Transformer oil tank with protection function and use method thereof

Abstract

The invention discloses a transformer oil tank with a protection function and a use method thereof, and relates to the technical field of transformer oil tanks, the transformer oil tank comprises an oil tank body, a tank cover and protection assemblies, the tank cover is fixedly mounted at the top end of the outer wall of the oil tank body through bolts, and the protection assemblies are fixedly mounted on the outer walls of the oil tank body and the tank cover; the protection assembly comprises a drainage groove, a waterproof partition plate and an isolation valve, the drainage groove is fixedly installed on the periphery of the outer wall of the oil tank body in a clamping groove mode, the waterproof partition plate is fixedly installed at the top end of the outer wall of the drainage groove, a floating rod is fixedly installed at the top end of the outer wall of the waterproof partition plate, and the isolation valve is fixedly installed at the top end of the outer wall of the floating rod through a connecting rod. The double functions of effective protection and efficient heat dissipation on the transformer oil tank under water quality disasters are achieved, the problem that the transformer is prone to being interfered by external factors and damaged in a complex operation environment is solved, damage of severe environmental factors to the oil tank is effectively resisted, and the operation safety of the transformer is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer oil tanks, in particular to a transformer oil tank with a protective function and a use method thereof. Background Art

[0002] With the continuous development of society and the economy, the demand for electricity in various industries continues to rise. As a key device for power transmission and distribution, the use of transformers has also increased accordingly, and the demand for transformer tanks has also risen accordingly. They must have higher performance and reliability to ensure the stable operation of the power system. The design and manufacturing process of transformer tanks must fully consider factors such as reducing energy consumption, reducing noise pollution, and improving material recyclability to meet the needs of sustainable development. The development of intelligent society is driving the transformation of power equipment in this direction. As a key component of transformers, transformer tanks also need to have corresponding intelligent functions.

[0003] In some high-load operation or high ambient temperature conditions, traditional heat dissipation methods may not be able to meet the heat dissipation needs of the transformer, resulting in excessively high oil temperature, affecting the performance and life of the transformer. There is currently a lack of effective early warning and protection mechanisms to avoid such situations, resulting in higher risks for transformers near construction areas.

[0004] Therefore, it is very necessary to propose a transformer oil tank with protective function and a method of using the same in this application to solve the problems in the background.

[0005] Patent document CN116864270B discloses a transformer oil tank with an oil cleaning structure and a method of using the same. The above patent realizes that a movable frame is connected to a threaded connection sleeve through a connecting rod, so that when the threaded screw rotates, the threaded connection sleeve moves downward and drives the movable frame to move, completing the cleaning of the oil accumulated on the inner wall of the transformer oil tank body by the cleaning pad, making the cleaning of the oil accumulated on the transformer oil tank body simpler and more convenient, but the above patent cannot achieve the dual functions of effective protection of the transformer oil tank under water disasters and efficient heat dissipation.

[0006] Patent document CN116913658B discloses a transformer oil tank with good noise reduction effect and a method of using the same. The above patent realizes the function of detecting the vibration amplitude of the vibration noise source in the oil tank, but the above patent cannot realize remote real-time monitoring of the operating status of the transformer oil tank.

[0007] Patent document CN116959852B discloses a transformer oil tank with accelerated heat dissipation and a method of using the same. The above patent realizes that an anti-deformation cylinder is installed on the inner side of a fixed frame. When the oil tank body is deformed due to high temperature, the anti-deformation cylinder supports the front of the oil tank body. The pressure contact sensor is against the front of the oil tank body. When the deformation pressure of the oil tank body reaches the preset maximum value of the pressure contact sensor, the electric telescopic rod pushes the sliding frame, and changes the extended length of the sliding frame in the anti-deformation cylinder to realize the anti-deformation support of the oil tank body by the placement frame, and buffers the deformation to extend the service life of the transformer oil tank. However, the above patent cannot realize the automatic discharge of water accumulated in the transformer oil tank.

[0008] Patent document CN115831547B discloses a transformer oil tank with a protective structure. The above patent realizes protection of the corrugated heat sink to facilitate transportation or disassembly and maintenance of the transformer oil tank, but the above patent cannot prevent the intrusion of external foreign objects.

[0009] In summary, the above patents cannot achieve remote real-time monitoring of the transformer tank's operating status, automatic drainage of accumulated water in the transformer tank, effective protection against the intrusion of foreign objects from outside the transformer, and efficient heat dissipation. As a result, the transformer is susceptible to damage due to external interference in a complex operating environment. Traditional manual inspections are time-sensitive, data acquisition is delayed, and wiring is difficult, resulting in a decline in transformer insulation performance or even failure. To this end, the present application proposes a transformer oil tank and its use method that can realize remote real-time monitoring of the operating status of the transformer oil tank, automatic discharge of water accumulated in the transformer oil tank, effective protection against the intrusion of foreign objects outside the transformer, and efficient heat dissipation. Summary of the Invention

[0010] The object of the present invention is to provide a transformer oil tank with protective function and a method for using the same, so as to solve the technical problems raised in the above-mentioned background technology, such as the inability to realize remote real-time monitoring of the operating status of the transformer oil tank, automatic discharge of accumulated water in the transformer oil tank, effective protection against the intrusion of external foreign objects into the transformer, and efficient heat dissipation, resulting in the transformer being easily damaged by external factors in a complex operating environment, poor timeliness of traditional manual inspections, untimely data acquisition, difficulty in wiring, and degradation of transformer insulation performance or even failure.

