Internal environment state monitoring equipment for oil-immersed transformer

Abstract

The invention belongs to the technical field of electrical monitoring, and particularly relates to oil-immersed transformer internal environment state monitoring equipment which comprises a transfer box, protection frames, a high-cycle gas measuring mechanism, a low-cycle gas measuring mechanism and a transfer type liquid conveying mechanism, the protection frames are symmetrically arranged on the two sides of the transfer box, the high-cycle gas measuring mechanism is arranged on the transfer box, and the low-cycle gas measuring mechanism is arranged on the transfer box. The low-cycle gas measuring mechanism is arranged on the side wall of the transfer box, the transfer type liquid conveying mechanism is arranged at the bottom of the transfer box, the high-cycle gas measuring mechanism comprises a guide assembly, a shearing assembly and a high measuring assembly, and the guide assembly is arranged in the transfer box. The invention provides the equipment for monitoring the internal environment state of the oil-immersed transformer, which can be used for collecting internal characteristic gas of insulating oil which circularly flows at a high speed and also can be used for collecting internal characteristic gas of insulating oil which circularly flows at a low speed.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical monitoring, and in particular relates to an internal environmental status monitoring device for an oil-immersed transformer. Background Art

[0002] With the continued advancement of my country's smart grid construction and the rapid development of ultra-high voltage power transmission technology, power grid equipment is undergoing continuous updates and upgrades. Given the direct impact of the operational reliability of power grid equipment on the safe and stable operation of the grid, stricter standards for its safety and reliability have been established. As a key component of the power grid, oil-immersed transformers must receive high attention for their inspection and testing.

[0003] The existing oil-immersed transformer internal environment status monitoring equipment has the following problems: The existing oil-immersed transformer internal environment status monitoring equipment does not have the ability to collect the gas inside the high-speed circulating insulating oil, and the traditional oil-immersed transformer internal environment status monitoring equipment does not have the ability to collect the gas inside the low-speed flowing insulating oil. It is impossible to detect the discharge situation inside the transformer by analyzing the characteristic gas inside the insulating oil. Therefore, it cannot meet the use requirements of the existing oil-immersed transformer internal environment status monitoring equipment. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the existing technology, this solution provides an oil-immersed transformer internal environment status monitoring device that can collect characteristic gases inside insulating oil circulating at high speed and characteristic gases inside insulating oil circulating at low speed.

[0005] The technical solution adopted in this scheme is as follows: This scheme proposes an oil-immersed transformer internal environment status monitoring device, including a transfer box, a protective frame, a high-cycle gas measuring mechanism, a low-cycle gas measuring mechanism and an intermediate-type infusion mechanism. The protective frame is symmetrically arranged on both sides of the transfer box, the high-cycle gas measuring mechanism is arranged on the transfer box, the low-cycle gas measuring mechanism is arranged on the side wall of the transfer box, and the intermediate-type infusion mechanism is arranged at the bottom of the transfer box. The high-cycle gas measuring mechanism includes a guide component, a shear component and a high-measuring component. The guide component is arranged inside the transfer box, the shear component is arranged on the guide component, and the high-measuring component is arranged on the side of the protective frame away from the transfer box. The low-cycle gas measuring mechanism includes a low-measuring component and a floating component. The low-measuring component is arranged on the side wall of the transfer box, and the floating component is arranged on the bottom wall of the transfer box.

