Transformer oil tank with rapid self-pressure-relief function and use method thereof

Abstract

The invention discloses a transformer oil tank with a rapid self-pressure-relief function and a using method thereof, and relates to the technical field of transformer equipment.The transformer oil tank comprises a transformer oil tank body, a tank cover and an exhaust guide rail, pressure relief openings are symmetrically formed in the top of the tank cover in a penetrating mode, and a top gas connecting plate is installed at the output end of the exhaust guide rail; the guide push seats are symmetrically mounted at the outer end of the top gas connecting plate, and the gas injection nozzles are mounted at the tops of the guide push seats. According to the transformer oil tank, the inflation combustion reduction assembly is arranged on the inner side of the transformer oil tank body, the inflation combustion reduction assembly works to push oxygen in the transformer oil tank body from bottom to top so that the oxygen can be discharged from the air pressure discharging opening, inert gas is supplemented into the transformer oil tank body, the oxygen content in the oil tank is further reduced, and therefore generation of combustible gas is reduced; when the oil temperature rises sharply due to faults in the transformer, the inflation combustion reduction assembly is rapidly started to discharge a high-temperature oil layer and inject nitrogen, and the risks of fire disasters and explosions are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer equipment, and particularly to a transformer oil tank with a rapid self-pressure relief function and its usage method. Background Art

[0002] The transformer oil tank is a key component of a transformer, which provides a protective and supporting space for the iron core, windings, etc. Protected by the sealing structure of the oil tank, it avoids the direct impact of the external environment on the internal components of the transformer. It can not only prevent the direct contact between the internal components of the oil tank and the external environment, but also play a role in electrical insulation, ensuring the safe and reliable operation of the transformer. During the operation of the transformer, the internal pressure of the oil tank will increase due to the high temperature of the internal electrical components and the vaporization of the oil. Therefore, pressure relief is an important means to reduce the internal pressure of the transformer and protect the integrity of the oil tank and its structure.

[0003] The defects of the existing transformer oil tanks are as follows: 1. The patent document CN210429497U discloses a transformer oil tank with high heat dissipation. When this transformer oil tank relieves pressure, it cannot discharge the oxygen in the transformer oil tank body, and the combustible gas increases the energy loss during transmission, which easily leads to an increased risk of fire and explosion.

[0004] 2. The patent document CN219778656U discloses an explosion-proof reinforcement structure for a transformer oil tank and a transformer oil tank. This transformer oil tank cannot clean the oil stains and accumulations near the pressure relief port. The blockage of the pressure relief valve by oil stains and accumulations will cause the internal pressure of the oil tank to continue to rise, leading to safety accidents and unable to ensure the continuous and reliable operation of the transformer.

[0005] 3. The patent document CN111564295B discloses a transformer oil tank convenient for maintenance. When this transformer oil tank relieves pressure, it cannot relieve the gas in the tank synchronously, and the slow pressure relief rate is not conducive to quickly reducing the internal pressure of the transformer in an emergency, and it cannot ensure the stable operation of the power system.

[0006] 4. The patent document CN219393129U discloses a wear-resistant transformer oil tank with a self-pressure relief structure. This transformer oil tank cannot monitor the state of the oil splashing out during the pressure relief process. The splashing out of the oil may mean abnormalities such as a malfunction of the pressure relief valve or excessive internal pressure of the oil tank during the pressure relief process, and it is impossible to analyze the problems during the pressure relief process based on the detection data of the oil splashing out to improve the pressure relief efficiency and safety. Summary of the Invention

[0007] The purpose of the present invention is to provide a transformer oil tank with a rapid self-pressure relief function and its usage method to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A transformer oil tank with a rapid self-pressure relief function, including a transformer oil tank body, a tank cover and an exhaust guide rail. The tank cover is installed on the top of the transformer oil tank body. Pressure relief ports are symmetrically penetrated and opened on the top of the tank cover. An inflation and combustion reduction component is arranged inside the transformer oil tank body; The inflation and combustion reduction component includes an exhaust guide rail, a top air connection plate, a guiding push seat and an air injection nozzle. The exhaust guide rail is installed on the inner wall of the transformer oil tank body. The top air connection plate is installed at the output end of the exhaust guide rail. The guiding push seats are symmetrically installed at the outer ends of the top air connection plate. The air injection nozzle is installed on the top of the guiding push seat.