[0011] To achieve the above-mentioned object, the present invention provides the following technical solution: a transformer oil tank with a protective function, comprising an oil tank body, a tank cover, and a protective assembly, wherein the tank cover is fixedly mounted on the top of the outer wall of the oil tank body by bolts, and the protective assembly is fixedly mounted on the outer wall of the oil tank body and the outer wall of the tank cover; The protection assembly includes a drainage trough, a waterproof baffle and an isolation valve. The drainage trough is fixedly installed around the outer wall of the fuel tank body by a slot-type clamping method. The waterproof baffle is fixedly installed on the top of the outer wall of the drainage trough. The top of the outer wall of the waterproof baffle is fixedly installed on the top of the outer wall of the floating rod. The isolation valve is fixedly installed on the top of the outer wall of the floating rod through a connecting rod. The isolation valve is fixedly installed on the top of the outer wall of the tank cover by bolts. A heat dissipation pipe is fixedly installed on the side of the outer wall of the isolation valve. The heat dissipation pipe is connected to the hot end of the thermocouple through a thermal conductive silicone pad. The cold end of the thermocouple is fixedly installed on the side of the heat source.

[0012] Preferably, a vent is provided at the bottom of the side of the outer wall of the fuel tank body, a wireless transmitter module is fixedly installed on the side of the inner wall of the fuel tank body where the vent is installed, a signal output port is fixedly installed at the bottom of the outer wall of the wireless transmitter module, an insect-proof net is fixedly installed on the front of the outer wall of the vent, the edge of the insect-proof net is coated with sealant, and an electrostatic generator is fixedly installed on the edge frame of the insect-proof net; The output end of the electrostatic generator is connected to the cathode of the voltage detection element, the anode of the voltage detection element is connected to the gate of the thyristor, the anode of the thyristor is connected to the output end of the electrostatic generator, the thyristor is connected in parallel with a small resistance resistor, port 1 of the signal output port is connected to both ends of the small resistor, port 2 of the signal output port is connected to both ends of the large resistor, and the large resistor and the voltage detection element are connected in series to form a branch.

[0013] Preferably, the fuel tank body is designed as a multi-layer structure, the inner layer is a steel plate, the middle layer is an anti-corrosion coating, and the outer layer is a high-temperature resistant material. A detection component is arranged inside the fuel tank body, and the monitoring component includes a temperature sensor, a humidity sensor and an ultrasonic sensor. The outer walls of the low-voltage iron core column and the high-voltage iron core column are fixedly installed with temperature sensors and humidity sensors. The temperature sensor and humidity sensor are connected to the wireless transmission module through a data cable, and the data cable runs through the outer wall of one side of the fuel tank body.

[0014] Preferably, the outer wall of the wireless transmitting module is packaged with a shielding cover, the shielding cover is connected to the grounding terminal of the transformer through a grounding wire, the seams of the shielding cover are filled with an electromagnetic sealing gasket, the power amplifier output end of the wireless transmitting module is connected to the variable attenuator, and an intelligent power management chip is fixedly installed on the printed circuit board adjacent to the wireless transmitting module, and the power input end and control pin of the wireless transmitting module are connected to the intelligent power management chip through wires.

[0015] Preferably, thermal conductive glue is filled between the shielding cover and the tank body, one side of the top of the outer wall of the tank body is set as a section, a pressure sensor is fixedly installed on the section, the pressure sensor is in close contact with the outer wall of the tank body through a sealing gasket, a signal conditioning board is fixedly installed on the top of the outer wall of the pressure sensor, and a transparent cover is fixedly installed on the outer wall of the pressure sensor and the signal conditioning board.

[0016] Preferably, a battery box is fixedly installed at the bottom of the edge of the vent, an independent battery is placed inside the battery box, a battery management system is integrated inside the independent battery, and the independent battery is connected to the electrostatic generator and the No. 3 port of the signal output port through a data cable.

[0017] Preferably, an oil filling port is provided at the top of the outer wall of the oil tank body, a filling sleeve is fixedly installed at the top of the outer wall of the oil filling port, a base plate is fixedly installed at the bottom of the outer wall of the oil tank body by bolts, and mounting holes are provided at the corners of the base plate; A filter is fixed at the inlet of the drainage trough by bolts, a clamp is fixed at the bottom end of the outer wall of the drainage trough by bolts, and shock-absorbing rings are surrounded at both ends of the side of the outer wall of the fuel tank body.

[0018] Preferably, the output end of the pressure sensor is connected to the positive input end of the threshold judgment unit through a data line, the negative input end of the threshold judgment unit is connected to a reference voltage line, and the output end of the threshold judgment unit is connected to a buzzer.

[0019] Preferably, the method of use comprises the following steps: S1: Check the integrity of the fuel tank body to ensure that the inner steel plate is intact, the middle anti-corrosion coating is evenly distributed and not peeling, and the outer high-temperature resistant material is free of cracks. Calibrate and test the temperature sensor, humidity sensor, ultrasonic sensor, and pressure sensor. Check the insect screen at the vent to ensure it is securely installed and the sealant is intact. S2 Fix the base plate to the predetermined foundation platform through the mounting holes to ensure that it is firmly and levelly installed; S3 lifts the fuel tank body and places it on the base plate. Connect the fuel tank body and the base plate tightly with bolts. Install shock-absorbing rings on both ends of the outer wall of the fuel tank body and install new batteries in the battery box. S4 fixes the tank cover to the top of the outer wall of the fuel tank body with bolts, and installs the filling sleeve at the oil filling port.