[0006] As a further preferred embodiment of the present invention, the guide assembly includes a guide groove, a sliding plate, a guide port, a guide column and a gas pressure sensor. The guide groove is arranged on the inner wall of the middle part of the transfer box, and the guide groove is open at one end. The sliding plate is slidingly arranged on the inner wall of the guide groove. Multiple groups of the guide ports are symmetrically arranged at both ends of the sliding plate. The guide column passes through the guide port and is arranged on the bottom wall of the guide groove. The gas pressure sensor is arranged on the upper side wall of the transfer box, and the detection end of the gas pressure sensor is arranged on the upper inner wall of the transfer box; the shearing assembly includes a slice and an impact spring. Multiple groups of the slices are arranged on the bottom wall of the sliding plate. The impact spring It is located between the top wall of the transfer box and the upper wall of the sliding plate; the high-measurement component includes a gas measuring tube, a gas storage rack, a detection cylinder, a vacuum pump, a gas composition sensor and a pressure relief valve. The gas storage rack is symmetrically arranged on the side of the protective frame away from the transfer box, and the detection cylinder is arranged at one end of the gas storage rack away from the protective frame. The vacuum pump is symmetrically arranged on the upper wall of the transfer box, and the vacuum pump suction end is arranged through the top wall of the transfer box. The gas measuring tube is connected between the upper wall of the transfer box and the upper wall of the detection cylinder. The gas composition sensor is arranged on the side wall of the transfer box, and the detection end of the gas composition sensor is arranged inside the detection cylinder. The pressure relief valve is connected to the bottom wall of the detection cylinder.

[0007] During use, the vacuum pump extracts gas from the upper half of the transfer box through the exhaust end. In the initial state, the impact spring is in an extended setting, the sliding plate is in contact with the bottom wall of the guide groove, a rubber ring is provided on the upper wall of the sliding plate close to the inner wall of the guide groove, and a sealing ring is provided on the bottom wall of the sliding plate outside the guide column. The sealing ring is in contact with the side wall of the guide column to separate the upper and lower parts of the transfer box. As the gas in the upper half of the transfer box is gradually discharged from the exhaust end of the vacuum pump into the gas measuring tube, the pressure inside the transfer box decreases. The sliding plate slides upward due to the deformation of the impact spring under the suction of the vacuum pump. The gas pressure sensor monitors the pressure in the upper half of the transfer box through the detection end. When the pressure in the upper half of the transfer box reaches the pressure value specified by the operator, the extraction of gas from the transfer box is stopped to maintain the negative pressure value inside the transfer box. The gas measuring tube discharges the gas into the detection cylinder. The pressure relief threshold of the pressure relief valve is pre-set. When the pressure inside the detection cylinder reaches the pressure relief threshold of the pressure relief valve, the pressure relief valve discharges the gas inside the detection cylinder. Discharge inside the transformer will cause the insulating oil to decompose and produce characteristic gases. The instantaneous gas production is large, and it is easy to reach an oversaturated state and generate bubbles. At the same time, in order to meet the heat dissipation needs of the transformer and increase the flow rate of the insulating oil, the insulating oil circulates at high speed into the transfer box and impacts the sliding plate. The slices split the bubbles in the insulating oil through shearing. Under the impact of the high-speed circulating insulating oil, the sliding plate slides up along the guide groove using the deformation of the impact spring. The sliding plate drives the guide port to separate from the guide column, and the guide port is connected. The gas enters the gas measuring tube through the guide port under the suction of the vacuum pump, and finally the gas flows into the detection tube through the gas measuring tube. The gas composition sensor uses the detection end to analyze the gas composition inside the detection tube, thereby monitoring the discharge state of the internal environment of the oil-immersed transformer.

[0008] Preferably, the low-pressure test assembly includes a negative pressure box, a low-pressure pipe, an air extraction box, an annular sleeve, an air extraction port, a liquid spraying pipe and a conical fan blade. The negative pressure box is symmetrically arranged on both sides of the bottom of the transfer box, the low-pressure pipe is connected between the upper side wall of the transfer box and the negative pressure box, the air extraction box passes through the transfer box and is connected to the side of the negative pressure box away from the low-pressure pipe, the annular sleeve passes through the end of the air extraction box away from the negative pressure box, the air extraction port is arranged on the inner wall of the annular sleeve, and the liquid spraying pipe is symmetrically arranged on the bottom wall of the transfer box below the slice. The conical fan blades are arranged at one end of the liquid spraying pipe away from the bottom wall of the transfer box; the floating assembly includes a buoyancy seat, a buoyancy block, a buoyancy spring, a buoyancy rod and a blocking column. The buoyancy seat is symmetrically arranged at the bottom of the transfer box, the buoyancy spring is arranged on the upper wall of the buoyancy seat, the buoyancy block is arranged on the upper wall of the buoyancy spring, the buoyancy rod passes through the conical fan blades and is arranged on the upper wall of the buoyancy block, the blocking column passes through the annular sleeve and is arranged on the upper wall of the buoyancy rod, the outer diameter of the blocking column is consistent with the inner diameter of the annular sleeve, and the blocking column seals the exhaust port.