[0009] Preferably, an inert gas storage frame is installed at the bottom of the guiding push seat, and an intake pipe is installed at the outer end of the inert gas storage frame.

[0010] Preferably, a docking sink is opened on the inner wall of the pressure relief port. A square groove is opened on the inner wall of the docking sink. A pressure relief hand lever is installed inside the square groove. A shielding push plate is installed at the telescopic end of the pressure relief hand lever. Side sliding grooves are symmetrically opened on the inner wall of the pressure relief port, and the outer end of the shielding push plate slides inside the side sliding grooves. A sealing pad is installed at one end of the shielding push plate close to the docking sink.

[0011] Preferably, top discharge ports are symmetrically penetrated and opened on the top of the transformer oil tank body, and the top discharge ports are communicated with the pressure relief ports. An oil leakage detection probe is installed inside the top discharge ports. An oil quality detector is installed on the inner wall of the transformer oil tank body. An oil temperature sensor is installed on the bottom wall of the transformer oil tank body.

[0012] Preferably, a pressure relief port is penetrated and opened at the bottom end of the outer end of the transformer oil tank body. A pressure relief valve is installed outside the pressure relief port. An electrode post is installed on the top of the tank cover.

[0013] Preferably, an inner wall fixing seat is installed on the inner wall of the transformer oil tank body. A lifting cylinder is installed on the top of the inner wall fixing seat. The output end of the lifting cylinder is installed with a sewage connection frame. A feeding hand lever is installed outside the sewage connection frame. The telescopic end of the feeding hand lever is installed with a driving inner column.

[0014] Preferably, driving grooves are symmetrically opened on the outside of the driving inner column. An adapting hand lever is installed inside the driving grooves. The telescopic end of the adapting hand lever is installed with a sewage arc frame. A filling groove is opened on the outside of the sewage arc frame. A cleaning arc pad is installed inside the filling groove. A semi-circular scraping strip is installed on the outside of the driving inner column.

[0015] Preferably, a pressure relief controller is installed on the top of the tank cover, a pressure gauge is installed on the top of the tank cover, and an audible and visual alarm light is installed on the top of the tank cover. The pressure relief controller consists of a pressure relief and air release module, an oxygen removal module, and a pressure relief and dredging module. The pressure relief and air release module is electrically connected to a pressure relief lever, a pressure relief valve, an oil leakage detection probe, a pressure gauge, and an oil level radar sensor. The oxygen removal module is electrically connected to an inflation and combustion reduction component and an external air supply device. The pressure relief and dredging module is electrically connected to a lifting cylinder, a feed lever, and an adaptation lever.

[0016] A usage method of a transformer oil tank with a fast self-pressure relief function, applicable to a transformer oil tank with a fast self-pressure relief function. Preferably, the usage method of the transformer oil tank includes the following steps: Step S1: During the operation of the transformer, due to the high temperature of the internal electrical components and the vaporization of the oil, the pressure inside the transformer oil tank body will increase. The pressure relief valve works to discharge some of the oil, and at the same time, takes away a part of the heat to reduce the overall temperature of the transformer. Step S2: The inflation and combustion reduction component works to push the oxygen inside the transformer oil tank body from bottom to top to discharge it from the pressure relief port, and inert gas is replenished into the transformer oil tank body to further reduce the oxygen content inside the tank. Step S3: The lifting cylinder drives the sewage connection frame to move downward, so that the semi-circular scraping strip at the outer end of the driving inner column pushes and scrapes the oil stains and accumulations near the inner wall of the pressure relief port of the transformer oil tank body.