[0020] Preferably, the method of use further comprises the following steps: The S5 injects transformer oil into the tank through the oil filling port. It also monitors the temperature, humidity, and partial discharge inside the tank in real time using temperature sensors, humidity sensors, and ultrasonic sensors. The sensor data is transmitted via a data cable to the wireless transmitter module, which then sends the data to the monitoring center for remote monitoring by maintenance personnel. When the wireless transmitter module is in operation, the shielding cover is grounded via a grounding wire. The seams of the shielding cover are filled with electromagnetic sealing gaskets to reduce electromagnetic interference. A variable attenuator at the output of the power amplifier adjusts the signal strength, and an intelligent power management chip manages the power supply to the wireless transmitter module. The accumulated water outside the S6 fuel tank flows into the drainage trough and contacts the waterproof baffle. The rising water level drives the float rod up, which drives the isolation valve through the connecting rod to prevent the accumulated water from getting closer to the tank cover and the top of the fuel tank body, thus protecting the fuel tank from flooding. The S7 heat pipe transfers the heat in the fuel tank to the thermocouple through the thermal conductive silicone pad to monitor the heat dissipation; The S8 vents ensure air circulation inside the fuel tank, while the insect screen prevents insects and foreign objects from entering the tank. An electrostatic generator charges the screen, and when foreign objects contact the screen, the voltage changes. A circuit consisting of a voltage detection element and a thyristor causes the signal output port to output a warning signal, alerting maintenance personnel that the screen needs to be cleaned. The S9 pressure sensor monitors the pressure on the top of the outer wall of the fuel tank in real time. The output signal of the pressure sensor is transmitted to the threshold judgment unit. When the pressure exceeds the set threshold, the threshold judgment unit triggers the buzzer to sound an alarm, reminding the operation and maintenance personnel to pay attention to the fuel tank pressure. S10 Test the working condition of the isolation valve and radiator pipe every week, check the accumulation of debris in the drain tank, clean the filter, check the flexibility and reliability of the waterproof partition, float rod, connecting rod and isolation valve, and replace them immediately if any damage occurs; S11 Check the integrity of the insect screens at the ventilation openings and clean any dust and debris from them.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention achieves the dual functions of effective protection of the transformer oil tank during water disasters and efficient heat dissipation through the protective assembly and heat pipe. This solves the problem of transformers being easily damaged by external factors in complex operating environments, effectively prevents damage to the oil tank from harsh environmental factors, and greatly improves the safety and stability of transformer operation. 2. The present invention uses detection components and wireless transmission modules to achieve remote real-time monitoring of the operating status of the transformer tank, solving the problems of poor timeliness, delayed data acquisition, and wiring difficulties in traditional manual inspections. It can detect partial discharge in a timely manner and reduce wiring costs and difficulties. 3. This invention uses an insect-proof net and voltage detection element to effectively protect the transformer from external foreign objects and accurately monitor the internal electrical insulation status. This solves the problem of short-circuit faults caused by insects and other small animals entering the transformer oil tank and the difficulty in detecting insulation performance degradation in advance. It significantly reduces the incidence of transformer failures caused by foreign objects and improves the reliability and stability of power system operation. 4. The present invention realizes the automatic drainage of water accumulated in the transformer oil tank through the drainage trough and the float rod, solves the problem of transformer insulation performance degradation or even failure caused by excessive water accumulation, and improves the safety of the entire power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front view of the transformer oil tank of the present invention; Figure 2 This is a schematic diagram of the front structure of the transformer oil tank of the present invention; Figure 3 This is a structural diagram of the sound warning part of the present invention; Figure 4 Schematic diagram of the structure of the threshold judgment unit of the present invention; Figure 5 It is a partial structural schematic diagram of the heat dissipation component of the present invention; Figure 6 This is a partial structural diagram of the wireless transmission module of the present invention; Figure 7 It is a partial structural diagram of the protection component of the present invention; Figure 8 It is a partial structural diagram of the monitoring component of the present invention.