[0009] During use, in order to save energy, when the low-speed circulation can meet the heat dissipation demand of the transformer, the insulating oil flows at a low speed inside the circulation pipe. The insulating oil flowing at a low speed cannot push the sliding plate to drive the guide port away from the guide column. After the insulating oil flows out from the spray pipe, it flows down along the surface of the conical fan blade. The conical fan blade is used to reduce the flow thickness of the insulating oil, so as to facilitate the rapid release of bubbles inside it. The insulating oil flowing at a low speed gathers at the bottom of the transfer box. At this time, the buoyancy block is affected by the buoyancy of the insulating oil and uses the deformation of the buoyancy spring to drive the blocking column upward through the buoyancy rod. The blocking column is away from the exhaust port, and the exhaust port is connected. The vacuum pump extracts the gas from the lower half of the transfer box through the exhaust port. The gas enters the negative pressure box through the exhaust box. The negative pressure box transports the gas through the low-extraction tube and the gas measuring tube to the inside of the detection tube. The gas composition sensor monitors the gas composition entering the detection tube in real time.

[0010] Specifically, the intermediate type infusion mechanism includes a liquid extraction pipe, a liquid discharge valve, a liquid discharge pipe, an oil tank, a support frame and a circulation pump. The liquid extraction pipe passes through the transfer box and is connected to the bottom wall of the liquid spray pipe. The end of the liquid extraction pipe away from the liquid spray pipe is connected to the oil circuit for return after cooling. The liquid discharge valve is connected to the bottom wall of the transfer box between the liquid extraction pipes. The liquid discharge pipe is connected to the end of the liquid discharge valve away from the transfer box. The support frame is arranged on the bottom side wall of the transfer box. The oil tank is arranged on the side of the support frame away from the transfer box. The circulating pump is arranged on the side wall of the oil tank. The oil extraction end of the circulating pump passes through the inside of the oil tank. The oil discharge end of the circulating pump is connected to the transformer cooling oil circuit. The end of the liquid discharge pipe away from the liquid discharge valve is connected to the return oil end of the oil tank.

[0011] During use, the refluxed insulating oil is drawn into the transfer box through the extraction pipe, and the extraction pipe transports the insulating oil to the transfer box through the spray pipe. The insulating oil inside the transfer box is discharged into the drain pipe through the liquid discharge valve, and the drain pipe returns the insulating oil to the oil tank.

[0012] Wherein, a controller is provided on the side wall of the transfer box.

[0013] Preferably, the controller is electrically connected to the gas composition sensor, the gas pressure sensor and the circulation pump.

[0014] The beneficial effects achieved by adopting the above structure are as follows: Compared with the existing technology, this solution adopts a combination of high-cycle gas measuring mechanism, low-cycle gas measuring mechanism and intermediate-transformation infusion mechanism. Through the provided guide component, shearing component, high-measurement component, low-measurement component and floating component, the gas inside the insulating oil can be collected and detected. By analyzing the gas composition in the insulating oil, the discharge monitoring inside the oil-immersed transformer is realized to ensure the operating status of the transformer. On the one hand, the sliding plate and the slice are used to shear the bubbles in the insulating oil under high-speed circulation, so that the bubbles in the insulating oil are split. The gas in the high-speed circulating insulating oil is pumped by the suction effect of the vacuum pump. On the other hand, the conical fan blades can make the insulating oil circulating at a low speed flow in a fan shape along its surface, thinning the flow thickness of the insulating oil, which is convenient for the release of bubbles inside it. Moreover, since the insulating oil flowing at a low speed flows back to the inside of the oil tank at a slow speed, part of the insulating oil gathers at the bottom of the transfer box. The buoyancy block is affected by the buoyancy of the insulating oil, so that the air extraction port is connected, and the air extraction port extracts the gas in the lower half of the transfer box. The lower half of the transfer box is changed to a negative pressure state, thereby accelerating the release of bubbles inside the insulating oil, making it convenient to analyze the gas composition inside the insulating oil, and thus to detect the discharge state inside the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of this scheme; Figure 2 This is the main perspective view of this scheme; Figure 3 This is a schematic diagram of the combined structure of the guide component and the shear component of this solution; Figure 4 This is the main view of this scheme; Figure 5 This is a side view of the scheme; Figure 6 This is a top view of the scheme; Figure 7 for Figure 6 AA section view; Figure 8 for Figure 4 BB partial cross-sectional view; Figure 9 for Figure 4 Cross-sectional view of the CC portion; Figure 10 for Figure 7 A magnified structural view of Part I.

