Fault detection device for solar power supply distribution network

Abstract

The invention discloses a solar power supply distribution network fault detection device, and belongs to the technical field of fault detection equipment, and the device comprises a housing, the interior of the housing is fixedly connected with a supporting plate, the lower end of the supporting plate is provided with a first driving motor, and an output shaft of the first driving motor penetrates through the supporting plate and is fixedly connected with a circular detection platform. Two cylindrical detection grooves are formed in the upper end of the circular detection table, a hydraulic telescopic rod is installed on the inner top of the shell, the telescopic end of the hydraulic telescopic rod is fixedly connected with a U-shaped connecting plate, and the lower end of the U-shaped connecting plate is fixedly connected with a circular lifting plate. According to the device, aiming at the detection problem, the oil quality detection of the oil-immersed transformer can be efficiently realized by arranging the air exhaust mechanism and the stirring mechanism, and the cleaning mechanism is also arranged, so that the washing cleaning and high-temperature drying of the cylindrical detection groove can be automatically realized while the oil quality detection is performed, the maintenance workload is reduced, and the detection continuity is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of fault detection equipment, and in particular to a solar power distribution network fault detection device. Background Art

[0002] In solar power distribution systems, oil-immersed transformers are key equipment. Their operating status directly affects the stability and security of the entire power grid. Oil quality is a key indicator of the transformer's internal operating conditions. Accurate and efficient oil quality testing is crucial for timely detection of potential transformer faults and ensuring reliable power grid operation. When in use, the existing oil quality detection device can often only perform a single item of oil quality detection on the insulating oil sample, and its practicality is relatively general. At the same time, after multiple oil quality tests, impurities such as oil stains are likely to remain in the detection tank. These impurities will affect the accuracy of subsequent test results and require frequent manual cleaning, which undoubtedly increases the actual maintenance cost and time cost. Therefore, in order to solve these problems, we need to consider designing a solar-powered distribution network fault detection device. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and propose a solar-powered distribution network fault detection device. In terms of detection problems, the device is equipped with an exhaust mechanism and a stirring mechanism, which can efficiently realize oil quality detection of oil-immersed transformers. It is also equipped with a cleaning mechanism, which can automatically flush, clean and dry the cylindrical detection tank at high temperature while performing oil quality detection, reducing maintenance workload and ensuring the continuity of detection.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A solar power distribution network fault detection device includes a shell, a support plate is fixedly connected to the shell, a first drive motor is installed at the lower end of the support plate, the output shaft of the first drive motor passes through the support plate and is fixedly connected to a circular detection platform, the upper end of the circular detection platform is provided with two cylindrical detection slots, a hydraulic telescopic rod is installed at the inner top of the shell, the telescopic end of the hydraulic telescopic rod is fixedly connected to a U-shaped connecting plate, and the lower end of the U-shaped connecting plate is fixedly connected to a circular lifting plate; an air extraction mechanism, the air extraction mechanism includes a dual-axis motor installed at the upper end of the shell, the right end output shaft of the dual-axis motor is fixedly connected to a first rotating disk, the inner top of the shell is fixedly connected to a first piston cylinder, a first piston block that can move up and down is provided in the first piston cylinder, a first connecting rod is rotatably connected at the right end eccentric of the first rotating disk, the other end of the first connecting rod is rotatably connected to the upper end of the first piston block, and an electromagnetic three-way valve is installed on the right side of the shell; a stirring mechanism, the stirring mechanism is used to stir insulating oil; and a cleaning mechanism, the cleaning mechanism is used to clean the interior of the cylindrical detection slot.

[0005] Preferably, the bottom space of the first piston cylinder is connected with a first air extraction hose and a first air supply pipe, and a one-way valve is provided in the first air extraction hose and the first air supply pipe. The other end of the first air extraction hose passes through the circular lifting plate and is fixedly connected to the circular lifting plate. The other end of the first air supply pipe passes through the right inner wall of the shell and is connected with the electromagnetic three-way valve.

[0006] Preferably, the stirring mechanism includes a second driving motor installed on the upper end of the circular lifting plate, the upper end of the circular lifting plate is rotatably connected to two first rotating shafts, the upper end of the first rotating shaft located on the right side is fixedly connected to the output shaft of the second driving motor, the lower ends of the two first rotating shafts both pass through the circular lifting plate and are fixedly connected to a U-shaped push block, the two first rotating shafts are connected by a transmission assembly, the inner bottoms of the two cylindrical detection grooves are rotatably connected to the second rotating shaft, the left and right sides of the two second rotating shafts are fixedly connected to an L-shaped connecting block, a cleaning brush is provided on the outer side of each L-shaped connecting block, and a stirring hole plate is fixedly connected between the inner side of each L-shaped connecting block and the corresponding second rotating shaft.

