Transformer with fire extinguishing device

Abstract

The application relates to the technical field of transformers, and discloses a transformer with a fire extinguishing device, which comprises a transformer body, is used for a power transformer in a power system, and is internally provided with an oil tank for storing oil to cool the transformer body; the limit roller at the end of the square slide rod is rolled out from the lower surface of the limit protrusion by moving the pressure plate to drive the square slide rod to move away from the limit protrusion; at this time, the sliding sleeve is released from the limit, and then slides downward along the limit slide rod under the gravity of the oil pillow; the oil pillow can be timely moved away from the transformer body when the two fire extinguishing tanks enter the fire extinguishing process, the temperature rise of the oil in the oil pillow caused by the fire is avoided, spontaneous combustion is avoided, and the damage risk of the transformer body and surrounding equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a transformer with a fire extinguishing device. Background Art

[0002] Oil-immersed transformers are widely used in power systems. Their key feature is the use of oil as both an insulating and cooling medium. They typically consist of a transformer body, an oil tank, an oil pillow, and ancillary equipment. The core components—the transformer core and windings—are immersed in insulating oil. The oil not only provides insulation but also dissipates heat generated by the current, ensuring the transformer operates within a safe temperature range. To ensure smooth oil flow from the oil pillow into the transformer during operation, the oil pillow is located above the oil-immersed transformer. If an oil-immersed transformer is overloaded for extended periods, the oil tank can overheat, potentially causing a fire. A fire in an oil-immersed transformer typically occurs in two stages: a primary explosion (tank rupture), in which the insulating oil (mineral oil) decomposes under the action of an electric arc into a hydrocarbon mixture of hydrogen (H2), methane (CH4), ethylene (C2H4), and acetylene (C2H2). This rapid expansion causes a sharp increase in internal pressure. When the internal pressure exceeds the mechanical strength limit of the tank, the tank ruptures (primary explosion), releasing large amounts of high-temperature oil mist, gas, and liquid insulating oil. A secondary explosion (gas mixture explosion) occurs, in which the gaseous hydrocarbon mixture (such as methane and acetylene) released from the primary explosion mixes with air and reaches its explosive limit (for example, the explosive limit of methane is 5% to 15%), creating an explosive atmosphere. When the gas mixture encounters an electric arc, sparks, or hot surfaces, it ignites, producing a violent explosion (secondary explosion). Therefore, it is important to promptly control the fire when the primary explosion occurs to prevent a secondary explosion.

[0003] When an existing oil-immersed transformer is in use, if a primary explosion occurs in the oil tank, the oil pillow above it cannot be kept away from the transformer oil tank. The burning transformer oil tank heats the oil pillow, causing the oil temperature inside the oil pillow to rise and spontaneously combust, which will aggravate the severity of the fire and increase the risk of damage to the transformer and surrounding equipment. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a transformer with a fire extinguishing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A transformer with a fire extinguishing device, comprising:

[0007] The transformer body is used for a power transformer in a power system. An oil tank is provided inside the transformer body for storing oil to cool the transformer body;

[0008] An oil pillow is used to store transformer oil and adjust the oil level in the oil tank inside the transformer body. The oil pillow is arranged above the oil tank inside the transformer body.

[0009] A fire extinguishing assembly for extinguishing a fire in the oil tank inside the transformer body. The fire extinguishing assembly is arranged around the transformer body and includes two placement plates fixedly mounted on the end face of the transformer body near one end of the oil pillow. A placement frame is fixedly mounted on the upper surface of each of the two placement plates. Fire extinguishing cans are arranged inside each of the two placement frames. One of the fire extinguishing cans contains perfluorohexanone, and the other fire extinguishing can contains dry powder fire extinguishing agent.

[0010] The protective component is used to drive the oil pillow away from the transformer body when the transformer body catches fire. The protective component is arranged between the oil pillow and the transformer body.

[0011] As a further solution of the present invention, a gas relay is fixedly installed on the top of the transformer body for analyzing the gas content of hydrogen, acetylene and carbon monoxide. A connecting hose is fixedly connected to the bottom of the oil pillow, and the bottom end of the connecting hose is fixedly connected to the liquid inlet end of the gas relay. The oil pillow is connected to the oil tank inside the transformer body through the connecting hose and the gas relay.

[0012] As a further solution of the present invention, a fireworks temperature sensor is fixedly installed on the upper surface of the transformer body, a conduit is fixedly installed on the top of the transformer body, the conduit is arranged around the transformer body, and a plurality of nozzles are fixedly installed at equal intervals on the upper surface of the conduit. The tops of the two fire extinguishing tanks are respectively provided with electromagnetic valves, and the air outlet ends of the two electromagnetic valves are fixedly connected to connecting air pipes. The air outlet ends of the two connecting air pipes are respectively fixedly connected to the two ends of the conduit, and the fire extinguishing tanks are connected to the inside of the conduit through the connecting air pipes.

[0013] As a further solution of the present invention, the protective component includes two rotating arms that are symmetrically mounted on the upper surface of the transformer body, the top ends of the two rotating arms are fixedly connected to the bottom of the oil pillow, and two support plates are fixedly mounted on one end of the transformer body close to the oil pillow, and a limiting slide is fixedly mounted between the outer surfaces of the two support plates. A sliding sleeve is slidably mounted on the outer surface of the limiting slide close to the top, and a support rod is rotatably mounted on the bottom of the oil pillow. The support rod is arranged between the two rotating arms, and the bottom end of the support rod is rotatably mounted on the outer surface of the sliding sleeve away from the oil pillow.