[0016] Among them, 1. Transfer box, 2. High cycle gas measurement mechanism, 3. Guide assembly, 4. Guide groove, 5. Sliding plate, 6. Guide port, 7. Guide column, 8. Shear assembly, 9. Slice, 10. Impact spring, 11. Gas measurement tube, 12. Protective frame, 13. High measurement assembly, 14. Gas storage rack, 15. Detection cylinder, 16. Vacuum pump, 17. Gas composition sensor, 18. Low cycle gas measurement mechanism, 19. Low measurement assembly, 20. Negative pressure box, 21. Low suction tube, 2 2. Vacuum box, 23. Annular sleeve, 24. Vacuum port, 25. Float assembly, 26. Buoyancy seat, 27. Buoyancy block, 28. Buoyancy spring, 29. Buoyancy rod, 30. Blocking column, 31. Intermediate infusion mechanism, 32. Liquid extraction tube, 33. Liquid discharge valve, 34. Liquid discharge tube, 35. Liquid spray tube, 36. Controller, 37. Conical fan blades, 38. Gas pressure sensor, 39. Pressure relief valve, 40. Oil tank, 41. Support frame, 42. Circulation pump.

[0017] The accompanying drawings are used to provide further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present solution, they are used to explain the present solution and do not constitute a limitation to the present solution. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of this solution will be clearly and completely described below in conjunction with the drawings in the embodiments of this solution. Obviously, the described embodiments are only part of the embodiments of this solution, not all of the embodiments; based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0019] In the description of this solution, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0020] like Figures 1-10 As shown, the present invention proposes an internal environmental status monitoring device for an oil-immersed transformer, comprising a transfer box 1, a protective frame 12, a high-cycle gas measuring mechanism 2, a low-cycle gas measuring mechanism 18 and an intermediate-type infusion mechanism 31. The protective frame 12 is symmetrically arranged on both sides of the transfer box 1, the high-cycle gas measuring mechanism 2 is arranged on the transfer box 1, the low-cycle gas measuring mechanism 18 is arranged on the side wall of the transfer box 1, and the intermediate-type infusion mechanism 31 is arranged at the bottom of the transfer box 1. The high-cycle gas measuring mechanism 2 comprises a guide component 3, a shear component 8 and a high-measuring component 13. The guide component 3 is arranged inside the transfer box 1, the shear component 8 is arranged on the guide component 3, and the high-measuring component 13 is arranged on the side of the protective frame 12 away from the transfer box 1. The low-cycle gas measuring mechanism 18 comprises a low-measuring component 19 and a floating component 25. The low-measuring component 19 is arranged on the side wall of the transfer box 1, and the floating component 25 is arranged on the bottom wall of the transfer box 1.