[0017] Preferably, in the step S1, the following steps are further included: Step S11: The oil level radar sensor detects the oil level inside the transformer oil tank body. After the oil level is lower than the preset oil level, the pressure relief port opens for gas pressure relief. In the step S3, the following steps are further included: Step S31: The feed lever pushes the driving inner column to be located inside the pressure relief port, and then the sewage arc frame moves outward so that the cleaning arc pad cleans the dirt inside the pressure relief port.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention is provided with an inflation and combustion reduction component inside the transformer oil tank. The inflation and combustion reduction component works to push the oxygen inside the transformer oil tank from bottom to top, causing it to be discharged from the pressure relief port. Inert gas is replenished into the transformer oil tank to further reduce the oxygen content inside the tank, thereby reducing the generation of combustible gases. The oxygen-deficient environment can reduce the oxidation of the internal materials of the transformer, thereby improving the electrical conductivity of the materials and reducing the energy loss during transmission, which has a positive effect on improving the overall electrical performance of the transformer. The improvement of the insulation performance of the transformer ensures the stable operation of the power system. When a fault occurs inside the transformer and the oil temperature rises sharply, the inflation and combustion reduction component is quickly activated to discharge the high-temperature oil layer and inject nitrogen. Nitrogen will quickly decompose and absorb a large amount of heat at high temperatures, effectively reducing the risk of fire and explosion.

[0019] 2. The present invention is provided with a semi-circular scraping strip outside the driving inner column. The lifting cylinder drives the sewage connection frame to move downward, so that the semi-circular scraping strip at the outer end of the driving inner column and the cleaning arc pad clean the oil stains and accumulations near the pressure relief port. Cleaning the impurities can ensure that the pressure relief valve can be quickly and smoothly opened when needed, thereby effectively releasing the pressure inside the oil tank. Cleaning the impurities prevents the pressure relief valve from being blocked by oil stains and accumulations, resulting in a continuous increase in the pressure inside the oil tank and triggering a safety accident, improving the overall safety of the transformer. Cleaning the oil stains and accumulations maintains the stability of the insulation performance and heat dissipation performance of the transformer, ensuring that the transformer can operate continuously and reliably.

[0020] 3. The present invention is symmetrically provided with pressure relief ports penetrating through the top of the tank cover. During the pressure relief process of the transformer oil tank, the pressure relief valve works to discharge some oil liquid, which takes away a part of the heat and thus reduces the overall temperature of the transformer. The pressure relief ports are opened for gas pressure relief, and the oil liquid pressure relief and gas pressure relief synchronously accelerate the pressure relief rate, which helps to quickly reduce the internal pressure of the transformer in an emergency and prevent safety accidents caused by excessive pressure. Precise oil level monitoring and pressure relief control ensure the accuracy and reliability of the pressure relief process, which helps to prevent safety accidents caused by too low or too high oil levels. Efficient heat dissipation and pressure relief measures help to maintain the stability of the internal environment of the transformer, thereby improving the overall performance of the equipment, which is of great significance for ensuring the stable operation of the power system and providing high-quality power supply.

[0021] 4. In the present invention, an oil leakage detection probe is installed inside the top discharge port. During the pressure relief process, the oil ejected may splash out, which may cause potential safety hazards such as fire and scalding of personnel. By monitoring the oil ejection situation in real time, problems can be detected and measures can be taken promptly to prevent safety accidents. The oil ejection and splashing may indicate abnormalities such as a malfunction of the pressure relief valve or excessive internal pressure of the fuel tank during the pressure relief process. By detecting the oil ejection situation, it is possible to determine whether the pressure relief is proceeding smoothly, ensure the pressure relief effect, analyze the problems during the pressure relief process based on the detection data of the oil ejection and splashing, improve the pressure relief efficiency and safety, reduce the maintenance cost, and at the same time improve the reliability and availability of the transformer equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a front internal structural schematic diagram of the transformer oil tank of the present invention; Figure 3 is an internal structural schematic diagram of the pressure relief port of the present invention; Figure 4 is an enlarged structural schematic diagram at A of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the inflation and combustion reduction assembly of the present invention; Figure 6 is a connection structural schematic diagram of the driving inner column of the present invention; Figure 7 is an enlarged structural schematic diagram at B of the present invention; Figure 8 is a side internal structural schematic diagram of the driving inner column of the present invention; Figure 9 is a system diagram of the pressure relief controller of the present invention; Figure 10 is a working flow chart of the present invention.