[0014] As a further scheme of the present application, the outer surface of the limiting slide rod is fixedly installed with a limiting plate, the outer surface of the limiting slide rod is sleeved with a first spring, the first spring is arranged between the sliding sleeve and the limiting plate, the lower surface of the sliding sleeve is fixedly installed with a limiting cylinder, the bottom end of the limiting cylinder is abutted with the upper surface of the limiting plate, and a limiting assembly is arranged between the sliding sleeve and the supporting plate.

[0015] As a further scheme of the present application, the limiting assembly comprises a supporting block fixedly installed on the lower surface of the upper supporting plate, the supporting block is arranged on the side of the sliding sleeve close to the transformer body, the outer surface of the supporting block is slidingly inserted with a square slide rod, the end of the square slide rod close to the sliding sleeve penetrates the outer surface of the square slide rod and is slidingly installed with the inner wall thereof, the inner wall of the end of the square slide rod close to the sliding sleeve is rotatably installed with a limiting roller, the outer surface of the side of the sliding sleeve close to the limiting roller is fixedly installed with a limiting protrusion, the limiting roller is arranged directly below the limiting protrusion, the circumferential outer surface of the limiting roller is abutted with the lower surface of the limiting protrusion, the outer surface of the end of the square slide rod close to the sliding sleeve is fixedly installed with a blocking ring, the outer surface of the square slide rod is sleeved with a second spring, one end of the second spring is fixedly connected with the outer surface of the blocking ring, the other end of the second spring is fixedly connected with the outer surface of the supporting block, and a movement assembly for sliding the square slide rod is arranged between the supporting block and the placing plate.

[0016] As a further scheme of the present application, the movement assembly comprises two fixed blocks fixedly installed on the outer surfaces of the sides of the supporting block opposite to the sliding sleeve, the outer surfaces of the opposite sides of the two fixed blocks are fixedly installed with second compression cylinders, the axes of the two second compression cylinders are spaced apart, the inner walls of the two second compression cylinders are slidingly installed with second piston plates, the outer surfaces of the adjacent ends of the two second piston plates are fixedly installed with push rods, the adjacent ends of the two push rods penetrate the outer surfaces of the second compression cylinders and the fixed blocks and are slidingly installed with the inner walls thereof, the adjacent ends of the two push rods are fixedly installed with top heads, the two top heads are symmetrically arranged, the outer surfaces of the sides of the two top heads away from the supporting block are respectively provided with inclined surfaces, the upper surface of the other end of the square slide rod is fixedly installed with a pressure plate, the outer surface of the side of the pressure plate close to the supporting block is symmetrically provided with two inclined angles, the two inclined angles are respectively abutted with the two inclined surfaces, and the outer surface of the second compression cylinder close to the top head is provided with a through hole.

[0017] As a further scheme of the present application, the transformer body is fixedly installed with a contact sensor near the outer surface of one of the fire extinguishing tanks, the contact sensor is arranged above one of the fire extinguishing tanks, the upper surfaces of the two placing plates are provided with circular grooves, the inner walls of the circular grooves are slidably installed with placing discs, the lower surfaces of the placing discs at the middle positions are fixedly installed with jacks, the bottom ends of the jacks penetrate through the lower surfaces of the placing plates and are slidably installed with the inner walls thereof, the bottom ends of the jacks are fixedly installed with circular plates, the outer surfaces of the jacks are sleeved with tension springs, the top ends of the tension springs are fixedly connected with the lower surfaces of the placing plates, and the bottom ends of the tension springs are fixedly connected with the upper surfaces of the circular plates.

[0018] As a further scheme of the present application, the lower surfaces of the two placing plates are fixedly installed with first compression cylinders, the inner walls of the two first compression cylinders are slidably installed with first piston plates, the lower surfaces of the two first piston plates are fixedly installed with piston rods, the bottom ends of the two piston rods are fixedly installed with fixed plates penetrating through the lower surfaces of the first compression cylinders, the other ends of the fixed plates are fixedly installed with the lower surfaces of the circular plates, a plurality of exhaust holes are formed through the lower surfaces of the first compression cylinders, the outer surfaces of the first compression cylinders near the top ends are fixedly connected with hydraulic pipes, the other ends of the hydraulic pipes are fixedly connected with the other ends of the second compression cylinders, the first compression cylinders are connected with the interiors of the second compression cylinders through the hydraulic pipes, and the interiors of the first compression cylinders, the hydraulic pipes and the second compression cylinders are filled with hydraulic oil.

[0019] As a further scheme of the present application, the upper surface of the limiting plate away from the oil pillow is provided with a bushing penetratingly formed, the upper surface of the lower supporting plate is provided with the same bushing penetratingly formed, two semicircular sliding columns are symmetrically slidably installed between the inner walls of the two bushings, the bottom ends of the two semicircular sliding columns are fixedly installed with connecting plates penetrating through the lower surfaces of the supporting plates, and the outer surfaces of the two fixed plates are fixedly connected with the ends of the two connecting plates away from each other.