[0021] The guide assembly 3 includes a guide groove 4, a sliding plate 5, a guide opening 6, a guide column 7 and a gas pressure sensor 38. The guide groove 4 is provided on the inner wall of the middle part of the transfer box 1, and the guide groove 4 is open at one end. The sliding plate 5 is slidingly provided on the inner wall of the guide groove 4. Multiple groups of the guide openings 6 are symmetrically provided at both ends of the sliding plate 5. The guide column 7 passes through the guide openings 6 and is provided on the bottom wall of the guide groove 4. The gas pressure sensor 38 is provided on the upper side wall of the transfer box 1, and the detection end of the gas pressure sensor 38 is provided on the upper inner wall of the transfer box 1; the shearing assembly 8 includes a slice 9 and an impact spring 10. Multiple groups of the slices 9 are provided on the bottom wall of the sliding plate 5, and the impact spring 10 is provided on the top wall of the transfer box 1 and the upper wall of the sliding plate 5. between; the high-measurement component 13 includes a gas measuring tube 11, a gas storage rack 14, a detection cylinder 15, a vacuum pump 16, a gas composition sensor 17 and a pressure relief valve 39, the gas storage rack 14 is symmetrically arranged on the side of the protective rack 12 away from the transfer box 1, the detection cylinder 15 is arranged at one end of the gas storage rack 14 away from the protective rack 12, the vacuum pump 16 is symmetrically arranged on the upper wall of the transfer box 1, the vacuum pump 16 exhaust end is arranged through the top wall of the transfer box 1, the gas measuring tube 11 is connected between the upper wall of the transfer box 1 and the upper wall of the detection cylinder 15, the gas composition sensor 17 is arranged on the side wall of the transfer box 1, the detection end of the gas composition sensor 17 is arranged inside the detection cylinder 15, and the pressure relief valve 39 is connected to the bottom wall of the detection cylinder 15.

[0022] The low-test component 19 includes a negative pressure box 20, a low-extraction pipe 21, an air pumping box 22, an annular sleeve 23, an air pumping port 24, a liquid spraying pipe 35 and a conical fan blade 37. The negative pressure box 20 is symmetrically arranged on both sides of the bottom of the transfer box 1. The low-extraction pipe 21 is connected between the upper side wall of the transfer box 1 and the negative pressure box 20. The air pumping box 22 passes through the transfer box 1 and is connected to the side of the negative pressure box 20 away from the low-extraction pipe 21. The annular sleeve 23 passes through the end of the air pumping box 22 away from the negative pressure box 20. The air pumping port 24 is arranged on the inner wall of the annular sleeve 23. The liquid spraying pipe 35 is symmetrically arranged on the bottom wall of the transfer box 1 below the slice 9. The conical fan blades 37 are arranged at one end of the liquid spraying pipe 35 away from the bottom wall of the transfer box 1; the float assembly 25 includes a buoyancy seat 26, a buoyancy block 27, a buoyancy spring 28, a buoyancy rod 29 and a blocking column 30. The buoyancy seat 26 is symmetrically arranged at the bottom of the transfer box 1, the buoyancy spring 28 is arranged on the upper wall of the buoyancy seat 26, the buoyancy block 27 is arranged on the upper wall of the buoyancy spring 28, the buoyancy rod 29 passes through the conical fan blades 37 and is arranged on the upper wall of the buoyancy block 27, the blocking column 30 passes through the annular sleeve 23 and is arranged on the upper wall of the buoyancy rod 29, the outer diameter of the blocking column 30 is consistent with the inner diameter of the annular sleeve 23, and the blocking column 30 seals the exhaust port 24.

[0023] The intermediate type infusion mechanism 31 includes a liquid extraction pipe 32, a liquid discharge valve 33, a discharge pipe 34, an oil tank 40, a support frame 41 and a circulation pump 42. The liquid extraction pipe 32 passes through the transfer box 1 and is connected to the bottom wall of the spray pipe 35. The end of the liquid extraction pipe 32 away from the spray pipe 35 is connected to the oil circuit for return after cooling. The liquid discharge valve 33 is connected to the bottom wall of the transfer box 1 between the liquid extraction pipe 32, and the discharge pipe 34 is connected to the end of the liquid discharge valve 33 away from the transfer box 1. The support frame 41 is provided on the bottom side wall of the transfer box 1, and the oil tank 40 is provided on the side of the support frame 41 away from the transfer box 1. The circulating pump 42 is provided on the side wall of the oil tank 40. The oil extraction end of the circulating pump 42 passes through the inside of the oil tank 40, and the oil discharge end of the circulating pump 42 is connected to the transformer cooling oil circuit. The end of the discharge pipe 34 away from the liquid discharge valve 33 is connected to the return oil end of the oil tank 40.

[0024] A controller 36 is provided on the side wall of the transfer box 1 .

