Transformer explosion-proof protection device suitable for extreme environment

Abstract

The invention discloses a transformer explosion-proof protection device suitable for an extreme environment, and belongs to the field of oil-immersed transformers, the transformer explosion-proof protection device comprises a mounting rack, the upper surface of the mounting rack is fixedly connected with a transformer body, and the front side and the rear side of the upper surface of the transformer body are provided with a second binding post and a first binding post respectively; the front side and the rear side of the transformer body are fixedly connected with cooling fins. When the pressure in the transformer body reaches a certain threshold value, the piston pushes the sealing cover to move upwards, the sealing cover is arranged, the situation that the activated carbon plate is exposed in the natural environment for a long time, a large amount of dust and impurities are attached to the surface of the activated carbon plate, and consequently the activated carbon plate is blocked is avoided, and meanwhile the activated carbon is prevented from losing efficacy due to excessive dust adsorption; the efficiency of absorbing hydrogen and methane is reduced, purification and absorption are carried out through the activated carbon plate, hydrogen and methane in the gas are absorbed, pollution-free emission is carried out, and the influence of hydrogen and methane on the surrounding environment is avoided.

Description

Technical Field

[0001] The present invention relates to the field of oil-immersed transformers, and more specifically, to a transformer explosion-proof protection device applicable to extreme environments. Background Art

[0002] The oil-immersed transformer, simply referred to as a transformer, may cause internal arcing due to short circuits, overvoltages, etc., thereby ionizing the oil product and decomposing it into various combustible gases; once the internal overpressure causes the fuel tank to vent and rupture, oxygen enters, and a fire will immediately occur when encountering an open flame; at the same time, these substances may spray the fire onto nearby devices, and the fire will spread rapidly and explode, causing significant harm. After the internal pressure of the fuel tank begins to increase, the transformer usually explodes within 5 to 50 milliseconds, so transformer short circuits are very destructive.

[0003] To solve the above problems, a patent application for an invention with the publication number CN118430938A discloses an oil-immersed transformer explosion-proof pressure protection device. This patent application realizes the effect of facilitating automatic pressure relief of the box body of the waste gas collection component by setting an automatic pressure relief component, and this structure facilitates the adsorption treatment of the discharged waste gas. However, in rainy weather, rainwater will enter the interior of the waste gas collection component through the purification net, and the humid air will contact the hydraulic oil, which will reduce the insulation effect of the hydraulic oil. At the same time, it will accelerate the corrosion rate of the internal components of the transformer, there are certain safety hazards, and dust adhering to the purification net will reduce the filtration rate. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a transformer explosion-proof protection device applicable to extreme environments.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A transformer explosion-proof protection device applicable to extreme environments includes a mounting frame. The upper surface of the mounting frame is fixedly connected with a transformer body. The front and rear sides of the upper surface of the transformer body are respectively provided with a second terminal and a first terminal. The front and rear sides of the transformer body are fixedly connected with heat dissipation fins. A liquid oil collection component is arranged on one side of the mounting frame, and a purification component for exhausting gas is arranged on the liquid oil collection component.

[0007] The purification component includes a mounting cylinder fixed on the liquid oil collection component. The upper surface of the mounting cylinder is fixedly connected with a connecting frame. The upper surface of the connecting frame is fixedly connected with a filtering frame. A piston is slidably connected inside the mounting cylinder. The upper surface of the piston is fixedly connected with a top rod. The top of the top rod is fixedly connected with a sealing cover. The inner surface of the filtering frame is fixedly connected with an activated carbon plate.

[0008] Furthermore, a fixed plate is axially symmetrically and fixedly connected to the outer surface of the sealing cover. A telescopic rod is fixedly connected to the lower surface of the fixed plate. A sleeve plate is axially symmetrically and fixedly connected to the outer surface of the filter frame. A spring is sleeved on the outer surface of the telescopic rod. An electromagnet is fixedly connected to the inner surface of the connection frame. A metal sheet is fixedly connected to the upper surface of the piston.

[0009] Furthermore, the top of the ejector rod penetrates through the electromagnet and the activated carbon plate, and the ejector rod slides relative to the electromagnet and the activated carbon plate. The telescopic rod penetrates through the inner part of the sleeve plate and slides relative to it. The spring is located between the fixed plate and the sleeve plate and is fixed to both.