[0023] In the figure: 1. Transformer oil tank; 2. Tank cover; 3. Pressure relief port; 4. Exhaust guide rail; 5. Inner wall fixing seat; 6. Driving inner column; 7. Pressure relief controller; 8. Pressure relief port; 9. Pressure relief valve; 10. Oil quality detector; 11. Oil temperature sensor; 12. Top discharge port; 13. Oil leakage detection probe; 14. Pressure gauge; 15. Acousto-optic alarm lamp; 16. Electrode column; 17. Docking sink; 18. Square groove; 19. Pressure relief hand lever; 20. Shielding push plate; 21. Side chute; 22. Sealing gasket; 23. Top air connection plate; 24. Guiding push seat; 25. Inert gas storage frame; 26. Gas injection nozzle; 27. Inlet pipe; 28. Oil level radar sensor; 29. Lifting cylinder; 30. Sewage connection frame; 31. Feeding hand lever; 32. Driving groove; 33. Adaptation hand lever; 34. Sewage arc frame; 35. Filling groove; 36. Cleaning arc pad; 37. Semi-circular scraping strip. DETAILED DESCRIPTION OF THE INVENTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection or a movable connection, or a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figure 1 、 Figure 2 and Figure 8 , an embodiment provided by the present invention: a transformer oil tank with a fast self-pressure relief function and its usage method; It includes a pressure relief air port 3, a top air connection plate 23 and a guiding push seat 24. Pressure relief air ports 3 are symmetrically penetrated and opened at the top of the tank cover 2. An air inflation and combustion reduction component is arranged inside the transformer oil tank body 1. The air inflation and combustion reduction component includes an exhaust guide rail 4, a top air connection plate 23, a guiding push seat 24 and an air injection nozzle 26. The exhaust guide rail 4 is installed on the inner wall of the transformer oil tank body 1. The top air connection plate 23 is installed at the output end of the exhaust guide rail 4. The guiding push seats 24 are symmetrically installed at the outer ends of the top air connection plate 23. The air injection nozzle 26 is installed at the top of the guiding push seat 24. An inert gas storage frame 25 is installed at the bottom of the guiding push seat 24. An air inlet pipe 27 is installed at the outer end of the inert gas storage frame 25; The pressure relief port 3 ensures the discharge of the gas inside the tank. The exhaust guide rail 4 works to push the oxygen in the transformer oil tank body 1 from bottom to top by the top gas connection plate 23, so that the oxygen is discharged from the pressure relief port 3. Inert gas is supplemented into the transformer oil tank body 1 through the gas injection nozzle 26 to further reduce the oxygen content inside the tank, reduce the generation of combustible gas, and the cooperation of the guiding push seat 24 and the gas injection nozzle 26 forms a circumferential enclosure when the top gas connection plate 23 pushes the oxygen, making the upward discharge of oxygen more thorough. The external gas supply equipment works to transport the inert gas to the inert gas storage frame 25 through the air inlet pipe 27 to ensure rapid response. The anoxic environment can reduce the oxidation of the internal materials of the transformer. When a fault occurs inside the transformer and the oil temperature rises sharply, the gas filling and combustion reduction component quickly starts to discharge the high-temperature oil layer and inject nitrogen, and nitrogen will quickly decompose and absorb a large amount of heat at high temperature; Fire requires the simultaneous presence of three conditions: combustibles, oxygen, and an ignition source. Reducing the oxygen content is equivalent to removing the combustible support, thus greatly improving the safety of the transformer. The anoxic environment can also slow down the aging rate of the internal materials of the transformer, thereby extending the service life of the transformer. Reducing the oxygen content can slow down this process. The anoxic environment can reduce the oxidation rate of the internal materials of the transformer, thereby extending the service life of the insulating materials. The anoxic environment can also reduce the impurities inside the transformer, thereby reducing the noise during the operation of the transformer. Nitrogen can also dilute the oxygen in the air to achieve the effect of suffocating fire. This efficient fire extinguishing mechanism can quickly control the fire and reduce losses.