[0007] Preferably, the cleaning mechanism includes a second piston cylinder fixedly connected to the top of the shell, a second piston block that can move up and down is provided in the second piston cylinder, the left end output shaft of the dual-axis motor is fixedly connected to the second rotating disk, the left end of the second rotating disk is eccentrically connected to the second connecting rod, the other end of the second connecting rod is rotatably connected to the upper end of the second piston block, a liquid storage tank is installed on the left side of the shell, the lower end of the support plate is fixedly connected to the third piston cylinder and the fourth piston cylinder, a third piston block that can move left and right is provided in the third piston cylinder, a fourth piston block that can move left and right is provided in the fourth piston cylinder, a connecting rod is fixedly connected between the third piston block and the fourth piston block, the right side space of the fourth piston cylinder is filled with expansion fluid, and a plurality of heat sinks are fixedly connected to the lower end of the fourth piston cylinder, the left side space of the third piston cylinder is connected to the inner bottom of the liquid storage tank through an infusion tube, the inner bottom of the third piston cylinder is connected to the inner bottom of the second piston cylinder through a first delivery pipe, and a one-way valve is provided in the first delivery pipe.

[0008] Preferably, the lower end of the second piston cylinder is fixedly connected to a heating cylinder, and a heating wire is provided in the heating cylinder. A conveying groove is provided at the upper end of the first rotating shaft located on the left side, and a rectangular hollow bar is fixedly connected to the first rotating shaft located on the left side, and the inner cavity of the rectangular hollow bar is connected to the conveying groove. A plurality of nozzles are installed at the lower end of the rectangular hollow bar, and the inner bottom of the second piston cylinder is connected to a conveying hose, and the other end of the conveying hose passes through the heating cylinder and is connected to the second conveying pipe, and a one-way valve is provided in the second conveying pipe, and the second conveying pipe is connected to the first rotating shaft on the left side through a rotary joint.

[0009] Preferably, the transmission assembly includes synchronous wheels respectively fixedly connected to the two first rotating shafts, and the two synchronous wheels are connected through a synchronous belt transmission.

[0010] Preferably, arc-shaped grooves are provided on the inner walls on the left and right sides of the two cylindrical detection grooves, and a detection electrode is provided in each of the arc-shaped grooves. An annular sealing gasket is fitted between the circular detection platform and the support plate. A first liquid drain port is provided on the inner bottom of the two cylindrical detection grooves, and a second liquid drain port is provided on the annular sealing gasket and the support plate. Two annular sealing rings are fixedly connected to the lower end of the circular lifting plate.

[0011] Preferably, a sliding door is rotatably provided on the front side of the shell, and a drain pipe is provided on the right side of the shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. An exhaust mechanism is set up. By starting the dual-axis motor to drive the first piston block to move up and down reciprocatingly, and cooperating with the first exhaust hose, the first gas supply pipe and the electromagnetic three-way valve, the gas in the cylindrical detection tank on the right can be extracted to form a negative pressure. The dissolved gas in the oil sample can be released through the negative pressure so that it can be subsequently transported to the gas chromatograph for detection. At the same time, with the two detection electrodes, the breakdown voltage test of the oil sample can be realized. The whole process is relatively convenient, and multiple oil quality tests of the oil-immersed transformer are efficiently realized, which improves the efficiency and quality of fault detection and has good overall practicality.

[0013] 2. A stirring mechanism is set up. During the negative pressure pumping process, the second drive motor is started to drive the U-shaped push block to rotate, which can drive the two stirring orifice plates below it to rotate, thereby stirring the oil sample in the cylindrical detection tank, so that the dissolved gas in the oil sample is fully released, effectively improving the degassing efficiency of the dissolved gas in the oil sample, and thus improving the actual detection efficiency.