[0020] When encountering abnormal conditions, the device triggers the power current differential speed break protection signal to start, the perfluoroketone extinguishing agent is sprayed, and the conventional dry powder extinguishing agent is sprayed.

[0021] The movement of the pressure plate drives the square slide rod to move away from the limiting protrusion, so that the limiting roller at the end of the square slide rod rolls out of the lower surface of the limiting protrusion. At this time, the sleeve is released from the limiting, and then slides downward along the limiting slide rod under the gravity of the oil pillow. Through the device, when the two fire extinguishing tanks enter the fire extinguishing process, the oil pillow can timely move away from the transformer body, so as to avoid the temperature rise of the oil in the oil pillow caused by fire, and to prevent the oil from self-igniting, thereby ensuring the damage risk of the transformer body and surrounding equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1The overall structure schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0023] Figure 2 The front view structure schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0024] Figure 3 The fire extinguishing assembly schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0025] Figure 4 The fire extinguishing assembly bottom view schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0026] Figure 5 The placing plate schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0027] Figure 6 The semicircle slide column schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0028] Figure 7 The slide sleeve schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0029] Figure 8 The square slide rod schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0030] Figure 9 The square slide rod top view schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0031] Figure 10 The first compression cylinder sectional view schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0032] Figure 11 The second compression cylinder sectional view schematic diagram of a transformer with fire extinguishing device is provided in the present application;

[0033] Figure 12 The Figure 4 The local enlarged schematic diagram of A in the present application;

[0034] Figure 13 The local enlarged schematic diagram of B in the present application. Figure 4

[0035] ​In the figure: 1. Transformer body; 101. Gas relay; 2. Oil pillow; 3. Firework temperature sensor; 4. Rotating arm; 5. Connecting hose; 6. Conduit; 7. Nozzle; 8. Fire extinguisher; 801. Solenoid valve; 9. Contact sensor; 10. Placement plate; 1001. Placement tray; 1002. Circular plate; 1003. Tension spring; 1004. Push rod; 11. Placement frame; 12. Support plate; 13. Limiting slide bar; 14. Limiting plate; 15. First spring; 16. Sliding sleeve; 1601. Limiting cylinder; 17. Support rod. 18. First compression cylinder; 1801. Hydraulic pipe; 1802. Exhaust hole; 1803. First piston plate; 1804. Piston rod; 19. Semi-circular smooth column; 20. Connecting plate; 21. Fixed plate; 22. Support block; 23. Limiting protrusion; 24. Square slide bar; 25. Limiting roller; 26. Retaining ring; 27. Second spring; 28. Fixed block; 29. ​​Second compression cylinder; 2901. Through hole; 30. Push head; 3001. Inclined surface; 31. Pressure plate; 3101. Bevel; 32. Push rod; 33. Second piston plate. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0037] 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.

[0038] 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; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] like Figure 1 and Figure 2 A transformer with a fire extinguishing device, comprising:

[0040] The transformer body 1 is used for a power transformer in a power system. An oil tank is provided inside the transformer body 1 for storing oil to cool the transformer body 1 and prevent overheating of internal electrical components.

[0041] The oil pillow 2 is used to store transformer oil and adjust the oil level of the oil tank inside the transformer body 1. The oil pillow 2 is arranged above the oil tank inside the transformer body 1. It helps to provide an effective cooling oil flow path at high temperatures, allowing the oil to flow better and improve the overall heat dissipation capacity;

[0042] like Figure 1 and Figure 2 As shown, the fire extinguishing assembly is used to extinguish the oil tank inside the transformer body 1. The fire extinguishing assembly is arranged around the transformer body 1 to facilitate omnidirectional fire extinguishing of the oil tank inside the transformer body 1;

[0043] The fire extinguishing assembly includes two placement plates 10 fixedly mounted on the end surface of the transformer body 1 near one end of the oil pillow 2. A placement frame 11 is fixedly mounted on the upper surface of the two placement plates 10. Fire extinguishing tanks 8 are arranged inside the two placement frames 11. The two fire extinguishing tanks 8 are placed inside the two placement frames 11 respectively, and they can be limited to prevent the position of the fire extinguishing tanks 8 from shifting, which is convenient for subsequent fire extinguishing use.

[0044] One of the fire extinguisher tanks 8 contains perfluorohexanone. The fire extinguisher tank 8 containing perfluorohexanone is opened first to fully cover the oil tank inside the transformer body 1 and spray it to extinguish the fire. Through the dual mechanism of physical heat absorption cooling and chemical chain inhibition, the oil fire is efficiently extinguished. At the same time, it is ensured that no secondary explosion will be caused by the arc. The other fire extinguisher tank 8 contains dry powder fire extinguishing agent. The fire extinguisher tank 8 containing dry powder fire extinguishing agent is opened last. It isolates oxygen by covering the surface of the burning object (physical isolation) and decomposes and absorbs heat to suppress re-ignition. Through the dual mechanism of fire extinguishing, it is ensured that no secondary explosion will occur in the oil tank inside the transformer body 1.

[0045] like Figure 2 and Figure 3 As shown, the protective component is arranged between the oil pillow 2 and the transformer body 1. It is used to drive the oil pillow 2 away from the transformer body 1 when the oil tank inside the transformer body 1 catches fire. The protective component can prevent the oil tank inside the transformer body 1 from overheating when it catches fire, and heat the oil inside the oil pillow 2 to ignite.