[0023] Figure: 1, fuel tank body; 2, tank cover; 3, shock-absorbing ring; 4, base plate; 5, mounting hole; 6, oil filling port; 7, filling sleeve; 8, vent; 9, insect screen; 10, static generator; 11, voltage detection element; 12, thyristor; 13, wireless transmitter module; 14, signal output port; 15, shielding cover; 16, electromagnetic sealing gasket; 17, variable attenuator; 18, intelligent power management chip; 19, battery box; 2 0. Drain trough; 21. Float rod; 22. Connecting rod; 23. Isolation valve; 24. Waterproof partition; 25. Clamp; 26. Thermocouple; 27. Heat pipe; 28. Thermal conductive silicone pad; 29. Pressure sensor; 30. Sealing gasket; 31. Signal conditioning board; 32. Transparent cover; 33. Threshold judgment unit; 34. Buzzer; 35. Reference voltage line; 36. Ultrasonic sensor; 37. Temperature sensor; 38. Humidity sensor. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] See also Figure 1 、 Figure 5 and Figure 7 , the present invention provides an embodiment: a transformer oil tank with a protective function, comprising an oil tank body 1, a tank cover 2 and a protective assembly, wherein the tank cover 2 is fixedly installed on the top of the outer wall of the oil tank body 1 by bolts, and the outer walls of the oil tank body 1 and the tank cover 2 are fixedly installed with a protective assembly; the protective assembly comprises a drainage trough 20, a waterproof partition 24 and an isolation valve 23, the drainage trough 20 is fixedly installed on the outer wall of the oil tank body 1 by a card slot type, the outer wall top of the drainage trough 20 is fixedly installed with a waterproof partition 24, the outer wall top of the waterproof partition 24 is fixedly installed with a floating rod 21, the outer wall top of the floating rod 21 is fixedly installed with an isolation valve 23 through a connecting rod 22, and the isolation valve 23 is fixedly installed on the top of the outer wall of the tank cover 2 by bolts; a heat dissipation pipe 27 is fixedly installed on the side of the outer wall of the isolation valve 23, the heat dissipation pipe 27 is connected to the hot end of the thermocouple 26 through a thermal conductive silicone pad 28, and the cold end of the thermocouple 26 is fixedly installed on the side of the heat source; The method of use comprises the following steps: S1 checking the integrity of the fuel tank body 1, ensuring that the inner steel plate is not damaged, the middle anti-corrosion coating is uniform and not peeling, and the outer high-temperature resistant material is free of cracks, calibrating and testing the temperature sensor 37, the humidity sensor 38, the ultrasonic sensor 36 and the pressure sensor 29, and checking the insect screen 9 at the vent 8 to ensure that it is firmly installed and the sealant is not damaged; S2 fixing the base plate 4 on the predetermined base platform through the mounting hole 5 to ensure that it is firmly installed and level; S3 lifting the fuel tank body 1 and placing it on the base plate 4, tightly connecting the fuel tank body 1 and the base plate 4 with bolts, installing shock-absorbing rings 3 at both ends of the outer wall side of the fuel tank body 1, and installing new batteries in the battery box 19; S4 fixing the tank cover 2 to the top of the outer wall of the fuel tank body 1 with bolts, and installing the filling sleeve 7 at the oil filling port 6; Furthermore, the oil tank body 1 is made of Q345 low-alloy steel with a steel plate thickness of 8mm, which can withstand high internal pressure and external impact. It is 3000mm long, 1500mm wide, and 2000mm high, with an internal volume of approximately 9000 liters, which can meet the oil storage needs of a 1000kVA transformer. The inner layer is a 0.5mm thick epoxy resin anti-corrosion coating, which is evenly applied to prevent the oil tank body from being corroded by transformer oil and the external environment; the outer layer is a 5mm thick high-temperature fire-resistant coating that can withstand high temperatures of 1000℃ for 2 hours, effectively preventing external fire sources from damaging the oil tank; The tank cover 2 is made of the same Q345 low alloy steel as the tank body, with a thickness of 6mm, a length of 3050mm, and a width of 1550mm. It fits well with the top of the tank body 1 and is fixed with 20 M20 high-strength bolts. The bolt spacing is evenly distributed. The drainage groove 20 is made of 304 stainless steel with a U-shaped cross-section, a width of 100mm, and a depth of 80mm. It is fixed along the outer wall of the tank body 1 with a groove type of 5mm in depth and 105mm in width. After installation, the drainage groove 20 fits tightly with the tank body 1. The bottom of the drainage groove 20 is provided with a drainage The holes have a diameter of 20 mm and a hole spacing of 500 mm. The waterproof partition 24 is made of polyvinyl chloride plastic plate with a thickness of 10 mm, a length of 2900 mm and a width of 1400 mm. It is installed on the top of the outer wall of the drainage trough 20 and is 50 mm higher than the edge of the drainage trough 20. The floating rod 21 uses a lightweight aluminum alloy rod with a diameter of 20 mm and a length of 500 mm. It can float in the water and move up and down with changes in the water level. The floating rod 21 is fixed to the waterproof partition 24 through a slot with a width of 22 mm and a depth of 30 mm to ensure that the floating rod can move stably in the vertical direction. Place the base plate 4 on the predetermined foundation platform and determine the installation position according to the markings on the foundation platform. Use a spirit level to check the levelness of the base plate and adjust the position of the base plate to ensure that the levelness deviation is within ±0.5 mm / m. Use M20 high-strength bolts to secure the base plate to the foundation platform through the eight 20 mm diameter mounting holes 5. The tightening torque of the bolts is 400 N m. Ensure that the base plate is securely installed and level. Fix the tank cover 2 to the top of the outer wall of the fuel tank body 1 with 20 M20 bolts. The tightening torque of the bolts is 450N·m. Apply thread sealant to the bolt threads during installation to prevent the bolts from loosening and oil leakage. During the installation of the tank cover 2, pay attention to the correct installation position of the sealing gasket. The sealing gasket is made of oil-resistant rubber and has a thickness of 5mm. Tightly connect the lower end of the filling sleeve 7 with the oil filling port 6 and fix it with 4 M8 bolts. The tightening torque of the bolts is 10N·m.

[0028] See also Figure 1 、 Figure 5 and Figure 6 An embodiment of the present invention provides: a transformer oil tank with a protective function, wherein a vent 8 is opened at the bottom of the side of the outer wall of the oil tank body 1, a wireless transmitter module 13 is fixedly installed on the side of the inner wall of the oil tank body 1 where the vent 8 is installed, a signal output port 14 is fixedly installed at the bottom of the outer wall of the wireless transmitter module 13, an insect-proof net 9 is fixedly installed on the front of the outer wall of the vent 8, the edge of the insect-proof net 9 is coated with sealant, and an electrostatic generator 10 is fixedly installed on the edge frame of the insect-proof net 9; the output end of the electrostatic generator 10 is connected to the cathode of the voltage detection element 11, the anode of the voltage detection element 11 is connected to the gate of the thyristor 12, the anode of the thyristor 12 is connected to the output end of the electrostatic generator 10, the thyristor 12 is connected in parallel with a small resistance resistor, the first port of the signal output port 14 is connected to the two ends of the small resistor, the second port of the signal output port 14 is connected to the two ends of the large resistor, and the large resistor and the voltage detection element 11 are connected in series to form a branch; A battery box 19 is fixedly installed at the bottom edge of the vent 8. An independent battery is placed inside the battery box 19. The independent battery has an integrated battery management system. The independent battery is connected to the electrostatic generator 10 and the third port of the signal output port 14 via a data cable. Furthermore, the fuel tank body 1 is made of high-quality carbon steel Q235B, with a steel plate thickness of 6mm, a length of 2500mm, a width of 1200mm, a height of 1800mm, and a capacity of approximately 5400 liters, suitable for a 630kVA transformer. After the outer wall of the fuel tank is sandblasted and rust-removed, a layer of epoxy zinc-rich primer is first applied with a thickness of approximately 80μm, and then two layers of polyurethane topcoat are applied, each layer of which is approximately 50μm thick. The vents 8 are 200mm long and 150mm wide, with a total of two being provided, located on opposite sides of the bottom of the outer wall of the fuel tank body 1 to ensure good air circulation inside the tank. The edges of the vents 8 are reinforced with a 3mm thick stainless steel frame, which is connected to the fuel tank body 1 by welding. The insect screen 9 is woven from 304 stainless steel wire with a 20-mesh opening, effectively preventing insects and other foreign matter from entering the fuel tank while ensuring unimpeded ventilation. The stainless steel frame around the edge of the insect screen 9 is 20mm wide and 2mm thick. It is secured to the vent frame 8 with rivets spaced 30mm apart and evenly spaced to ensure a secure connection. Oil-resistant silicone sealant is applied with a 5mm width and approximately 2mm thickness to ensure a seamless gap between the insect screen 9 and the vent frame 8, preventing the ingress of dust and moisture. The electrostatic generator 10 generates an electrostatic field. When foreign objects such as insects approach the insect-proof net 9 and come into contact with the electrostatic field, the cathode voltage of the voltage detection element 11 will change. When the voltage change reaches the trigger threshold of the thyristor 12, the thyristor is turned on, and the voltage across the small resistance resistor changes. This change signal is transmitted to the wireless transmission module 13 through port 1 of the signal output port 14. At the same time, the current in the branch connected in series with the large resistor and the voltage detection element 11 will also change, and the corresponding signal will be transmitted to the wireless transmission module 13 through port 2 of the signal output port 14. The wireless transmission module 13 processes the received signal and sends it to the remote monitoring center so that the operation and maintenance personnel can promptly understand the abnormal situation at the vent 8 and take corresponding measures. The independent battery in the battery box 19 continuously powers the entire system. The battery management system monitors the battery status in real time and ensures safe and stable power supply.