[0025] The controller 36 is electrically connected to the gas composition sensor 17 , the gas pressure sensor 38 , and the circulation pump 42 .

[0026] During specific use, the end of the liquid extraction pipe 32 away from the liquid injection pipe 35 is connected to the oil circuit for return after cooling, the end of the liquid discharge pipe 34 away from the liquid discharge valve 33 is connected to the oil return end of the oil tank 40, and the oil discharge end of the circulating pump 42 is connected to the transformer cooling oil circuit. A rubber ring is provided on the end of the upper wall of the sliding plate 5 close to the inner wall of the guide groove 4, and a sealing ring is provided on the bottom wall of the sliding plate 5 outside the guide column 7. The sealing ring is in contact with the side wall of the guide column 7 to separate the upper and lower parts of the transfer box 1; The controller 36 controls the vacuum pump 16 to start, and the vacuum pump 16 extracts the gas from the upper half of the transfer box 1 through the exhaust end. In the initial state, the impact spring 10 is extended, and the sliding plate 5 is in contact with the bottom wall of the guide groove 4. As the gas in the upper half of the transfer box 1 is gradually discharged from the exhaust end of the vacuum pump 16 into the gas measuring pipe 11, the internal pressure of the transfer box 1 decreases. The sliding plate 5 slides up under the suction of the vacuum pump 16 using the deformation of the impact spring 10, and the gas measuring pipe 11 transports the gas discharged from the upper half of the transfer box 1 to the gas measuring pipe 11. When the gas reaches the inside of the detection cylinder 15, the controller 36 controls the gas pressure sensor 38 to start. The gas pressure sensor 38 monitors the pressure of the upper half of the transfer box 1 through the detection end. When the pressure of the upper half of the transfer box 1 reaches the pressure value specified by the operator, the extraction of gas from the transfer box 1 is stopped. After the detection end of the gas pressure sensor 38 detects that the pressure in the upper half of the transfer box 1 has increased, the controller 36 controls the vacuum pump 16 to discharge the gas from the upper half of the transfer box 1 to maintain the negative pressure value inside the transfer box 1. The guide port 6 is blocked, and the pressure relief valve 39 is opened to discharge the gas inside the detection tube 15. After the air inside the detection tube 15 is discharged, the pressure relief valve 39 is closed, and the pressure relief threshold of the pressure relief valve 39 is preset; When the transformer is discharged, the insulating oil will decompose and produce characteristic gases. The instantaneous gas production is large, and it is easy to reach an oversaturated state and generate bubbles. In the first embodiment, in order to meet the heat dissipation demand of the transformer, the flow rate of the insulating oil is usually increased. The controller 36 controls the circulation pump 42 to start. The circulation pump 42 extracts the insulating oil in the oil tank 40 through the oil pumping end, and the insulating oil is transported to the inside of the transformer for heat dissipation. The refluxed insulating oil flows into the spray pipe 35 through the liquid extraction pipe 32. The spray pipe 35 transports the insulating oil to the inside of the transfer box 1. After entering the inside of the transfer box 1, the insulating oil circulating at a high speed impacts the slice 9 provided on the surface of the sliding plate 5. The slice 9 is arranged perpendicular to the sliding plate 5. The slice 9 splits the bubbles in the insulating oil through the shearing effect. Under the impact of the high-speed circulating insulating oil, the sliding plate 5 slides and rises along the guide groove 4 by virtue of the deformation of the impact spring 10. The sliding plate 5 drives the guide port 6 to separate from the guide column 7, and the guide port 6 is connected. The gas generated by the bubble splitting enters the gas measuring pipe 11 through the guide port 6 under the suction of the vacuum pump 16. Finally, the gas flows into the detection cylinder 15 through the gas measuring pipe 11. In the second embodiment, in order to save energy, when the low-speed circulation can meet the heat dissipation demand of the transformer, the controller 36 controls the circulation pump 42 to start, and the circulation pump 42 extracts the insulating oil inside the oil tank 40 through the oil pumping end, and the insulating oil is transported to the inside of the transformer for heat dissipation. The insulating oil flows at a low speed inside the circulation pipe. The insulating oil flowing at a low speed cannot push the sliding plate 5 to drive the guide port 6 away from the guide column 7. After the insulating oil flows out of the spray pipe 35, it flows down along the surface of the conical fan blade 37. The conical fan blade 37 is used to reduce the flow thickness of the insulating oil, which is convenient for the inner The bubbles in the lower part of the transfer box 1 are quickly released, and the low-speed flowing insulating oil gathers at the bottom of the transfer box 1. At this time, the buoyancy block 27 is affected by the buoyancy of the insulating oil, and uses the deformation of the buoyancy spring 28 to drive the blocking column 30 to move upward through the buoyancy rod 29. The blocking column 30 is away from the air extraction port 24, and the air extraction port 24 is connected. The vacuum pump 16 extracts the gas from the lower half of the transfer box 1 through the air extraction port 24. The gas enters the negative pressure box 20 through the air extraction box 22. The negative pressure box 20 transports the gas through the low extraction pipe 21 and the gas measuring pipe 11 to the inside of the detection cylinder 15; The controller 36 activates the gas composition sensor 17, which uses the detection end to analyze the gas composition inside the detection tube 15, thereby monitoring the discharge state of the internal environment of the oil-immersed transformer. When the gas pressure inside the detection tube 15 reaches the threshold of the pressure relief valve 39, the gas inside the detection tube 15 is discharged through the pressure relief valve 39. The insulating oil inside the transfer box 1 is discharged into the drain pipe 34 through the liquid discharge valve 33, and the drain pipe 34 returns the insulating oil to the insulating oil tank 40; the above operation can be repeated when it is used next time.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] The above description of the present solution and its implementation methods is non-limiting. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present solution, designs a similar structure and embodiment without creatively designing, they shall fall within the scope of protection of the present solution.