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 for a transformer oil tank with a fast self-pressure relief function and its usage method; It includes a pressure relief valve 9, a pressure relief port 3, and a shielding push plate 20. A pressure relief opening 8 is penetrated and opened at the outer end bottom of the transformer oil tank body 1. A pressure relief valve 9 is installed outside the pressure relief opening 8. An electrode post 16 is installed on the top of the tank cover 2. A docking sink 17 is opened on the inner wall of the pressure relief port 3. A square groove 18 is opened on the inner wall of the docking sink 17. A pressure relief hand lever 19 is installed inside the square groove 18. A shielding push plate 20 is installed at the telescopic end of the pressure relief hand lever 19. Side sliding grooves 21 are symmetrically opened on the inner wall of the pressure relief port 3, and the outer end of the shielding push plate 20 slides inside the side sliding grooves 21. A sealing pad 22 is installed at one end of the shielding push plate 20 close to the docking sink 17; During the operation of the transformer, due to the high temperature of the internal electrical components and the vaporization of the oil, the pressure inside the transformer oil tank 1 will increase. The pressure relief valve 9 works to discharge some of the oil from the pressure relief port 8, taking away a part of the heat and thus reducing the overall temperature of the transformer. The oil level radar sensor 28 below the gas connection plate 23 detects the oil level in the transformer oil tank 1. When the oil level is lower than the preset oil level, the pressure relief air port 3 opens for gas pressure relief. The square groove 18 provides an installation position for the pressure relief hand lever 19. The pressure relief hand lever 19 drives the shielding push plate 20 to move to achieve the sealing and shielding of the pressure relief air port 3. The side sliding groove 21 ensures the stability of the movement of the shielding push plate 20. The docking sink 17 and the sealing gasket 22 ensure the sealing performance of the shielding push plate 20 in the sealed state. The synchronous oil pressure relief and gas pressure relief accelerate the pressure relief rate, which helps to quickly reduce the internal pressure of the transformer in an emergency. The accurate oil level monitoring and pressure relief control ensure the accuracy and reliability of the pressure relief process.

[0029] Please refer to Figure 1 、 Figure 5 and Figure 6 , a transformer oil tank with a fast self-pressure relief function and its usage method; It includes an oil quality detector 10, an oil temperature sensor 11 and an oil leakage detection probe 13. The top of the tank cover 2 is symmetrically penetrated with a pressure relief air port 3. The top of the transformer oil tank 1 is symmetrically penetrated with a top discharge port 12, and the top discharge port 12 is communicated with the pressure relief air port 3. An oil leakage detection probe 13 is installed inside the top discharge port 12. An oil quality detector 10 is installed on the inner wall of the transformer oil tank 1. An oil temperature sensor 11 is installed on the bottom wall of the transformer oil tank 1; The oil leakage detection probe 13 inside the top discharge port 12 monitors the splashing state of the oil during pressure relief. The oil quality detector 10 detects the quality of the oil in the transformer oil tank 1 to ensure its good performance. The oil temperature sensor 11 detects the oil temperature during pressure relief. The splashing of the oil may pollute the equipment and environment around the transformer, causing corrosion or damage to the equipment. Timely detection and treatment can avoid equipment damage and extend the service life. During the pressure relief process, the spraying and splashing of the oil may cause safety hazards such as fire and scalding of personnel. The spraying and splashing of the oil may mean abnormalities such as a malfunction of the pressure relief valve 9 or excessive internal pressure of the oil tank during the pressure relief process. Detecting the spraying situation of the oil can judge whether the pressure relief is proceeding smoothly, ensure the pressure relief effect, and analyze the problems during the pressure relief process based on the detection data of the spraying and splashing of the oil.