[0046] In this embodiment, Figure 1 and Figure 2As shown in the drawings, the top of the transformer body 1 is fixedly provided with a gas relay 101 for analyzing the content of hydrogen, acetylene, carbon monoxide and other gases. When the monitored gas content exceeds the warning value, the graded protection is realized, i.e. the alarm is given first and then the tripping is realized. The bottom of the oil pillow 2 is fixedly connected with a connecting hose 5, the bottom end of the connecting hose 5 is fixedly connected with the liquid inlet end of the gas relay 101. The oil pillow 2 is connected with the oil tank inside the transformer body 1 through the connecting hose 5 and the gas relay 101. The oil liquid inside the oil pillow 2 enters the oil tank inside the transformer body 1 through the connecting hose 5 and the gas relay 101, and circulates with the oil liquid inside the oil tank, so as to facilitate the heat dissipation of the electrical elements on the transformer body 1.

[0047] In the embodiment, as shown in the drawings, Figure 1 and Figure 3 As shown in the drawings, the upper surface of the transformer body 1 is fixedly provided with a smoke and fire temperature sensor 3. When the oil tank inside the transformer body 1 is on fire, the smoke and fire temperature sensor 3 will sense the smoke and fire, and the internal temperature sensor will also sense the temperature rise of the oil tank inside the transformer body 1. The top of the transformer body 1 is fixedly provided with a conduit 6 which is arranged around the transformer body 1. The upper surface of the conduit 6 is fixedly provided with a plurality of nozzles 7 at equal intervals. The top of each of the two fire extinguishing tanks 8 is provided with an electromagnetic valve 801. The gas outlet ends of the two electromagnetic valves 801 are fixedly connected with connecting gas pipes. The gas outlet ends of the two connecting gas pipes are fixedly connected with the two ends of the conduit 6. The fire extinguishing tank 8 is connected with the inside of the conduit 6 through the connecting gas pipe. The smoke and fire temperature sensor 3 sends an electric signal to one of the electromagnetic valves 801 to open the valve. Then the perfluorohexone inside one of the fire extinguishing tanks 8 enters the inside of the conduit 6 through the connecting gas pipe, and then is sprayed out from the nozzles 7 to fully cover and extinguish the fire in the fire area of the oil tank inside the transformer body 1.

[0048] In the embodiment, as shown in the drawings, Figures 1-3 As shown in the drawings, the protection assembly includes two rotating arms 4 which are symmetrically and rotatably installed on the upper surface of the transformer body 1. The top ends of the two rotating arms 4 are fixedly connected with the bottom of the oil pillow 2, so that the oil pillow 2 can move downward by means of the two rotating arms 4, thereby moving away from the upper side of the transformer body 1. Two supporting plates 12 are fixedly installed on the upper and lower sides of the end of the transformer body 1 close to the oil pillow 2. A limiting sliding rod 13 is fixedly installed between the outer surfaces of the two supporting plates 12. A sliding sleeve 16 is slidably installed on the outer surface of the limiting sliding rod 13 close to the top end. A supporting rod 17 is rotatably installed on the bottom of the oil pillow 2 and is arranged between the two rotating arms 4. The bottom end of the supporting rod 17 is rotatably installed on the outer surface of the sliding sleeve 16 away from the oil pillow 2. When the oil pillow 2 rotates downward, the supporting rod 17 moves downward, and the sliding sleeve 16 slides downward along the limiting sliding rod 13 by the driving of the supporting rod 17. When the protection assembly works, both of the fire extinguishing tanks 8 need to enter the fire extinguishing process to operate.

[0049] AsFigure 4 、 Figure 5 and Figure 6 It is shown that the outer surface of the limiting slide rod 13 is fixedly installed with a limiting plate 14, the outer surface of the limiting slide rod 13 is sleeved with a first spring 15, the first spring 15 is arranged between the sliding sleeve 16 and the limiting plate 14, when the sliding sleeve 16 moves downward, the first spring 15 between the sliding sleeve 16 and the limiting plate 14 is compressed, so that the downward movement of the sliding sleeve 16 is buffered, thereby buffering the downward movement of the oil pillow 2, avoiding the oil pillow 2 moving downward too fast, and damaging itself when it suddenly stops;

[0050] The lower surface of the sliding sleeve 16 is fixedly installed with a limiting cylinder 1601, the bottom end of the limiting cylinder 1601 abuts against the upper surface of the limiting plate 14, through the arrangement, the downward movement height of the sliding sleeve 16 can be limited, thereby limiting the downward movement distance of the oil pillow 2, so that the oil pillow 2 can be kept at the position farthest from the transformer body 1.