[0014] 3. A cleaning mechanism is set up. During the negative pressure vacuuming process, the dual-axis motor can synchronously drive the second piston block to move back and forth up and down. In conjunction with the infusion tube, the first delivery tube, the delivery hose, the second delivery tube, and the delivery trough, the cleaning liquid in the liquid storage tank can be pumped into the rectangular hollow bar and sprayed out through multiple nozzles to conveniently flush the cylindrical detection tank on the left. At the same time, the second drive motor can synchronously drive the first rotating shaft on the left to rotate, and drive multiple nozzles to rotate synchronously to achieve all-round flushing of the cylindrical detection tank, effectively improving the cleaning effect, reducing the maintenance workload of the staff, and ensuring the effectiveness of subsequent detection.

[0015] 4. During the flushing process of the cleaning liquid, the first rotating shaft on the left can drive the corresponding U-shaped push block to rotate, driving the two stirring orifice plates, the two L-shaped connecting blocks and the cleaning brushes on their outer sides to rotate, thereby realizing the brushing of the inner wall of the cylindrical detection tank. At the same time, the cleaning liquid can be heated by the action of the heating wire in the heating tube, thereby further improving the actual cleaning effect.

[0016] 5. An expansion liquid is set up. Through the temperature transfer of the high-temperature cleaning liquid, the fourth piston block and the third piston block can be pushed to the left synchronously to realize the automatic conversion between liquid spray and air jet. Combined with the heating of the gas by the heating wire, high-temperature drying of the cylindrical detection tank can be achieved, thereby ensuring that the next test can be carried out quickly.

[0017] To sum up, an exhaust mechanism is provided, which extracts the gas in the cylindrical test tank and generates negative pressure, and cooperates with the stirring mechanism to stir the oil sample, thereby efficiently realizing the extraction and detection of dissolved gas in the oil sample and the breakdown voltage test of the oil sample. A cleaning mechanism is also provided, which automatically switches to spray high-temperature cleaning liquid and high-temperature gas into the cylindrical test tank, thereby realizing efficient cleaning of the cylindrical test tank and reducing maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a solar power distribution network fault detection device proposed by the present invention; Figure 2 for Figure 1 sectional view of Figure 3 for Figure 2 Cross-sectional view at the center circular inspection table; Figure 4 It is a partial structural diagram of the air extraction mechanism, the stirring mechanism and the cleaning mechanism; Figure 5 for Figure 4 Partial structural cross-sectional view; Figure 6 for Figure 5 A magnified view of point A; Figure 7 for Figure 4 Partial structural cross-sectional view; Figure 8 for Figure 7 Bottom-view cross-section of the central circular lifting plate.