[0030] Please refer to Figure 1 、 Figure 5 and Figure 6 , a transformer oil tank with a fast self-pressure relief function and its usage method; It includes an inner wall fixing seat 5, a sewage connection bracket 30 and a driving inner column 6. An inner wall fixing seat 5 is installed on the inner wall of the transformer oil tank body 1. A lifting cylinder 29 is installed on the top of the inner wall fixing seat 5. The output end of the lifting cylinder 29 is installed with a sewage connection bracket 30. A feeding hand lever 31 is installed on the outside of the sewage connection bracket 30. The telescopic end of the feeding hand lever 31 is installed with a driving inner column 6. Driving grooves 32 are symmetrically arranged on the outside of the driving inner column 6. An adapting hand lever 33 is installed on the inner side of the driving groove 32. The telescopic end of the adapting hand lever 33 is installed with a sewage arc bracket 34. A filling groove 35 is arranged on the outside of the sewage arc bracket 34. A cleaning arc pad 36 is installed on the inner side of the filling groove 35. A semi-circular scraping strip 37 is installed on the outside of the driving inner column 6; The inner wall fixing seat 5 provides an installation position for the lifting cylinder 29 and ensures its stability during operation. The sewage connection bracket 30 provides an installation position for the feeding hand lever 31 and ensures the stability of the driving inner column 6 during movement. The lifting cylinder 29 drives the sewage connection bracket 30 to move downward, so that the semi-circular scraping strip 37 at the outer end of the driving inner column 6 pushes and scrapes the oil stains and accumulations near the inner wall of the pressure relief port 8 of the transformer oil tank body 1. After the feeding hand lever 31 pushes the driving inner column 6 to be located inside the pressure relief port 8, the adapting hand lever 33 in the driving groove 32 axially drives the sewage arc bracket 34. The sewage arc bracket 34 moves outward so that the cleaning arc pad 36 abuts against the inner wall of the pressure relief port 8 to clean the dirt inside the pressure relief port 8; Cleaning impurities can ensure that the pressure relief valve 9 can be opened quickly and smoothly when needed, effectively releasing the pressure in the fuel tank. Cleaning impurities prevents the pressure relief valve 9 from being blocked by oil stains and accumulations, resulting in a continuous increase in the pressure in the fuel tank and triggering safety accidents. Long-term accumulated oil stains and accumulations may corrode or wear the pressure relief valve 9, shortening its service life. Regular cleaning can keep the pressure relief valve 9 in good condition, extend its service life, thereby reducing the cost of replacement and maintenance. Oil stains and accumulations may cause the pressure relief valve 9 to fail or malfunction, leading to bigger problems. Regular cleaning can prevent the occurrence of such failures and reduce the downtime and maintenance costs caused by the failures.

[0031] Please refer to Figure 1 、 Figure 5 and Figure 6 for a transformer oil tank with a fast self-pressure relief function and its usage method; It includes a tank cover 2 and a pressure relief controller 7. A pressure relief controller 7 is installed on the top of the tank cover 2. A pressure gauge 14 is installed on the top of the tank cover 2. An audible and visual alarm lamp 15 is installed on the top of the tank cover 2. The pressure relief controller 7 consists of a pressure relief and air release module, an oxygen removal module and a pressure relief and dredging module. The pressure relief and air release module is electrically connected to a pressure relief hand lever 19, a pressure relief valve 9, an oil leakage detection probe 13, a pressure gauge 14 and an oil level radar sensor 28. The oxygen removal module is electrically connected to an inflation and combustion reduction component and an external air supply device. The pressure relief and dredging module is electrically connected to a lifting cylinder 29, a feeding hand lever 31 and an adapting hand lever 33; The pressure gauge 14 detects the pressure inside the transformer oil tank 1. When the pressure remains high after the liquid and gas are depressurized, the audible and visual alarm lamp 15 works to warn the staff. The depressurization controller 7 integrates and drives the control of the oil leakage detection probe 13, the pressure gauge 14, the oil level radar sensor 28, the depressurization hand lever 19, the pressure relief valve 9, the inflation and combustion reduction component, the external air supply device, the lifting cylinder 29, the feed hand lever 31, and the adaptive hand lever 33 to achieve the best rapid depressurization effect.