[0029] See also Figure 1 、 Figure 2 、 Figure 6 and Figure 8 The present invention provides an embodiment of a transformer oil tank with a protective function, wherein the oil tank body 1 is designed as a multi-layer structure, the inner layer is a steel plate, the middle layer is an anti-corrosion coating, and the outer layer is a high-temperature resistant material. A detection component is provided inside the oil tank body 1, and the monitoring component includes a temperature sensor 37, a humidity sensor 38 and an ultrasonic sensor 36. The temperature sensor 37 and the humidity sensor 38 are fixedly installed on the outer walls of the low-voltage iron core column and the high-voltage iron core column. The temperature sensor 37 and the humidity sensor 38 are connected to the wireless transmission module 13 via a data line, and the data line passes through the outer wall of one side of the oil tank body 1; The outer wall of the wireless transmission module 13 is wrapped with a shielding cover 15, which is connected to the ground terminal of the transformer through a grounding wire. The seam of the shielding cover 15 is filled with an electromagnetic sealing gasket 16. The output end of the power amplifier of the wireless transmission module 13 is connected to the variable attenuator 17. An intelligent power management chip 18 is fixedly installed on the printed circuit board adjacent to the wireless transmission module 13. The power input end and control pin of the wireless transmission module 13 are connected to the intelligent power management chip 18 through wires. Thermal conductive adhesive is filled between the shielding cover 15 and the fuel tank body 1. A cut surface is provided on one side of the top of the outer wall of the fuel tank body 1. A pressure sensor 29 is fixedly mounted on the cut surface. The pressure sensor 29 is in close contact with the outer wall of the fuel tank body 1 via a sealing gasket 30. A signal conditioning board 31 is fixedly mounted on the top of the outer wall of the pressure sensor 29. A transparent cover 32 is fixedly mounted on the outer walls of the pressure sensor 29 and the signal conditioning board 31. Furthermore, the temperature sensor 37 was placed in a standard temperature source and calibrated at multiple temperature points, such as -20°C, 20°C, and 80°C. The deviation between the measured value and the standard value was recorded, and the calibration parameters of the sensor were adjusted. The humidity sensor 38 was calibrated in a calibration room by controlling the humidity at different humidity levels, such as 20%RH, 50%RH, and 80%RH. The sensitivity of the ultrasonic sensor 36 was calibrated using a standard reflector. The pressure sensor 29 was calibrated using a standard pressure generator at pressure points, such as 0.2MPa, 0.5MPa, and 0.8MPa. At the same time, all sensors were functionally tested to check whether their signal transmission was normal and the data display was accurate. The temperature sensor 37 uses a PT100 platinum resistance temperature sensor, and the humidity sensor 38 uses an HMT331 humidity sensor. The data line connecting the temperature sensor 37 and the humidity sensor 38 uses a shielded twisted pair cable with a wire diameter of 0.5 mm². The wireless transmitter module 13 uses the Wi-Fi communication protocol. The shell size of the wireless transmitter module 13 is 80 mm × 50 mm × 20 mm and is made of aluminum alloy. First, apply an appropriate amount of thermal grease to the surface of the core column, then fix the sensor with a stainless steel clamp to ensure close contact between the sensor and the core column. Finally, connect the data cable. The data cable is reasonably wired inside the fuel tank to avoid interference with other components and fixed with a cable tie. After filling the joints of the shielding cover with electromagnetic sealing gasket 16, it is connected to the transformer ground terminal through the grounding wire. When the temperature exceeds the set threshold of 80°C or the humidity exceeds the allowable range of 80%RH, the system automatically issues an alarm signal to remind the operation and maintenance personnel to check and handle it.