[0019] In the figure: 1 housing, 2 support plate, 3 first drive motor, 4 circular detection platform, 5 cylindrical detection slot, 6 hydraulic telescopic rod, 7 U-shaped connecting plate, 8 circular lifting plate, 9 dual-axis motor, 10 first rotating disk, 11 first piston cylinder, 12 first piston block, 13 first connecting rod, 14 electromagnetic three-way valve, 15 first air extraction hose, 16 first air supply pipe, 17 second drive motor, 18 first rotating shaft, 19 U-shaped push block, 20 transmission assembly, 21 second rotating shaft, 22 L-shaped connecting block, 23 cleaning brush, 24 stirring orifice plate, 25 second piston cylinder, 26 second movable Plug, 27 second rotating disk, 28 second connecting rod, 29 liquid storage tank, 30 third piston cylinder, 31 fourth piston cylinder, 32 third piston block, 33 fourth piston block, 34 connecting rod, 35 expansion fluid, 36 infusion tube, 37 first delivery pipe, 38 heating cylinder, 39 heating wire, 40 delivery trough, 41 rectangular hollow bar, 42 nozzle, 43 delivery hose, 44 second delivery pipe, 45 rotary joint, 46 heat sink, 47 detection electrode, 48 annular sealing gasket, 49 first liquid discharge port, 50 second liquid discharge port, 51 annular sealing ring, 52 sliding door, 53 liquid discharge pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Reference Figure 1-8 A solar power distribution network fault detection device includes a shell 1, a support plate 2 is fixedly connected to the shell 1, a first drive motor 3 is installed at the lower end of the support plate 2, the output shaft of the first drive motor 3 passes through the support plate 2 (a bearing is provided at the penetration point) and is fixedly connected to a circular detection platform 4, the upper end of the circular detection platform 4 is provided with two cylindrical detection slots 5, the cylindrical detection slots 5 can be used to place insulating oil to be tested, a hydraulic telescopic rod 6 is installed at the top of the shell 1, the telescopic end of the hydraulic telescopic rod 6 is fixedly connected to a U-shaped connecting plate 7, the lower end of the U-shaped connecting plate 7 is fixedly connected to a circular lifting plate 8, a sliding door 52 is rotatably provided on the front side of the shell 1, and a drain pipe 53 is provided on the right side of the shell 1 to discharge liquid (insulating oil sample, cleaning fluid, etc.) at the bottom of the shell 1; Among them, it also includes an air extraction mechanism, which includes a dual-axis motor 9 installed at the upper end of the housing 1, the right end output shaft of the dual-axis motor 9 is fixedly connected to the first rotating disk 10, the inner top of the housing 1 is fixedly connected to the first piston cylinder 11, and the first piston cylinder 11 is provided with a first piston block 12 that can move up and down. The right end of the first rotating disk 10 is rotatably connected to the eccentric position. The other end of the first connecting rod 13 is rotatably connected to the upper end of the first piston block 12. An electromagnetic three-way valve 14 is installed on the right side of the housing 1; Among them, the bottom space of the first piston cylinder 11 is connected with a first air extraction hose 15 and a first air supply pipe 16, and a one-way valve is provided in the first air extraction hose 15 and the first air supply pipe 16. The one-way valve in the first air extraction hose 15 can control the gas in the cylindrical detection groove 5 on the right to flow into the inner bottom space of the first piston cylinder 11 in one direction, and the one-way valve in the first air supply pipe 16 can control the gas in the inner bottom space of the first piston cylinder 11 to flow into the electromagnetic three-way valve 14 in one direction. The other end of the first air extraction hose 15 passes through the circular lifting plate 8 and is fixedly connected to the circular lifting plate 8. The other end of the first air supply pipe 16 passes through the right inner wall of the shell 1 and is connected to the electromagnetic three-way valve 14. The other two ends of the electromagnetic three-way valve 14 are respectively connected with an exhaust pipe and a sampling pipe. The exhaust pipe is used to discharge gas to the outside, and the sampling pipe is connected to the gas input end of an external gas chromatograph; Among them, it also includes a stirring mechanism, which is used to stir the insulating oil. The stirring mechanism includes a second drive motor 17 installed at the upper end of the circular lifting plate 8. The upper end of the circular lifting plate 8 is rotatably connected to two first rotating shafts 18. The upper end of the first rotating shaft 18 located on the right is fixedly connected to the output shaft of the second drive motor 17. The lower ends of the two first rotating shafts 18 both penetrate the circular lifting plate 8 (a bearing is provided at the penetration point) and are fixedly connected to a U-shaped push block 19. By controlling the U-shaped push block 19 to move downward and rotate, it can resist and drive the corresponding stirring orifice plate 24 to rotate. The two first rotating shafts 18 are connected through a transmission assembly 20. The transmission assembly 20 includes two first rotating shafts 18 that are respectively fixedly connected to the two first rotating shafts 18. The two synchronous wheels are connected by a synchronous belt transmission. The inner bottoms of the two cylindrical detection grooves 5 are rotatably connected to the second rotating shaft 21. The left and right sides of the two second rotating shafts 21 are fixedly connected to L-shaped connecting blocks 22. The outer side of each L-shaped connecting block 22 is provided with a cleaning brush 23, which can be used to brush the inner wall of the cylindrical detection groove 5 during rotation to improve the cleaning effect of the oil sample adhered to the inner wall of the cylindrical