[0032] The usage method of this transformer oil tank includes the following steps: Step S1: During the operation of the transformer, due to the high temperature of the internal electrical components and the vaporization of the oil, the pressure inside the transformer oil tank 1 will increase. The pressure relief valve 9 works to discharge some of the oil, and at the same time takes away part of the heat to reduce the overall temperature of the transformer. Step S2: The inflation and combustion reduction component works to push the oxygen inside the transformer oil tank 1 from bottom to top so that it is discharged from the pressure relief port 3, and inert gas is replenished into the transformer oil tank 1 to further reduce the oxygen content inside the tank. Step S3: The lifting cylinder 29 drives the sewage connection frame 30 to move downward, so that the semi-circular scraping strip 37 at the outer end of the driving inner column 6 pushes and scrapes the oil stains and accumulations near the inner wall of the pressure relief port 8 of the transformer oil tank 1.

[0033] In step S1, the following steps are also included: Step S11: The oil level radar sensor 28 detects the oil level inside the transformer oil tank 1. After the oil level is lower than the preset oil level, the pressure relief port 3 is opened for gas depressurization. In step S3, the following steps are also included: Step S31: The feed hand lever 31 pushes the driving inner column 6 to be located inside the pressure relief port 8, and then the sewage arc frame 34 moves outward so that the cleaning arc pad 36 cleans the dirt inside the pressure relief port 8.

[0034] Working principle: When using this device, first, during the operation of the transformer, due to the high temperature of the internal electrical components and the vaporization of the oil, the pressure inside the transformer oil tank 1 will increase. The pressure relief valve 9 works to discharge some of the oil, and at the same time takes away part of the heat to reduce the overall temperature of the transformer. The oil level radar sensor 28 detects the oil level inside the transformer oil tank 1. After the oil level is lower than the preset oil level, the pressure relief port 3 is opened for gas depressurization. The inflation and combustion reduction component works to push the oxygen inside the transformer oil tank 1 from bottom to top so that it is discharged from the pressure relief port 3, and inert gas is replenished into the transformer oil tank 1 to further reduce the oxygen content inside the tank. The lifting cylinder 29 drives the sewage connection frame 30 to move downward, so that the semi-circular scraping strip 37 at the outer end of the driving inner column 6 pushes and scrapes the oil stains and accumulations near the inner wall of the pressure relief port 8 of the transformer oil tank body 1. After the feeding hand lever 31 pushes the driving inner column 6 to be located inside the pressure relief port 8, the sewage arc frame 34 moves outward, so that the cleaning arc pad 36 cleans the dirt inside the pressure relief port 8.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A transformer oil tank with a rapid self-decompression function, comprising a transformer oil tank body (1), a tank cover (2) and an exhaust guide rail (4), characterized in that: A box cover (2) is installed on the top of the transformer oil box (1), and a pressure relief port (3) is symmetrically opened through the top of the box cover (2), and an air charging and combustion reduction component is arranged on the inner side of the transformer oil box (1); The gas charging and combustion reduction assembly comprises an exhaust rail (4), a top gas connection plate (23), a guide push seat (24) and an air injection nozzle (26); the exhaust rail (4) is mounted on the inner wall of the transformer oil tank (1); the top gas connection plate (23) is mounted on the output end of the exhaust rail (4); the guide push seat (24) is symmetrically mounted on the outer end of the top gas connection plate (23); and the air injection nozzle (26) is mounted on the top of the guide push seat (24).

2. The transformer oil tank with rapid self-pressure relief function according to claim 1, characterized in that: An inert gas storage frame (25) is installed at the bottom of the guide push seat (24), and an air inlet pipe (27) is installed at the outer end of the inert gas storage frame (25).

3. The transformer oil tank with rapid self-depressurization function according to claim 1, characterized in that: The inner wall of the air relief pressure port (3) is provided with a docking groove (17), the inner wall of the docking groove (17) is provided with a square groove (18), a pressure relief hand lever (19) is installed on the inner side of the square groove (18), a shielding push plate (20) is installed on the telescopic end of the pressure relief hand lever (19), side sliding grooves (21) are symmetrically opened on the inner wall of the air relief pressure port (3), and the outer end of the shielding push plate (20) slides on the inner side of the side sliding groove (21), and a sealing gasket (22) is installed on one end of the shielding push plate (20) close to the docking groove (17).

