power transformers according to claim 3, characterized in that, The detection tube (3) is threadedly connected to the connecting tube (2). A limit plate (802) is fixedly installed at the bottom of the connecting tube (2). A card block (801) that cooperates with the limit plate (802) is fixedly installed on the oil color detection device (8).
8. The intelligent online monitoring device for power transformers according to claim 1, characterized in that, The connecting pipe (2) has a limiting ring (202) fixedly installed inside the end near the detection pipe (3) for limiting the sliding valve block (9).
9. The intelligent online monitoring device for power transformers according to claim 1, characterized in that, A sampling valve port (205) is provided at the lower end of the guide tube (201).
10. The intelligent online monitoring device for power transformers according to claim 4, characterized in that, The elastic component (6) includes a spring that is fitted inside the detection tube (3) at the end away from the connecting tube (2) and between the docking plate (701).