[0030] See also Figure 1 、 Figure 3 、 Figure 4 and Figure 7The present invention provides an embodiment of a transformer oil tank with a protective function, wherein an oil filling port 6 is provided at the top of the outer wall of the oil tank body 1, a filling sleeve 7 is fixedly installed at the top of the outer wall of the oil filling port 6, a base plate 4 is fixedly installed at the bottom of the outer wall of the oil tank body 1 by bolts, and mounting holes 5 are provided at the corners of the base plate 4; a filter screen is fixedly installed at the inlet of the drainage groove 20 by bolts, and a clamp 25 is fixedly installed at the bottom of the outer wall of the drainage groove 20 by bolts, and shock-absorbing rings 3 are surrounded at both ends of the side of the outer wall of the oil tank body 1; The output end of the pressure sensor 29 is connected to the positive input end of the threshold judgment unit 33 via a data line, the negative input end of the threshold judgment unit 33 is connected to a reference voltage line 35, and the output end of the threshold judgment unit 33 is connected to a buzzer 34; The accumulated water outside the S6 fuel tank flows into the drain trough 20, and the accumulated water contacts the waterproof partition 24. The rising water level drives the float rod 21 to rise. The rising float rod 21 drives the isolation valve 23 to operate through the connecting rod 22, preventing the accumulated water from getting closer to the tank cover 2 and the top of the fuel tank body 1, protecting the fuel tank from water immersion. The S7 heat dissipation pipe 27 transfers the heat in the fuel tank to the thermocouple 26 through the thermal conductive silicone pad 28 to monitor the heat dissipation. The S8 vent 8 ensures air circulation inside the fuel tank. The insect screen 9 prevents insects and foreign objects from entering the fuel tank. The electrostatic generator 10 charges the insect screen 9. When foreign objects contact the insect screen 9, the voltage changes. The circuit composed of the voltage detection element 11 and the thyristor 12 causes the signal output port 14 to output a warning signal, prompting the operation and maintenance personnel that the insect screen 9 needs to be cleaned. Furthermore, the inner wall of the fuel tank body 1 is coated with a 0.3mm thick epoxy zinc-rich primer, and the outer wall is first coated with a 0.2mm thick anti-rust paint, and then covered with a layer of 3mm thick fire retardant paint. The fire resistance limit of the fire retardant paint is not less than 1.5 hours. A stainless steel filter screen is installed at the entrance of the drainage trough 20. The filter screen aperture is 2mm. The filter screen is fixed to the entrance of the drainage trough by bolts. The bolt specification is M6, and there are 4 bolts in total, which are evenly distributed on the filter screen frame. The bottom end of the outer wall of the drainage trough 20 is fixed with a clamp 25 every 300mm by M8 bolts. The clamp 25 is made of galvanized carbon steel and is 3mm thick. The clamp 25 further tightens the drainage trough 20 to the outer wall of the fuel tank. The shock-absorbing rings 3 are made of rubber with an outer diameter of 150mm, an inner diameter of 130mm, and a thickness of 20mm. They are installed around both ends of the outer wall of the fuel tank body 1, with six rings installed on each end, evenly distributed. The shock-absorbing rings 3 are mounted on the outer wall of the fuel tank using a slot with a depth of 12mm and a width of 155mm. After installation, the shock-absorbing rings 3 fit tightly against the outer wall of the fuel tank. The pressure sensor 29 is model MPM480. The threshold judgment unit 33 is constructed using a comparator LM393 chip. The output current signal of the pressure sensor 29 is converted into a voltage signal through a precision resistor of 250Ω and then input into the positive input terminal of the comparator. The reference voltage line 35 is connected to the negative input terminal of the comparator, and the reference voltage is set to a voltage value of 3V corresponding to the pressure in the fuel tank of 0.5MPa. When the voltage signal output by the pressure sensor 29 is greater than the reference voltage, the comparator outputs a high-level signal, triggering the buzzer 34 to work. The buzzer 34 is piezoelectric, with an operating voltage of 12V and a volume of not less than 80dB. It is installed in a position on the top of the fuel tank that is easy to hear. When the buzzer 34 sounds, it means that the pressure in the fuel tank is too high, reminding the operation and maintenance personnel to check and deal with it in time.

[0031] See also Figure 1 、 Figure 6 and Figure 8 An embodiment of the present invention provides a transformer oil tank with a protective function, wherein the method of use further includes: S5 injecting transformer oil into the oil tank body 1 through the oil filling port 6, and simultaneously monitoring the temperature, humidity, and partial discharge inside the oil tank in real time through the temperature sensor 37, the humidity sensor 38, and the ultrasonic sensor 36. The sensor data is transmitted to the wireless transmission module 13 via a data line. The wireless transmission module 13 sends the data to the monitoring center for remote monitoring by operation and maintenance personnel. When the wireless transmission module 13 is in operation, the shielding cover 15 is grounded through a grounding wire, and the seams of the shielding cover 15 are filled with electromagnetic sealing gaskets 16 to reduce electromagnetic interference. The variable attenuator 17 at the output end of the power amplifier adjusts the signal strength. , the intelligent power management chip 18 manages the power supply of the wireless transmission module 13; S9 pressure sensor 29 monitors the pressure on the top of the outer wall of the fuel tank body 1 in real time, and the output signal of the pressure sensor 29 is transmitted to the threshold judgment unit 33. When the pressure exceeds the set threshold, the threshold judgment unit 33 triggers the buzzer 34 to sound an alarm, reminding the operation and maintenance personnel to pay attention to the fuel tank pressure; S10 tests the working status of the isolation valve 23 and the heat dissipation pipe 27 every week, checks the accumulation of debris in the drain tank 20, cleans the filter, checks the flexibility and reliability of the waterproof partition 24, the float rod 21, the connecting rod 22 and the isolation valve 23, and replaces them immediately if damaged; S11 checks the integrity of the insect screen 9 at the vent 8 and cleans the dust and debris on the insect screen 9; Furthermore, the fuel tank body 1 is made of Q345R pressure vessel special steel plate, and is in the shape of a rectangular parallelepiped, 4000mm long, 2000mm wide, and 2500mm high. The fuel tank wall thickness is 10mm. The oil filling port 6 is located on one side of the top of the fuel tank body 1, with an opening diameter of 100mm. It is made of 316 stainless steel. The inner wall of the oil filling port 6 is finely polished, and the surface roughness Ra is not greater than 3.2μm to reduce resistance and oil residue during oil filling. A reinforcement ring with a thickness of 10mm is welded around the oil filling port 6. The ultrasonic sensor 36 uses the model UT-500. Four ultrasonic sensors 36 are evenly installed at the bottom of the outer wall of the fuel tank and are tightly attached to the fuel tank wall through a special ultrasonic coupling agent. Transformer oil is injected into the tank body 1 through the oil filling port 6. During the filling process, the temperature, humidity, and partial discharge conditions inside the tank are monitored in real time by a temperature sensor 37, a humidity sensor 38, and an ultrasonic sensor 36. Sensor data is transmitted via a data line to the wireless transmitter module 13, which then sends the data to the monitoring center. Operations and maintenance personnel at the monitoring center can view various parameters within the tank in real time to ensure a safe and reliable filling process. The filling rate is controlled within 500 L / min to avoid excessive pressure fluctuations in the tank caused by excessive filling. If the temperature sensor 37 detects that the oil temperature exceeds 60°C, filling should be suspended to investigate the cause of the temperature increase, such as partial discharge or poor heat dissipation. Filling can then be resumed after the oil temperature returns to normal. A pressure sensor 29 monitors the pressure at the top of the outer wall of the tank body 1 in real time. When the pressure exceeds the set threshold of 0.8 MPa, the pressure sensor 29 outputs a signal that is transmitted to the threshold determination unit 33, triggering a buzzer 34.