detection groove 5. A stirring orifice 24 is fixedly connected between the inner side of each L-shaped connecting block 22 and the corresponding second rotating shaft 21. The oil sample in the cylindrical detection groove 5 can be stirred during rotation to improve the release efficiency of the dissolved gas in the oil sample under negative pressure; Among them, it also includes a cleaning mechanism, which is used to clean the interior of the cylindrical detection groove 5. The cleaning mechanism includes a second piston cylinder 25 fixedly connected to the top of the shell 1, and a second piston block 26 that can move up and down is provided in the second piston cylinder 25. The left end output shaft of the dual-axis motor 9 is fixedly connected to the second rotating disk 27, and the left end eccentrically connected to the second connecting rod 28. The other end of the second connecting rod 28 is rotatably connected to the upper end of the second piston block 26. A liquid storage tank 29 is installed on the left side of the shell 1, and the liquid storage tank 29 is filled with cleaning liquid, which can efficiently realize the cleaning of the oil sample adhered to the inner wall of the cylindrical detection groove 5 on the left side. The lower end of the support plate 2 is fixedly connected to the third piston cylinder 30 and the fourth piston cylinder 31. The fourth piston cylinder 31 is made of heat-conducting material. A third piston block 32 that can move left and right is provided in the third piston cylinder 30, and a fourth piston block 33 that can move left and right is provided in the fourth piston cylinder 31. A connecting rod 34 is fixedly connected between the third piston block 32 and the fourth piston block 33. The fourth piston cylinder 31 The right side space is filled with an expansion liquid 35, which is made of a paraffin-silicone oil microcapsule suspension. When the temperature rises to 50°, the thermal motion of the molecular chains is enhanced, the distance between the molecules increases, and the volume of the expansion liquid 35 increases. After the temperature drops, the molecular chain motion weakens and returns to the initial arrangement state, and the volume of the expansion liquid 35 decreases to its initial size. In this solution, when the expansion liquid 35 is heated, it can push the fourth piston block 33 and the third piston block 32 to move left synchronously to automatically switch between water spraying and air spraying. A plurality of heat sinks 46 are fixedly connected to the lower end of the fourth piston cylinder 31 to improve the heat dissipation efficiency of the expansion liquid 35. The left side space of the third piston cylinder 30 is connected to the inner bottom of the liquid storage tank 29 through the infusion tube 36. The inner bottom of the third piston cylinder 30 is connected to the inner bottom of the second piston cylinder 25 through the first delivery tube 37. A one-way valve is provided in the first delivery tube 37. The one-way valve in the first delivery tube 37 can control the one-way flow of liquid or gas in the left side space of the third piston cylinder 30 to the inner bottom of the second piston cylinder 25. Among them, the lower end of the second piston cylinder 25 is fixedly connected to a heating cylinder 38, and a heating wire 39 is provided in the heating cylinder 38. The heating cylinder 38 is also filled with temperature conducting oil, which can heat the liquid or gas in the delivery hose 43 (heated to a temperature of above 50°) in conjunction with the heating wire 39. A delivery groove 40 is provided at the upper end of the first rotating shaft 18 on the left side, and a rectangular hollow bar 41 is fixedly connected to the first rotating shaft 18 on the left side. The inner cavity of the rectangular hollow bar 41 is connected to the delivery groove 40, and a plurality of nozzles 42 are installed at the lower end of the rectangular hollow bar 41. The inner bottom of the second piston cylinder 25 is connected to the delivery hose 43, and the other end of the delivery hose 43 passes through the heating cylinder 38 and is connected to the second delivery pipe 44. A one-way valve is provided in the second delivery pipe 44. The one-way valve in the first delivery pipe 37 can control the liquid or gas at the bottom of the second piston cylinder 25 to flow into the inner cavity of the rectangular hollow bar 41 in one direction. The second delivery pipe 44 is connected to the first rotating shaft 18 on the left side through a rotary joint 45; Among them, arc-shaped grooves are provided on the inner walls on the left and right sides of the two cylindrical detection grooves 5, and a detection electrode 47 is provided in each arc-shaped groove. The two detection electrodes 47 are respectively positive and negative, and are electrically connected to the power supply of the equipment. The oil sample in the cylindrical detection groove 5 can be subjected to breakdown voltage detection to realize the detection of the oil quality of the oil sample. An annular sealing gasket 48 is fitted between the circular detection platform 4 and the support plate 2. A first drainage port 49 is provided on the inner bottom of the two cylindrical detection grooves 5, and a second drainage port 50 is provided on the annular sealing gasket 48 and the support plate 2. When the circular detection platform 4 is rotated so that the first drainage port 49 at the bottom of the corresponding cylindrical detection groove 5 is aligned with the two second drainage ports 50, the oil sample at the bottom of the cylindrical detection groove 5 can be automatically discharged. The lower end of the circular lifting plate 8 is fixedly connected to two annular sealing rings 51. By controlling the two annular sealing rings 51 to move downward and fit tightly with the upper end of the circular detection platform 4, the normal progress of subsequent vacuuming and cleaning operations can be ensured.