[0051] In the embodiment, as shown in Figure 5 、 Figure 6 and Figure 7 It is shown that a limiting assembly is arranged between the sliding sleeve 16 and the support plate 12, when the sliding sleeve 16 has not moved downward and stops at the highest end, the limiting assembly limits it to stop at the highest end;

[0052] The limiting assembly includes a support block 22 fixedly installed on the lower surface of the upper support plate 12, the support block 22 is arranged on the side of the sliding sleeve 16 close to the transformer body 1, the outer surface of the support block 22 is slidingly inserted with a square slide rod 24, the outer shape of the square slide rod 24 is square, which can ensure that it does not rotate when sliding, the inner wall of the end of the square slide rod 24 close to the sliding sleeve 16 is slidingly installed through the outer surface of the square slide rod 24, the inner wall of the end of the square slide rod 24 close to the sliding sleeve 16 is rotatably installed with a limiting roller 25, the outer surface of the side of the sliding sleeve 16 close to the limiting roller 25 is fixedly installed with a limiting protrusion 23, the limiting roller 25 is arranged directly below the limiting protrusion 23, the circumferential outer surface of the limiting roller 25 abuts against the lower surface of the limiting protrusion 23, the outer surface of the end of the square slide rod 24 close to the sliding sleeve 16 is fixedly installed with a stop ring 26, the outer surface of the square slide rod 24 is sleeved with a second spring 27, one end of the second spring 27 is fixedly connected with the outer surface of the stop ring 26, the other end of the second spring 27 is fixedly connected with the outer surface of the support block 22, through the elastic force of the second spring 27, the square slide rod 24 drives the limiting roller 25 to be located below the limiting protrusion 23, the limiting roller 25 can limit the downward sliding of the limiting protrusion 23, thereby limiting the downward movement of the sliding sleeve 16, so that the oil pillow 2 can be kept at the normal position when the terminal post above the transformer body 1 is not on fire or the fire can be timely controlled.

[0053] In the embodiment, as shown in Figure 7As shown in the figure, the motion assembly is arranged between the support block 22 and the placement plate 10 to drive the square slide rod 24 to slide, and the square slide rod 24 is driven by the motion assembly to move along the inner wall of the support block 22, and moves towards or away from the sliding sleeve 16.

[0054] In this embodiment, as shown in the figure, the contact sensor 9 is fixedly installed on the outer surface of one of the fire extinguishing tanks 8 close to the transformer body 1. Figure 1 When the smoke and fire temperature sensor 3 still monitors that the temperature of the oil tank inside the transformer body 1 is too high after a period of time of the first fire extinguishing, the contact sensor 9 is started through the electric signal control, the contact sensor 9 is arranged above one of the fire extinguishing tanks 8, when one of the fire extinguishing tanks 8 moves to a certain height, it will contact the contact sensor 9 in the starting state, so as to send an electric signal to control the other electromagnetic valve 801 to open the valve, so that the dry powder extinguishing agent stored in the other fire extinguishing tank 8 is sprayed out from the nozzle 7 to cover the fire area of the oil tank inside the transformer body 1 again, when both of the fire extinguishing tanks 8 enter the fire extinguishing work, it can be judged that the fire is serious.

[0055] As shown in the figure, Figure 5 and Figure 13 The upper surfaces of the two placement plates 10 are provided with circular grooves, the inner walls of the circular grooves are slidably installed with placement discs 1001, the lower surfaces of the middle positions of the placement discs 1001 are fixedly installed with jacks 1004, the bottom ends of the jacks 1004 penetrate through the lower surfaces of the placement plates 10 and are slidably installed with the inner walls thereof, the bottom ends of the jacks 1004 are fixedly installed with circular plates 1002, the outer surfaces of the jacks 1004 are sleeved with tension springs 1003, the top ends of the tension springs 1003 are fixedly connected with the lower surfaces of the placement plates 10, and the bottom ends of the tension springs 1003 are fixedly connected with the upper surfaces of the circular plates 1002.

[0056] When the electromagnetic valves 801 of the two fire extinguishing tanks 8 are opened in turn, because the perfluorohexone extinguishing agent in one of the fire extinguishing tanks 8 is released first, the weight thereof will gradually decrease, in the process of the weight decreasing to the lightest, the circular plate 1002 drives the jack 1004 to move upwards through the action force of the tension spring 1003, the jack 1004 drives the placement disc 1001 to move upwards, so that the placement disc 1001 drives one of the fire extinguishing tanks 8 to move upwards, when it touches the contact sensor 9, the other fire extinguishing tank 8 will continue to spray the dry powder extinguishing agent for fire extinguishing, through the device, the two fire extinguishing tanks 8 can enter the fire extinguishing in turn, when one of them completely extinguishes the fire and the smoke and fire temperature sensor 3 monitors that the temperature is normal, the other one will not enter the fire extinguishing, so as to avoid wasting the use of the fire extinguishing tank 8, when one of the fire extinguishing tanks 8 cannot completely stabilize the fire, the other one enters the fire extinguishing process, so as to improve the success probability of fire extinguishing.

[0057] In this embodiment, as shown in the figure, Figure 4 and Figure 13As shown in the drawings, the lower surface of each of the two placement plates 10 is fixedly installed with a first compression cylinder 18, the inner wall of each of the two first compression cylinders 18 is slidably installed with a first piston plate 1803, the lower surface of each of the two first piston plates 1803 is fixedly installed with a piston rod 1804, the bottom end of each of the two piston rods 1804 is fixedly installed with a fixed plate 21 penetrating through the lower surface of the first compression cylinder 18, the other end of the fixed plate 21 is fixedly installed with the lower surface of the circular plate 1002, a plurality of exhaust holes 1802 are formed penetrating through the lower surface of the first compression cylinder 18, and the exhaust holes 1802 can balance the air pressure inside the first compression cylinder 18 when the first piston plate 1803 moves.