[0010] Furthermore, the liquid oil collection assembly includes a collection bin fixed to one side of the transformer body. A pressure relief pipe is fixedly connected to one side of the collection bin. An explosion-proof sheet is fixedly connected to the edge of the inner surface of the pressure relief pipe. A pressure detection sensor is fixedly connected to the inner surface of the pressure relief pipe. A water pump is fixedly connected to the lower surface of the collection bin. Both the output end and the input end of the water pump are provided with return pipes. One return pipe extends into the collection bin, and the other return pipe extends into the transformer body. A nitrogen spray pipe is arranged at the inner bottom of the collection bin, and the nitrogen spray pipe is connected to the nitrogen system. The output end of the water pump is connected to a one-way valve, and the one-way valve is connected to the return pipe, and the flow direction of the one-way valve is from the collection bin to the inside of the transformer body.

[0011] Furthermore, a rainproof mechanism is arranged at the edge of the lower surface of the sealing cover. The rainproof mechanism includes an annular frame fixed to the edge of the lower surface of the sealing cover. A plurality of exhaust holes are evenly arranged inside the annular frame.

[0012] Furthermore, the exhaust holes are inclined. One end of the exhaust hole close to the inner surface of the annular frame is higher than the other end. The annular frame is adapted to the filter frame.

[0013] Furthermore, a pressure relief component is arranged on one side of the upper surface of the transformer body. The pressure relief component includes a diversion pipe fixed to one side of the upper surface of the transformer body. The other end of the diversion pipe is fixedly connected to a spiral pipe. The other end of the spiral pipe is fixedly connected to a burette. The other end of the burette extends into the collection bin.

[0014] Furthermore, a dispersion component is arranged on the inner surface of the collection bin. The dispersion component includes a first annular rack fixed to the inner surface of the collection bin and support rods fixed around the inner surface of the collection bin. A circular ring is slidably connected to the outer surfaces of the four support rods. An annular groove is formed on the lower surface of the circular ring. A second annular rack is fixedly connected to the outer surface of the circular ring. A support shaft is rotatably connected to the inner surface of the circular ring. Three grid plates are evenly and fixedly connected to the outer surface of the support shaft.

[0015] Furthermore, a second gear is fixedly connected to one side of the outer surface of the support shaft, a driving motor is fixedly connected to the corner of the top of the collecting bin, and a first gear is fixedly connected to the output end of the driving motor.

[0016] Furthermore, the second gear is located on the lower surface of the first annular rack, the second gear is meshed with the first annular rack, the first gear is meshed with the second annular rack, and the support rod is located inside the annular groove and slides.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This scheme is provided with a purification component. When the pressure inside the transformer body reaches a certain threshold, the piston pushes the sealing cover upward. The setting of the sealing cover prevents the activated carbon plate from being exposed to the natural environment for a long time, causing a large amount of dust and impurities to adhere to its surface and block the activated carbon plate. At the same time, it prevents the activated carbon from absorbing too much dust, causing the activated carbon to fail and the efficiency of absorbing hydrogen and methane to be low. The activated carbon plate is used for purification and absorption, and the hydrogen and methane inside the gas are absorbed and discharged without pollution, avoiding the impact of hydrogen and methane on the surrounding environment.

[0018] 2. This solution is equipped with a rainproof mechanism. When gas is discharged in rainy or snowy weather, the rising sealing cover will simultaneously drive the annular frame to move upward from the inside of the filter frame, and move multiple exhaust holes from the inside of the filter frame to expose them to the outside. The gas is filtered by the activated carbon plate and discharged through multiple exhaust holes. Since the exhaust holes are arranged at an angle, rainwater cannot flow into the inside of the filter frame through the exhaust holes, which can effectively prevent rainwater from entering the collection bin in rainy weather and mixing with the transformer oil in the collection bin to affect the secondary use of the transformer oil, thereby avoiding accelerated corrosion of equipment components by moisture.

[0019] 3. In this scheme, by providing a pressure relief component, the pressure inside the transformer body gradually increases, which will prompt the gas to enter the interior of the guide tube. The gas enters the interior of the spiral tube and moves in a spiral manner, so that the oil-gas mixture fully contacts the side wall of the spiral tube, so that the oil mist gathers on the side wall of the spiral tube, and the gas smoothly passes through the spiral tube and the burette into the interior of the collecting bin. The oil mist gathers into oil droplets and also enters the interior of the collecting bin through the burette, so that the oil in the gas can be fully separated to avoid the influence of the oil mist on the surrounding environment when it is discharged along with the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3Schematic diagram of the purification component structure of the present invention Figure 1 ; Figure 4 Schematic cross-sectional structure diagram of the purification component of the present invention; Figure 5 Schematic diagram of the purification component structure of the present invention Figure 2 ; Figure 6 Schematic diagram of the liquid oil collection component structure of the present invention; Figure 7 Schematic diagram of the dispersion component structure of the present invention Figure 1 ; Figure 8 Schematic diagram of the dispersion component structure of the present invention Figure 2 。