[0023] In the present invention, the cylindrical detection tank 5 on the right is used to detect insulating oil samples, and the cylindrical detection tank 5 on the left is used to discharge the oil samples after detection and clean them. When used for the first time, an appropriate amount of insulating oil sample to be detected is put into the cylindrical detection tank 5 on the right, and then the hydraulic telescopic rod 6 is controlled to drive the circular lifting plate 8 to move downward until the lower ends of the two annular sealing rings 51 are tightly fitted with the upper end of the circular detection platform 4. At this time, a closed space is formed in the cylindrical detection tank 5 on the right, which is convenient for subsequent air extraction operations. After the above operations are completed, the dual-axis motor 9 is started to drive the first rotating disk 10 to rotate, and the first piston block 12 is driven to move up and down reciprocatingly in the first piston cylinder 11 through the first connecting rod 13. Through the use of the first air extraction hose 15 and the one-way valve in the first air supply pipe 16, when the first piston block 12 moves upward, the gas in the cylindrical detection groove 5 on the right will be pumped into the inner bottom space of the first piston cylinder 11 along the first air extraction hose 15. When the first piston block 12 moves upward, the gas in the bottom space of the first piston cylinder 11 will be transported to the electromagnetic three-way valve 14 through the first air supply pipe 16, and then transported to the outside world through the electromagnetic three-way valve 14. In this process, the gas in the cylindrical detection groove 5 on the right will be continuously pumped away, and after running continuously for a specified time, the air pressure therein will be reduced and Generate negative pressure, then stop running the dual-axis motor 9. Under the action of negative pressure, the dissolved gas (H2, CO, CH4, C2H4, C2H2, etc.) in the oil sample will be gradually released over time. After the release is completed, control the electromagnetic three-way valve 14 to switch the output port and start the dual-axis motor 9 again. The released gas can be transported to an external gas chromatograph through the electromagnetic three-way valve 14 for gas component detection. The above process simulates the actual dissolved gas detection process in oil by first pumping out the gas in the cylindrical detection tank 5 and forming a negative pressure, then waiting for a period of time to wait for the dissolved gas in the oil sample to be released under negative pressure, and finally pumping the dissolved gas into the gas chromatograph for gas detection. The oil quality problem of the oil sample can be judged by detecting the gas components, thereby obtaining the cause of the failure of the oil-immersed transformer. During the negative pressure extraction process, the second drive motor 17 can be started at the same time to drive the first rotating shaft 18 and the U-shaped push block 19 on the right to rotate synchronously. When the U-shaped push block 19 rotates, the two vertical parts at the lower end thereof will respectively fit into the side walls of the corresponding stirring orifice plates 24, and push the two stirring orifice plates 24 to rotate around the second rotating shaft 21, thereby stirring the oil sample in the cylindrical detection tank 5 on the right. By continuously stirring the oil sample, the dissolved gas in the oil sample can be fully released, effectively improving the degassing efficiency of the dissolved gas. After the released gas is transported to the gas chromatograph for detection, the two detection electrodes 47 in the right cylindrical detection tank 5 can be controlled to perform a breakdown voltage test on the oil sample (the breakdown voltage test needs to be performed after the bubbles in the oil sample are eliminated. After the above-mentioned gas detection operation, the dissolved gas in the oil sample has been basically discharged, which can ensure that the oil sample can be tested normally). The breakdown voltage test can detect the dielectric strength of the oil sample, thereby ensuring more accurate detection of the oil quality of the oil sample; After completing the above-mentioned oil sample testing, the hydraulic telescopic rod 6 is controlled to drive the circular lifting plate 8 to move upward, and then the first drive motor 3 is started to drive the circular testing platform 4 to rotate 180 degrees, so that the two cylindrical testing grooves 5 exchange positions, and then the oil sample to be tested is filled into the cylindrical testing groove 5 currently located on the right and a second test is performed (for specific testing, please refer to the above process). At this time, the first drainage port 49 at the lower end of the cylindrical testing groove 5 on the left will be aligned with the two second drainage ports 50, so that the tested oil sample in the cylindrical testing groove 5 is automatically discharged to the inner bottom of the housing 1; During the secondary detection process, the output shaft on the left side of the dual-axis motor 9 drives the second rotating disk 27 to rotate, and drives the second piston block 26 to move up and down reciprocatingly in the second piston cylinder 25 through the second connecting rod 28. Through the use of the one-way valve in the first delivery pipe 37 and the delivery hose 43, when the second piston block 26 moves upward, the cleaning liquid in the liquid storage tank 29 will be pumped into the inner bottom space of the second piston cylinder 25 along the delivery pipe 36 → the left side space of the third piston cylinder 30 → the first delivery pipe 37. When the second piston block 26 moves upward, the cleaning liquid in the bottom space of the second piston cylinder 25 is pumped into the rectangular hollow bar 41 along the path of the delivery hose 43 → the second delivery pipe 44 → the delivery groove 40, and is finally sprayed downward through the multiple nozzles 42 to achieve flushing of the cylindrical detection groove 5. During this period, when the cleaning liquid is discharged from the bottom space of the second piston cylinder 25, it passes through the heating cylinder 38. The action of the heating wire 39 and the temperature-conducting oil in the heating cylinder 38 can heat the cleaning liquid, thereby improving the cleaning effect of the cleaning liquid; During the flushing process with the cleaning liquid, the second drive motor 17 (which will be started during the secondary detection) can drive the first rotating shaft 18 on the left to rotate together with the first rotating shaft 18 on the right through the action of the transmission assembly 20. When the first rotating shaft 18 on the left rotates, it can drive the rectangular hollow bar 41, multiple nozzles 42 and the U-shaped push block 19 on the left to rotate synchronously. When the multiple nozzles 42 rotate, it can achieve all-round flushing of the cylindrical detection tank 5 on the left. When the U-shaped push block 19 on the left rotates, it can drive the rotation of the two stirring orifice plates 24 in the cylindrical detection tank 5, and then drive the two L-shaped connecting blocks 22 and the cleaning brushes 23 on their outer sides to rotate, thereby achieving the scrubbing of the inner wall of the cylindrical detection tank 5, thereby improving the actual cleaning effect. When the flushing high-temperature cleaning liquid is discharged through the first drain port 49 and the two second drain ports 50, it will flow through the fourth piston cylinder 31. Under the action of the high-temperature cleaning liquid, the expansion liquid 35 will be heated and expanded and push the fourth piston block 33 to the left, and drive the third piston block 32 to the left through the connecting rod 34 until the third piston block 32 moves to the left to the left of the lower end of the first delivery pipe 37. At this time, due to the blockage of the third piston block 32, the delivery of the cleaning liquid will be stopped, and the external gas will be pumped along the first delivery pipe 37 → the inner bottom space of the second piston cylinder 25 → the delivery hose 43 → the second delivery pipe 44 → the delivery groove 40 → the rectangular hollow bar 41, and sprayed downward through multiple nozzles 42. The gas will also be heated when passing through the heating cylinder 38. In this way, by continuously spraying high-temperature gas, high-temperature drying of the inside of the cylindrical detection groove 5 on the left can be achieved, so that the cleaning operation inside the cylindrical detection groove 5 can be achieved to ensure that the subsequent inspection can be carried out as soon as possible.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A solar power distribution network fault detection device, characterized in that: include: A housing (1), wherein a support plate (2) is fixedly connected to the housing (1), a first drive motor (3) is installed at the lower end of the support plate (2), an output shaft of the first drive motor (3) passes through the support plate (2) and is fixedly connected to a circular detection platform (4), two cylindrical detection slots (5) are provided at the upper end of the circular detection platform (4), a hydraulic telescopic rod (6) is installed at the inner top of the housing (1), a telescopic end of the hydraulic telescopic rod (6) is fixedly connected to a U-shaped connecting plate (7), and a circular lifting plate (8) is fixedly connected to the lower end of the U-shaped connecting plate (7); An air extraction mechanism, the air extraction mechanism comprises a dual-axis motor (9) mounted on the upper end of a housing (1), the right end output shaft of the dual-axis motor (9) is fixedly connected to a first rotating disk (10), the inner top of the housing (1) is fixedly connected to a first piston cylinder (11), a first piston block (12) movable up and down is provided in the first piston cylinder (11), a first connecting rod (13) is rotatably connected to an eccentric portion of the right end of the first rotating disk (10), the other end of the first connecting rod (13) is rotatably connected to the upper end of the first piston block (12), and an electromagnetic three-way valve (14) is mounted on the right side of the housing (1); A stirring mechanism, wherein the stirring mechanism is used to stir the insulating oil; A cleaning mechanism is used to clean the interior of the cylindrical detection slot (5).