[0058] When the two fire extinguishing tanks 8 are opened in sequence, the two circular plates 1002 are sequentially moved upward, the fixed plate 21 is moved upward by the upward movement of the circular plate 1002, and the first piston plate 1803 is slid upward along the inner wall of the first compression cylinder 18 by the piston rod 1804 of the fixed plate 21, so that the first piston plate 1803 extrudes the hydraulic oil at the top of the first compression cylinder 18.

[0059] As shown in the drawings, Figure 8 and Figure 9 The movement assembly includes two fixed blocks 28 fixedly installed on the outer surface of the opposite side of the support block 22 relative to the sliding sleeve 16, the outer surface of the opposite side of each of the two fixed blocks 28 is fixedly installed with a second compression cylinder 29, the axis of each of the two second compression cylinders 29 is spaced apart, so that the two second compression cylinders 29 are staggered by a distance in the direction perpendicular to the axis, the outer surface of the second compression cylinder 29 close to the top head 30 is provided with a through hole 2901, the through hole 2901 can balance the air pressure inside the second compression cylinder 29 when the second piston plate 33 moves, so that the second piston plate 33 can slide correctly;

[0060] As shown in the drawings, Figure 9 , Figure 12 and Figure 13 The inner wall of each of the two second compression cylinders 29 is slidably installed with a second piston plate 33, the outer surface of the first compression cylinder 18 close to the top end is fixedly connected with a hydraulic pipe 1801, the other end of the hydraulic pipe 1801 is fixedly connected with the other end of the second compression cylinder 29, the inside of the first compression cylinder 18 is in communication with the inside of the second compression cylinder 29 through the hydraulic pipe 1801, and the inside of the first compression cylinder 18, the hydraulic pipe 1801 and the second compression cylinder 29 are filled with hydraulic oil;

[0061] When the hydraulic oil in the inside of one of the first compression cylinders 18 flows into the inside of one of the second compression cylinders 29 through the hydraulic pipe 1801, one of the second piston plates 33 is driven to move close to the square slide rod 24 by oil pressure; then when the hydraulic oil in the inside of the other first compression cylinder 18 flows into the inside of the other second compression cylinder 29 through the hydraulic pipe 1801, the other second piston plate 33 is also driven to move close to the square slide rod 24 by oil pressure.

[0062] As Figure 9 shown, the outer surface of the adjacent end of the two second piston plates 33 is fixedly installed with a push rod 32, and through the movement of the two second piston plates 33 in turn close to the square slide rod 24, the two push rods 32 are driven to move in turn close to the square slide rod 24, as Figure 9 shown, the push rod 32 on the left side of the square slide rod 24 first moves close to it, and then the push rod 32 on the right side of the square slide rod 24 moves close to it, the adjacent end of the two push rods 32 penetrates through the outer surface of the second compression cylinder 29 and the fixed block 28 and is slidingly installed with the inner wall thereof, and the adjacent end of the two push rods 32 is fixedly installed with a top head 30, the two top heads 30 are symmetrically arranged, and through the movement of the two push rods 32 in turn close to the square slide rod 24, the two top heads 30 are driven to move in turn close to the square slide rod 24;

[0063] The outer surface of the side away from the support block 22 of the two top heads 30 is provided with an inclined surface 3001, the upper surface of the other end of the square slide rod 24 is fixedly installed with a pressure plate 31, the outer surface of the side close to the support block 22 of the pressure plate 31 is symmetrically provided with two bevel angles 3101, and the two bevel angles 3101 are respectively in abutment with the two inclined surfaces 3001, as Figure 7 and Figure 9 shown, the left top head 30 will abut against the left bevel angle 3101 of the pressure plate 31 through the inclined surface 3001 thereof, thereby driving the pressure plate 31 to move upward by a distance, that is, the pressure plate 31 moves away from the limiting protrusion 23 by a distance, and then the right top head 30 will also abut against the right bevel angle 3101 of the pressure plate 31 through the inclined surface 3001 thereof, thereby driving the pressure plate 31 to move upward by a distance, at this time, the pressure plate 31 is subjected to twice extrusion, thereby moving upward by a distance twice, and through the movement of the pressure plate 31, the square slide rod 24 is driven to move away from the limiting protrusion 23, so that the limiting roller 25 at the end of the square slide rod 24 rolls and slides out of the lower surface of the limiting protrusion 23, at this time, the sleeve 16 is released from the limiting, and then under the gravity of the oil pillow 2, the sleeve 16 moves downward along the limiting slide rod 13, through the device, when the two fire extinguishing tanks 8 enter the fire extinguishing process, the oil pillow 2 can timely move away from the transformer body 1, thereby avoiding the temperature rise of the oil in the oil pillow 2 caused by the fire to cause self-ignition, and thus the damage risk of the transformer body 1 and the surrounding equipment is ensured.