[0032] Working principle: When water accumulates outside the fuel tank, it flows into the drain groove 20. As the water level rises, the water contacts the waterproof baffle 24. The continued rise in the water level drives the float rod 21 up. When the float rod 21 rises, it drives the isolation valve 23 to operate through the connecting rod 22, thereby preventing the accumulated water from getting closer to the tank cover 2 and the top of the fuel tank body 1. Heat within the fuel tank is conducted through heat pipe 27, which transfers the heat to the hot end of thermocouple 26 via thermally conductive silicone pad 28. The cold end of thermocouple 26 is fixed to the side of the heat source. Ventilation port 8 ensures air circulation within the fuel tank. Insect screen 9 prevents insects and foreign objects from entering the tank. An electrostatic generator 10 is fixedly mounted on the edge frame of insect screen 9 to charge the insect screen 9. When foreign objects contact insect screen 9, the voltage on the insect screen 9 changes. This voltage change is detected by voltage detection element 11. The circuit composed of voltage detection element 11 and thyristor 12 causes signal output port 14 to output a warning signal, prompting maintenance personnel to clean the insect screen 9 to ensure the insect-proof effect of the insect screen 9 and the normal ventilation of vent 8. When the pressure exceeds the set threshold, the signal output by the pressure sensor 29 is transmitted to the threshold judgment unit 33, which will cause the threshold judgment unit 33 to trigger the buzzer 34 to sound an alarm, reminding the operation and maintenance personnel to pay attention to the tank pressure.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A transformer oil tank with protective function, characterized by: The invention comprises a fuel tank body (1), a tank cover (2) and a protective component, wherein the tank cover (2) is fixedly mounted on the top of the outer wall of the fuel tank body (1) by means of bolts, and the protective component is fixedly mounted on the outer walls of the fuel tank body (1) and the tank cover (2); The protection assembly comprises a drainage trough (20), a waterproof partition (24) and an isolation valve (23); the drainage trough (20) is fixedly mounted on the periphery of the outer wall of the oil tank body (1) by means of a card slot; the waterproof partition (24) is fixedly mounted on the top of the outer wall of the drainage trough (20); the floating rod (21) is fixedly mounted on the top of the outer wall of the waterproof partition (24); the isolation valve (23) is fixedly mounted on the top of the outer wall of the floating rod (21) via a connecting rod (22); and the isolation valve (23) is fixedly mounted on the top of the outer wall of the tank cover (2) by means of bolts; A heat dissipation pipe (27) is fixedly mounted on the side of the outer wall of the isolation valve (23); the heat dissipation pipe (27) is connected to the hot end of the thermocouple (26) via a heat-conducting silicone pad (28); and the cold end of the thermocouple (26) is fixedly mounted on the side of the heat source.

2. The transformer oil tank with protective function according to claim 1, characterized in that: The oil tank body (1) is provided with a vent (8) at the bottom of the side of the outer wall, a wireless transmitter module (13) is fixedly installed on one side of the inner wall of the oil tank body (1) on which the vent (8) is installed, a signal output port (14) is fixedly installed at the bottom of the outer wall of the wireless transmitter module (13), an insect-proof net (9) is fixedly installed on the front of the outer wall of the vent (8), the edge of the insect-proof net (9) is coated with sealant, and an electrostatic generator (10) is fixedly installed on the edge frame of the insect-proof net (9); The output end of the electrostatic generator (10) is connected to the cathode of the voltage detection element (11), the anode of the voltage detection element (11) is connected to the gate of the thyristor (12), the anode of the thyristor (12) is connected to the output end of the electrostatic generator (10), the thyristor (12) is connected in parallel with the small resistance resistor, the first port of the signal output port (14) is connected to the two ends of the small resistance, the second port of the signal output port (14) is connected to the two ends of the large resistance, and the large resistance and the voltage detection element (11) are connected in series to form a branch.

3. The transformer oil tank with protective function according to claim 1, characterized in that: The fuel tank body (1) is designed as a multi-layer structure, with an inner layer of steel plate, a middle layer of anti-corrosion coating, and an outer layer of high-temperature resistant material. A detection component is provided inside the fuel tank body (1), and the monitoring component includes a temperature sensor (37), a humidity sensor (38), and an ultrasonic sensor (36). The outer walls of the low-voltage iron core column and the high-voltage iron core column are fixedly mounted with a temperature sensor (37) and a humidity sensor (38). The temperature sensor (37) and the humidity sensor (38) are connected to the wireless transmission module (13) via a data line, and the data line passes through the outer wall of one side of the fuel tank body (1).

4. The transformer oil tank with protective function according to claim 2, characterized in that: The outer wall of the wireless transmission module (13) is wrapped with a shielding cover (15), the shielding cover (15) is connected to the grounding terminal of the transformer through a grounding wire, the seam of the shielding cover (15) is filled with an electromagnetic sealing gasket (16), the power amplifier output end of the wireless transmission module (13) is connected to the variable attenuator (17), an intelligent power management chip (18) is fixedly installed on the printed circuit board adjacent to the wireless transmission module (13), and the power input end and control pin of the wireless transmission module (13) are connected to the intelligent power management chip (18) through a wire.