[0021] Explanation of the reference numerals in the figure: 1. Mounting frame; 2. Heat dissipation fins; 3. First terminal; 4. Second terminal; 5. Transformer body; 6. Purification component; 61. Installation cylinder; 62. Sealing cover; 63. Fixed plate; 64. Sleeve plate; 65. Spring; 66. Filter frame; 67. Rainproof mechanism; 671. Ring frame; 672. Exhaust hole; 68. Pressure relief component; 681. Diversion pipe; 682. Spiral pipe; 683. Burette; 69. Telescopic rod; 610. Connecting frame; 611. Piston; 612. Push rod; 613. Electromagnet; 614. Metal sheet; 615. Activated carbon plate; 7. Liquid oil collection component; 71. Collection bin; 72. Pressure relief pipe; 73. Water pump; 74. Return pipe; 75. Explosion-proof sheet; 76. Pressure detection sensor; 77. Nitrogen spray pipe; 8. Dispersion component; 81. Driving motor; 82. First gear; 83. First annular rack; 84. Support rod; 85. Ring; 86. Second annular rack; 87. Grille plate; 88. Second gear; 89. Annular groove; 810. Support shaft. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 8, a transformer explosion-proof protection device applicable to extreme environments, includes a mounting frame 1. The upper surface of the mounting frame 1 is fixedly connected with a transformer body 5. The front and rear sides of the upper surface of the transformer body 5 are respectively provided with a second terminal 4 and a first terminal 3. Heat dissipation fins 2 are fixedly connected to both the front and rear sides of the transformer body 5. A liquid oil collection assembly 7 is arranged on one side of the mounting frame 1, and a purification assembly 6 for exhausting gas is arranged on the liquid oil collection assembly 7.

[0024] As Figures 3 - 5 shown, the purification assembly 6 includes a mounting cylinder 61 fixed on the liquid oil collection assembly 7. The upper surface of the mounting cylinder 61 is fixedly connected with a connecting frame 610. The upper surface of the connecting frame 610 is fixedly connected with a filtering frame 66. A piston 611 is slidably connected inside the mounting cylinder 61. The upper surface of the piston 611 is fixedly connected with a push rod 612. The top of the push rod 612 is fixedly connected with a sealing cover 62. An activated carbon plate 615 is fixedly connected to the inner surface of the filtering frame 66.

[0025] Symmetrically axially fixed on the outer surface of the sealing cover 62 are fixing plates 63. The lower surface of the fixing plates 63 is fixedly connected with telescopic rods 69. Symmetrically axially fixed on the outer surface of the filtering frame 66 are sleeve plates 64. A spring 65 is sleeved on the outer surface of the telescopic rods 69. An electromagnet 613 is fixedly connected to the inner surface of the connecting frame 610. A metal sheet 614 is fixedly connected to the upper surface of the piston 611.

[0026] The top of the push rod 612 penetrates through the inside of the electromagnet 613 and the activated carbon plate 615. The push rod 612 slides relative to the electromagnet 613 and the activated carbon plate 615. The telescopic rods 69 penetrate through the inside of the sleeve plates 64 and slide relative to each other. The spring 65 is located between the fixing plates 63 and the sleeve plates 64 and is fixedly connected to both.

[0027] As Figure 3 and Figure 6 shown, the liquid oil collection assembly 7 includes a collection bin 71 fixed on one side of the transformer body 5. One side of the collection bin 71 is fixedly connected with a pressure relief pipe 72. An explosion-proof film 75 is fixedly connected to the edge of the inner surface of the pressure relief pipe 72. A pressure detection sensor 76 is fixedly connected to the inner surface of the pressure relief pipe 72. A water pump 73 is fixedly connected to the lower surface of the collection bin 71. Both the output end and the input end of the water pump 73 are provided with return pipes 74. One return pipe 74 extends into the collection bin 71, and the other return pipe 74 extends into the transformer body 5. A nitrogen spray pipe 77 is arranged at the inner bottom of the collection bin 71. The nitrogen spray pipe 77 is connected to a nitrogen system. The output end of the water pump 73 is connected with a one-way valve, and the one-way valve is connected to the return pipe 74. The flowing direction of the one-way valve is from the collection bin 71 to the inside of the transformer body 5.