[0064] In the embodiment, as Figure 5 and Figure 9 shown, the upper surface of the side away from the oil pillow 2 of the limiting plate 14 is provided with an insertion hole, and the upper surface of the lower support plate 12 is also provided with the same insertion hole, and the inner walls of the two insertion holes are symmetrically slidingly installed with two semicircular slide columns 19, the bottom ends of the two semicircular slide columns 19 are fixedly installed with a connecting plate 20 penetrating through the lower surface of the support plate 12, and the ends away from each other of the two connecting plates 20 are fixedly connected with the outer surfaces of the two fixed plates 21.

[0065] Because two fixed plates 21 move up, they will drive two semicircular sliding columns 19 to move up. When the sliding sleeve 16 moves down, it will drive the limiting cylinder 1601 to move down. The bottom end of the limiting cylinder 1601 will abut against the top end of the two semicircular sliding columns 19, thereby pressing the two semicircular sliding columns 19 to the original position. The downward movement of the two semicircular sliding columns 19 will drive the two fixed plates 21 to reset through the connecting plates 20 connected thereto, and will also drive the placement disc 1001 to reset. Through the device, it is convenient to replace the new fire extinguishing tank 8 subsequently. After the fire extinguishing tank 8 is replaced, the fixed plate 21 is reset, and the top head 30 no longer contacts the pressure plate 31. At this time, the square slide rod 24 can be freely moved, and it is convenient to manually reset the oil pillow 2. When manually resetting, the square slide rod 24 can be manually pushed, and it is convenient to reset the oil pillow 2.

[0066] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A transformer with a fire extinguishing device, characterized in that: include: A transformer body (1) is used for a power transformer in a power system, wherein an oil tank is provided inside the transformer body (1) for storing oil to cool the transformer body (1); An oil pillow (2) is used to store transformer oil and adjust the oil level of an oil tank inside the transformer body (1), wherein the oil pillow (2) is arranged above the oil tank inside the transformer body (1); A fire extinguishing assembly is used for extinguishing a fire in an oil tank inside a transformer body (1), the fire extinguishing assembly being arranged around the transformer body (1), the fire extinguishing assembly comprising two placement plates (10) fixedly mounted on an end face of the transformer body (1) close to one end of the oil pillow (2), a placement frame (11) being fixedly mounted on the upper surfaces of the two placement plates (10), a fire extinguishing tank (8) being arranged inside the two placement frames (11), one of the fire extinguishing tanks (8) storing perfluorohexanone inside, and the other fire extinguishing tank (8) storing dry powder fire extinguishing agent inside; A protective component is used to drive the oil pillow (2) away from the transformer body (1) when the transformer body (1) catches fire, and the protective component is arranged between the oil pillow (2) and the transformer body (1).

2. A transformer with a fire extinguishing device according to claim 1, characterized in that: A gas relay (101) is fixedly installed on the top of the transformer body (1) for analyzing the gas contents of hydrogen, acetylene and carbon monoxide. A connecting hose (5) is fixedly connected to the bottom of the oil pillow (2). The bottom end of the connecting hose (5) is fixedly connected to the liquid inlet end of the gas relay (101). The oil pillow (2) is connected to the oil tank inside the transformer body (1) through the connecting hose (5) and the gas relay (101).

3. The transformer with a fire extinguishing device according to claim 1, characterized in that: A pyrotechnic temperature sensor (3) is fixedly mounted on the upper surface of the transformer body (1), a conduit (6) is fixedly mounted on the top of the transformer body (1), the conduit (6) is arranged around the transformer body (1), a plurality of nozzles (7) are fixedly mounted at equal intervals on the upper surface of the conduit (6), and electromagnetic valves (801) are provided on the tops of the two fire extinguishing tanks (8), the gas outlet ends of the two electromagnetic valves (801) are fixedly connected to connecting air pipes, the gas outlet ends of the two connecting air pipes are fixedly connected to the two ends of the conduit (6), and the fire extinguishing tank (8) is connected to the interior of the conduit (6) through the connecting air pipe.

4. The transformer with a fire extinguishing device according to claim 1, characterized in that: The protection component comprises two rotating arms (4) symmetrically mounted on the upper surface of the transformer body (1), the top ends of the two rotating arms (4) are fixedly connected to the bottom of the oil pillow (2), and two support plates (12) are fixedly mounted on one end of the transformer body (1) close to the oil pillow (2) in an aligned manner, a limiting slide rod (13) is fixedly mounted between the outer surfaces of the two support plates (12), a sliding sleeve (16) is slidably mounted on the outer surface of the limiting slide rod (13) close to the top end, and a support rod (17) is rotatably mounted on the bottom of the oil pillow (2), the support rod (17) is arranged between the two rotating arms (4), and the bottom end of the support rod (17) is rotatably mounted on the outer surface of the sliding sleeve (16) away from the oil pillow (2).

5. The transformer with a fire extinguishing device according to claim 4, characterized in that: The outer surface of the limiting slide rod (13) is fixedly mounted with a limiting plate (14), the outer surface of the limiting slide rod (13) is sleeved with a first spring (15), the first spring (15) is arranged between the sliding sleeve (16) and the limiting plate (14), the lower surface of the sliding sleeve (16) is fixedly mounted with a limiting cylinder (1601), the bottom end of the limiting cylinder (1601) is against the upper surface of the limiting plate (14), and a limiting component is arranged between the sliding sleeve (16) and the support plate (12).