2. A solar power distribution network fault detection device according to claim 1, characterized in that: The bottom space of the first piston cylinder (11) is connected to a first air extraction hose (15) and a first air supply pipe (16), and a one-way valve is provided in each of the first air extraction hose (15) and the first air supply pipe (16). The other end of the first air extraction hose (15) passes through the circular lifting plate (8) and is fixedly connected to the circular lifting plate (8). The other end of the first air supply pipe (16) passes through the right inner wall of the shell (1) and is connected to the electromagnetic three-way valve (14).

3. A solar power distribution network fault detection device according to claim 1, characterized in that: The stirring mechanism includes a second driving motor (17) mounted on the upper end of the circular lifting plate (8), the upper end of the circular lifting plate (8) is rotatably connected to two first rotating shafts (18), the upper end of the first rotating shaft (18) located on the right side is fixedly connected to the output shaft of the second driving motor (17), the lower ends of the two first rotating shafts (18) both pass through the circular lifting plate (8) and are fixedly connected to a U-shaped push block (19), the two first rotating shafts (18) are connected to each other by a transmission assembly (20), the inner bottoms of the two cylindrical detection slots (5) are rotatably connected to the second rotating shaft (21), the left and right sides of the two second rotating shafts (21) are fixedly connected to an L-shaped connecting block (22), the outer side of each L-shaped connecting block (22) is provided with a cleaning brush (23), and the inner side of each L-shaped connecting block (22) is fixedly connected to the corresponding second rotating shaft (21) with a stirring hole plate (24).