Claims

1. An oil-immersed transformer internal environment status monitoring device, comprising a transfer box (1) and a protective frame (12), characterized in that: The invention also includes a high-cycle gas measuring mechanism (2), a low-cycle gas measuring mechanism (18) and a transfer-type infusion mechanism (31). The protective frame (12) is symmetrically arranged on both sides of the transfer box (1). The transfer-type infusion mechanism (31) is arranged at the bottom of the transfer box (1). The high-cycle gas measuring mechanism (2) includes a guide component (3), a shear component (8) and a high-measurement component (13). The guide component (3) is arranged inside the transfer box (1). The shear component (8) is arranged on the guide component (3). The high-measurement component (13) is arranged on a side of the protective frame (12) away from the transfer box (1). The low-cycle gas measuring mechanism (18) includes a low-measurement component (19) and a floating component (25). The low-measurement component (19) is arranged on the side wall of the transfer box (1). The floating component (25) is arranged on the bottom wall of the transfer box (1). The guide assembly (3) includes a sliding plate (5) and a gas pressure sensor (38); the gas pressure sensor (38) is arranged on the upper side wall of the transfer box (1), and the detection end of the gas pressure sensor (38) is arranged on the upper inner wall of the transfer box (1); The shearing assembly (8) includes a cutting piece (9) and an impact spring (10); a plurality of cutting pieces (9) are arranged on the bottom wall of the sliding plate (5), and the impact spring (10) is arranged between the top wall of the transfer box (1) and the upper wall of the sliding plate (5); The high-pressure measuring component (13) includes a vacuum pump (16); the vacuum pump (16) is symmetrically arranged on the upper wall of the transfer box (1), and the vacuum pump (16) exhaust end is arranged through the top wall of the transfer box (1); The low-side component (19) includes an annular sleeve (23), an air extraction port (24) and a conical fan blade (37); The float assembly (25) includes a buoyancy seat (26), a buoyancy block (27), a buoyancy spring (28), a buoyancy rod (29) and a blocking column (30); the buoyancy seat (26) is symmetrically arranged at the bottom of the transfer box (1), the buoyancy spring (28) is arranged on the upper wall of the buoyancy seat (26), the buoyancy block (27) is arranged on the upper wall of the buoyancy spring (28), the buoyancy rod (29) passes through the conical fan blade (37) and is arranged on the upper wall of the buoyancy block (27), the blocking column (30) passes through the annular sleeve (23) and is arranged on the upper wall of the buoyancy rod (29), the outer diameter of the blocking column (30) is consistent with the inner diameter of the annular sleeve (23), and the blocking column (30) seals the air extraction port (24).