6. The transformer with a fire extinguishing device according to claim 5, characterized in that: The limiting assembly includes a support block (22) fixedly mounted on the lower surface of the upper support plate (12), the support block (22) being arranged on the side of the sleeve (16) close to the transformer body (1), a square slide bar (24) being slidably inserted into the outer surface of the support block (22), one end of the square slide bar (24) close to the sleeve (16) passing through the outer surface of the square slide bar (24) and being slidably mounted on the inner wall thereof, a limiting roller (25) being rotatably mounted on the inner wall of one end of the square slide bar (24) close to the sleeve (16), a limiting protrusion (23) being fixedly mounted on the outer surface of the sleeve (16) close to the limiting roller (25), and the limiting roller The wheel (25) is arranged just below the limiting protrusion (23), and the circumferential outer surface of the limiting roller (25) abuts against the lower surface of the limiting protrusion (23). The outer surface of the square slide rod (24) close to one end of the slide sleeve (16) is fixedly mounted with a retaining ring (26). The outer surface of the square slide rod (24) is sleeved with a second spring (27), one end of the second spring (27) is fixedly connected to the outer surface of the retaining ring (26), and the other end of the second spring (27) is fixedly connected to the outer surface of the support block (22). A motion component for driving the square slide rod (24) to slide is provided between the support block (22) and the placement plate (10).

7. The transformer with a fire extinguishing device according to claim 6, characterized in that: The motion assembly comprises two fixed blocks (28) symmetrically fixedly mounted on the outer surface of one side of the support block (22) relative to the sliding sleeve (16), the outer surfaces of the two fixed blocks (28) on the opposite sides are fixedly mounted with second compression cylinders (29), a gap is provided between the axes of the two second compression cylinders (29), the inner walls of the two second compression cylinders (29) are slidably mounted with second piston plates (33), the outer surfaces of the adjacent ends of the two second piston plates (33) are fixedly mounted with push rods (32), and the adjacent ends of the two push rods (32) penetrate the outer surfaces of the second compression cylinder (29) and the fixed block (28) and are slidably mounted on the inner walls thereof A plug (30) is fixedly mounted on one adjacent end of each of the two push rods (32), and the two plugs (30) are symmetrically arranged. The outer surfaces of the two plugs (30) on the side away from the support block (22) are both provided with an inclined surface (3001). A pressure plate (31) is fixedly mounted on the upper surface of the other end of the square slide rod (24), and the outer surface of the pressure plate (31) on the side close to the support block (22) is symmetrically provided with two oblique angles (3101), and the two oblique angles (3101) are respectively abutted against the two inclined surfaces (3001). A through hole (2901) is provided on the outer surface of the second compression cylinder (29) close to the plug (30).

8. The transformer with a fire extinguishing device according to claim 7, characterized in that: A contact sensor (9) is fixedly mounted on the outer surface of the transformer body (1) near one of the fire extinguishing tanks (8), and the contact sensor (9) is arranged above one of the fire extinguishing tanks (8). Circular grooves are opened on the upper surfaces of the two placement plates (10), and a placement plate (1001) is slidably mounted on the inner wall of the circular groove. A top rod (1004) is fixedly mounted on the lower surface of the placement plate (1001) at a middle position, and the bottom end of the top rod (1004) passes through the lower surface of the placement plate (10) and is slidably mounted on the inner wall thereof. A circular plate (1002) is fixedly mounted on the bottom end of the top rod (1004), and a tension spring (1003) is sleeved on the outer surface of the top rod (1004). The top end of the tension spring (1003) is fixedly connected to the lower surface of the placement plate (10), and the bottom end of the tension spring (1003) is fixedly connected to the upper surface of the circular plate (1002).

9. The transformer with a fire extinguishing device according to claim 8, characterized in that: The lower surfaces of the two placement plates (10) are fixedly mounted with a first compression cylinder (18), the inner walls of the two first compression cylinders (18) are slidably mounted with a first piston plate (1803), the lower surfaces of the two first piston plates (1803) are fixedly mounted with a piston rod (1804), the bottom ends of the two piston rods (1804) pass through the lower surface of the first compression cylinder (18) and are fixedly mounted with a fixing plate (21), the other end of the fixing plate (21) is fixedly mounted with the lower surface of the circular plate (1002), A plurality of exhaust holes (1802) are provided through the lower surface of the first compression cylinder (18), and a hydraulic pipe (1801) is fixedly connected to the outer surface of the first compression cylinder (18) near the top, and the other end of the hydraulic pipe (1801) is fixedly connected to the other end of the second compression cylinder (29). The first compression cylinder (18) is connected to the interior of the second compression cylinder (29) through the hydraulic pipe (1801), and the interiors of the first compression cylinder (18), the hydraulic pipe (1801) and the second compression cylinder (29) are filled with hydraulic oil.

10. The transformer with a fire extinguishing device according to claim 9, characterized in that: A socket is formed through the upper surface of the limit plate (14) on the side away from the oil pillow (2), and a similar socket is formed through the upper surface of the support plate (12) below. Two semi-circular smooth columns (19) are symmetrically slidably mounted between the inner walls of the two sockets. The bottom ends of the two semi-circular smooth columns (19) penetrate the lower surface of the support plate (12) and are fixedly mounted with a connecting plate (20). The ends of the two connecting plates (20) that are away from each other are fixedly connected to the outer surfaces of the two fixing plates (21).

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