4. The transformer oil tank with rapid self-depressurization function according to claim 1, characterized in that: A top discharge port (12) is symmetrically formed through the top of the transformer oil tank (1), and the top discharge port (12) is in communication with the air pressure relief port (3). An oil leakage detection probe (13) is installed on the inner side of the top discharge port (12), an oil quality detector (10) is installed on the inner wall of the transformer oil tank (1), and an oil temperature sensor (11) is installed on the bottom wall of the transformer oil tank (1).

5. The transformer oil tank with rapid self-depressurization function according to claim 1 is characterized in that: A pressure relief port (8) is provided through the bottom of the outer end of the transformer oil tank body (1), a pressure relief valve (9) is installed outside the pressure relief port (8), and an electrode column (16) is installed on the top of the tank cover (2).

6. The transformer oil tank with rapid self-depressurization function according to claim 1, characterized in that: An inner wall fixing seat (5) is installed on the inner wall of the transformer oil tank body (1), a lifting cylinder (29) is installed on the top of the inner wall fixing seat (5), a sewage discharge frame (30) is installed on the output end of the lifting cylinder (29), a feed hand lever (31) is installed on the outer side of the sewage discharge frame (30), and a driving inner column (6) is installed on the telescopic end of the feed hand lever (31).

7. The transformer oil tank with rapid self-pressure relief function according to claim 6, characterized in that: The driving inner column (6) is symmetrically provided with a driving groove (32), an adaptable hand lever (33) is installed on the inner side of the driving groove (32), a sewage arc frame (34) is installed on the telescopic end of the adaptable hand lever (33), a filling groove (35) is provided on the outer side of the sewage arc frame (34), a cleaning arc pad (36) is installed on the inner side of the filling groove (35), and a semicircular scraper (37) is installed on the outer side of the driving inner column (6).

8. The transformer oil tank with rapid self-pressure relief function according to claim 1, characterized in that: A pressure relief controller (7) is installed on the top of the box cover (2), a pressure gauge (14) is installed on the top of the box cover (2), and an audible and visual alarm lamp (15) is installed on the top of the box cover (2). The pressure relief controller (7) consists of a pressure relief and air release module, an oxygen removal module and a pressure relief and dredging module. The pressure relief and air release module is electrically connected to a pressure relief lever (19), a pressure relief valve (9), an oil leakage detection probe (13), a pressure gauge (14) and an oil level radar sensor (28). The oxygen removal module is electrically connected to an air charging and decompression component and an external air supply device. The pressure relief and dredging module is electrically connected to a lifting cylinder (29), a feed lever (31) and an adaption lever (33).

9. A method for using a transformer oil tank with a rapid self-pressure relief function, applicable to a transformer oil tank with a rapid self-pressure relief function as claimed in any one of claims 1 to 8, characterized in that: The method for using the transformer oil tank comprises the following steps: Step S1: During the operation of the transformer, the high temperature of the internal electrical components and the vaporization of the oil will cause the internal pressure of the transformer oil tank (1) to increase, and the pressure relief valve (9) will work to release part of the oil and take away part of the heat, thereby reducing the overall temperature of the transformer; Step S2, the gas charging and combustion reduction component works from bottom to top to push the oxygen in the transformer oil tank (1) to discharge it from the air relief port (3), and inert gas is added into the transformer oil tank (1) to further reduce the oxygen content inside the oil tank; Step S3: The lifting cylinder (29) drives the sewage discharge frame (30) to move downward so that the semicircular scraper (37) at the outer end of the driving inner column (6) pushes and scrapes away the oil stains and accumulated materials near the inner wall of the pressure relief port (8) of the transformer oil tank body (1).

10. The method for using a transformer oil tank with a rapid self-pressure relief function according to claim 9, characterized in that: In the step S1, the following steps are also included: Step S11, the oil level radar sensor (28) detects the oil level in the transformer oil tank (1), and when the oil level is lower than a preset oil level, the air pressure relief port (3) is opened to relieve gas pressure; In step S3, the following steps are also included: Step S31, the feeding hand lever (31) pushes the driving inner column (6) to be located inside the pressure relief port (8), and then the sewage arc frame (34) moves outward to allow the cleaning arc pad (36) to clean the dirt inside the pressure relief port (8).

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