4. A solar power distribution network fault detection device according to claim 3, characterized in that: The cleaning mechanism comprises a second piston cylinder (25) fixedly connected to the top of the housing (1), a second piston block (26) movable up and down is provided in the second piston cylinder (25), a second rotating disk (27) is fixedly connected to the left end output shaft of the dual-axis motor (9), a second connecting rod (28) is rotatably connected to the left eccentric portion of the second rotating disk (27), the other end of the second connecting rod (28) is rotatably connected to the upper end of the second piston block (26), a liquid storage tank (29) is installed on the left side of the housing (1), a third piston cylinder (30) and a fourth piston cylinder (31) are fixedly connected to the lower end of the support plate (2), a third piston cylinder (30) and a fourth piston cylinder (31) movable left and right are provided in the third piston cylinder (30), and a second connecting rod (28) is rotatably connected to the left eccentric portion of the second rotating disk (27). The fourth piston cylinder (31) has three piston blocks (32). A fourth piston block (33) that can move leftward and rightward is provided in the fourth piston cylinder (31). A connecting rod (34) is fixedly connected between the third piston block (32) and the fourth piston block (33). The right side space of the fourth piston cylinder (31) is filled with expansion liquid (35). The lower end of the fourth piston cylinder (31) is fixedly connected with a plurality of heat sinks (46). The left side space of the third piston cylinder (30) is connected to the inner bottom of the liquid storage tank (29) through a liquid infusion tube (36). The inner bottom of the third piston cylinder (30) is connected to the inner bottom of the second piston cylinder (25) through a first delivery tube (37). A one-way valve is provided in the first delivery tube (37).

5. A solar power distribution network fault detection device according to claim 4, characterized in that: The lower end of the second piston cylinder (25) is fixedly connected to a heating cylinder (38), and a heating wire (39) is provided in the heating cylinder (38). A conveying groove (40) is provided at the upper end of the first rotating shaft (18) on the left side, and a rectangular hollow bar (41) is fixedly connected to the first rotating shaft (18) on the left side, and the inner cavity of the rectangular hollow bar (41) is connected to the conveying groove (40). A plurality of nozzles (42) are installed at the lower end of the rectangular hollow bar (41). The inner bottom of the second piston cylinder (25) is connected to a conveying hose (43), and the other end of the conveying hose (43) passes through the heating cylinder (38) and is connected to a second conveying pipe (44). A one-way valve is provided in the second conveying pipe (44), and the second conveying pipe (44) is connected to the first rotating shaft (18) on the left side through a rotary joint (45).

6. A solar power distribution network fault detection device according to claim 3, characterized in that: The transmission assembly (20) comprises synchronous wheels respectively fixedly connected to the two first rotating shafts (18), and the two synchronous wheels are connected via a synchronous belt transmission.

7. A solar power distribution network fault detection device according to claim 1, characterized in that: The inner walls of the left and right sides of the two cylindrical detection grooves (5) are both provided with arc grooves, and a detection electrode (47) is provided in each of the arc grooves. An annular sealing gasket (48) is provided between the circular detection platform (4) and the support plate (2). The inner bottoms of the two cylindrical detection grooves (5) are both provided with a first liquid discharge port (49), and the annular sealing gasket (48) and the support plate (2) are both provided with a second liquid discharge port (50). The lower end of the circular lifting plate (8) is fixedly connected to two annular sealing rings (51).

8. A solar power distribution network fault detection device according to claim 1, characterized in that: A sliding door (52) is rotatably provided on the front side of the shell (1), and a drain pipe (53) is provided on the right side of the shell (1).

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