2. The oil-immersed transformer internal environment status monitoring device according to claim 1, characterized in that: The guide assembly (3) further comprises a guide groove (4), a guide opening (6) and a guide column (7); the guide groove (4) is arranged on the inner wall of the middle portion of the transfer box (1); the guide groove (4) is opened at one end; the sliding plate (5) is slidably arranged on the inner wall of the guide groove (4); a plurality of groups of the guide openings (6) are symmetrically arranged at both ends of the sliding plate (5); and the guide column (7) passes through the guide openings (6) and is arranged on the bottom wall of the guide groove (4).

3. The oil-immersed transformer internal environment status monitoring device according to claim 1, characterized in that: The high-pressure measuring assembly (13) further comprises a gas measuring tube (11), a gas storage rack (14), a detection tube (15), a gas composition sensor (17) and a pressure relief valve (39). The gas storage rack (14) is symmetrically arranged on a side of the protective rack (12) away from the transfer box (1). The detection tube (15) is arranged at one end of the gas storage rack (14) away from the protective rack (12). The gas measuring tube (11) is connected between the upper wall of the transfer box (1) and the upper wall of the detection tube (15). The gas composition sensor (17) is arranged on the side wall of the transfer box (1). The detection end of the gas composition sensor (17) is arranged inside the detection tube (15). The pressure relief valve (39) is connected to the bottom wall of the detection tube (15).

4. The oil-immersed transformer internal environment status monitoring device according to claim 1, characterized in that: The low-pressure test assembly (19) further includes a negative pressure box (20), a low suction pipe (21), an air extraction box (22) and a liquid spraying pipe (35), wherein the negative pressure box (20) is symmetrically arranged on both sides of the bottom of the transfer box (1), the low suction pipe (21) is connected between the upper side wall of the transfer box (1) and the negative pressure box (20), the air extraction box (22) passes through the transfer box (1) and is connected to the side of the negative pressure box (20) away from the low suction pipe (21), the annular sleeve (23) passes through the end of the air extraction box (22) away from the negative pressure box (20), the air extraction port (24) is arranged on the inner wall of the annular sleeve (23), the liquid spraying pipe (35) is symmetrically arranged on the bottom wall of the transfer box (1) below the slice (9), and the conical fan blade (37) is arranged at the end of the liquid spraying pipe (35) away from the bottom wall of the transfer box (1).

5. The oil-immersed transformer internal environment status monitoring device according to claim 1, characterized in that: The intermediate type infusion mechanism (31) comprises a liquid extraction pipe (32), a liquid discharge valve (33), a liquid discharge pipe (34), an oil tank (40), a support frame (41) and a circulation pump (42); the liquid extraction pipe (32) passes through the transfer box (1) and is connected to the bottom wall of the liquid spray pipe (35); one end of the liquid extraction pipe (32) away from the liquid spray pipe (35) is connected to the oil path for return after cooling; the liquid discharge valve (33) is connected to the bottom wall of the transfer box (1) between the liquid extraction pipes (32); and the liquid discharge pipe (34) is connected to one end of the liquid discharge valve (33) away from the transfer box (1).

6. The oil-immersed transformer internal environment status monitoring device according to claim 5, characterized in that: The support frame (41) is arranged on the bottom side wall of the transfer box (1), the oil tank (40) is arranged on the side of the support frame (41) away from the transfer box (1), the circulating pump (42) is arranged on the side wall of the oil tank (40), the oil pumping end of the circulating pump (42) is arranged through the inside of the oil tank (40), the oil discharge end of the circulating pump (42) is connected to the transformer cooling oil circuit, and the end of the drain pipe (34) away from the liquid discharge valve (33) is connected to the oil return end of the oil tank (40).

7. The oil-immersed transformer internal environment status monitoring device according to claim 1, characterized in that: A controller (36) is provided on the side wall of the transfer box (1).

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