5. The transformer oil tank with protective function according to claim 4, characterized in that: A heat-conducting adhesive is filled between the shielding cover (15) and the oil tank body (1). A cut surface is provided on one side of the top of the outer wall of the oil tank body (1). A pressure sensor (29) is fixedly mounted on the cut surface. The pressure sensor (29) is in close contact with the outer wall of the oil tank body (1) via a sealing gasket (30). A signal conditioning board (31) is fixedly mounted on the top of the outer wall of the pressure sensor (29). A transparent cover (32) is fixedly mounted on the outer walls of the pressure sensor (29) and the signal conditioning board (31).

6. The transformer oil tank with protective function according to claim 2, characterized in that: A battery box (19) is fixedly installed at the bottom of the edge of the vent (8), and an independent battery is placed inside the battery box (19). The independent battery has an integrated battery management system. The independent battery is connected to the electrostatic generator (10) and the third port of the signal output port (14) via a data cable.

7. The transformer oil tank with protective function according to claim 1, characterized in that: The top of the outer wall of the oil tank body (1) is provided with an oil filling port (6), the top of the outer wall of the oil filling port (6) is fixedly mounted with a filling sleeve (7), the bottom of the outer wall of the oil tank body (1) is fixedly mounted with a base plate (4) by means of bolts, and the corners of the base plate (4) are provided with mounting holes (5); A filter is fixedly installed at the inlet of the drainage trough (20) by means of bolts, a clamp (25) is fixedly installed at the bottom end of the outer wall of the drainage trough (20) by means of bolts, and shock-absorbing rings (3) are arranged around both ends of the side surface of the outer wall of the oil tank body (1).

8. The transformer oil tank with protective function according to claim 5, characterized in that: The output end of the pressure sensor (29) is connected to the positive input end of the threshold judgment unit (33) via a data line, the negative input end of the threshold judgment unit (33) is connected to a reference voltage line (35), and the output end of the threshold judgment unit (33) is connected to a buzzer (34).

9. A method for using a transformer oil tank with a protective function, applicable to the transformer oil tank with a protective function according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: S1 Check the integrity of the fuel tank body (1), ensure that the inner steel plate is not damaged, the middle anti-corrosion coating is uniform and not peeling, and the outer high-temperature resistant material has no cracks, calibrate and test the temperature sensor (37), humidity sensor (38), ultrasonic sensor (36) and pressure sensor (29), and check the insect screen (9) at the vent (8) to ensure that it is firmly installed and the sealant is not damaged; S2 fixes the base plate (4) on the predetermined foundation platform through the mounting holes (5), ensuring that the installation is firm and level; S3 lifts the fuel tank body (1) and places it on the base plate (4), tightly connects the fuel tank body (1) and the base plate (4) with bolts, installs shock-absorbing rings (3) at both ends of the outer wall side of the fuel tank body (1), and installs new batteries in the battery box (19); S4 fixes the tank cover (2) to the top of the outer wall of the oil tank body (1) by means of bolts, and installs the filling sleeve (7) at the oil filling port (6).

10. The method for using a transformer oil tank with a protective function according to claim 9, characterized in that: The method of use further comprises the following steps: S5 injects transformer oil into the oil tank body (1) through the oil filling port (6), and monitors the temperature, humidity and partial discharge inside the oil tank in real time through the temperature sensor (37), humidity sensor (38) and ultrasonic sensor (36). The sensor data is transmitted to the wireless transmission module (13) through the data line. The wireless transmission module (13) sends the data to the monitoring center for remote monitoring by the operation and maintenance personnel. When the wireless transmission module (13) is in operation, the shielding cover (15) is grounded through the grounding wire. The seams of the shielding cover (15) are filled with electromagnetic sealing gaskets (16) to reduce electromagnetic interference. The variable attenuator (17) at the output end of the power amplifier adjusts the signal strength. The intelligent power management chip (18) manages the power supply of the wireless transmission module (13); The accumulated water outside the S6 oil tank flows into the drainage groove (20), and the accumulated water contacts the waterproof partition (24). The rising water level drives the float rod (21) to rise. The rising float rod (21) drives the isolation valve (23) to operate through the connecting rod (22), preventing the accumulated water from further approaching the tank cover (2) and the top of the oil tank body (1), thereby protecting the oil tank from flooding. The S7 heat dissipation pipe (27) conducts the heat in the oil tank to the thermocouple (26) through the thermal conductive silicone pad (28) to monitor the heat dissipation; The S8 vent (8) ensures air circulation inside the fuel tank, the insect screen (9) prevents insects and foreign objects from entering the fuel tank, the electrostatic generator (10) charges the insect screen (9), and foreign objects contacting the insect screen (9) cause voltage changes. The circuit composed of the voltage detection element (11) and the thyristor (12) causes the signal output port (14) to output a warning signal, prompting the operation and maintenance personnel that the insect screen (9) needs to be cleaned; The S9 pressure sensor (29) monitors the pressure at the top of the outer wall of the fuel tank body (1) in real time. The output signal of the pressure sensor (29) is transmitted to the threshold judgment unit (33). When the pressure exceeds the set threshold, the threshold judgment unit (33) triggers the buzzer (34) to sound an alarm, reminding the operation and maintenance personnel to pay attention to the fuel tank pressure situation; S10 Test the working condition of the isolation valve (23) and the heat pipe (27) every week, check the accumulation of debris in the drainage trough (20), clean the filter, check the flexibility and reliability of the waterproof partition (24), the floating rod (21), the connecting rod (22) and the isolation valve (23), and replace them immediately if damaged; S11 Check the integrity of the insect screen (9) at the vent (8) and clean the dust and debris on the insect screen (9).

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