[0028] In an extremely high-temperature environment, the components inside the transformer overheat, and the insulation performance of the insulation materials on the components deteriorates or even is broken down by the current, resulting in the generation of an electric arc, causing the transformer oil to rapidly heat up and generate a large amount of gas. The main components of the gas are hydrogen and methane, which causes the internal pressure of the transformer body 5 to increase instantaneously. Excessive pressure will crush the explosion-proof film 75. At this time, the oil and gas inside the transformer body 5 instantly enter the inside of the collection chamber 71 through the pressure relief pipe 72. The oil and gas mixture enters the inside of the collection chamber 71 for oil and gas separation. The pressure detection sensor 76 detects the pressure of the transformer oil and transmits the signal to the terminal, turning on the nitrogen control system to fill nitrogen into the inside of the transformer body 5 and into the inside of the collection chamber 71, and energizing the electromagnet 613. When the oil and gas enter the inside of the collection chamber 71, the pressure inside the collection chamber 71 increases simultaneously, which will push the piston 611 to move upward inside the installation cylinder 61. The metal sheet 614 moves synchronously with the piston 611. The metal sheet 614 approaches the electromagnet 613 and is adsorbed by the electromagnet 613 to fix the piston 611. At the same time, the piston 611 pushes the sealing cover 62 upward through the ejector rod 612, opening the filter frame 66, thereby exposing the activated carbon plate 615. The setting of the sealing cover 62 prevents the activated carbon plate 615 from being exposed to the natural environment for a long time, resulting in a large amount of dust and impurities adhering to its surface, causing the activated carbon plate 615 to be blocked, and at the same time preventing the activated carbon from adsorbing too much dust and becoming ineffective, reducing the efficiency of absorbing hydrogen and methane. At this time, the inside of the collection chamber 71 communicates with the inside of the filter frame 66 and the connection frame 610. The hydrogen and methane generated by the high temperature of the transformer oil enter the inside of the filter frame 66 through the installation cylinder 61 and the connection frame 610, and are purified and absorbed by the activated carbon plate 615, absorbing the hydrogen and methane inside the gas, achieving pollution-free emission, and avoiding the impact of hydrogen and methane on the surrounding environment.‌

[0029] As Figures 4 - 5 shown, a rainproof mechanism 67 is provided at the edge of the lower surface of the sealing cover 62. The rainproof mechanism 67 includes an annular frame 671 fixed at the edge of the lower surface of the sealing cover 62, and a plurality of exhaust holes 672 are uniformly opened inside the annular frame 671.

[0030] The exhaust holes 672 are inclined. One end of the exhaust hole 672 close to the inner surface of the annular frame 671 is higher than the other end. The annular frame 671 is adapted to the filter frame 66.

[0031] When the transformer discharges gas, in case of rain or snow, when the filter frame 66 discharges gas, raindrops will fall inside the filter frame 66. Through the filter frame 66, the connecting frame 610 and the installation cylinder 61, they enter the inside of the collection bin 71, which will cause rainwater to mix with the transformer oil. The water in the transformer oil will reduce its insulation performance and increase its conductivity, which may lead to equipment failures. Therefore, a ring frame 671 is provided below the sealing cover 62. When discharging gas, the sealing cover 62 will rise synchronously with the piston 611. The sealing cover 62 will simultaneously drive the ring frame 671 to move upward from inside the filter frame 66, moving the multiple exhaust holes 672 out of the inside of the filter frame 66 to expose them to the outside. The gas is filtered through the activated carbon plate 615 and discharged through the multiple exhaust holes 672. Since the exhaust holes 672 are inclined, rainwater cannot flow through the exhaust holes 672 into the inside of the filter frame 66, which can effectively prevent rainwater from entering the inside of the collection bin 71 during rainy weather and mixing with the transformer oil inside the collection bin 71, affecting the secondary use of the transformer oil and avoiding the accelerated corrosion of equipment components by moisture; When the gas inside the transformer body 5 is exhausted, the pressure inside the transformer body 5 and the collection bin 71 becomes smaller. Since the electromagnet 613 is not energized and does not generate magnetic force, the piston 611 will not be fixed. As the pressure becomes smaller, the stretched spring 65 will pull the fixed plate 63 and the sealing cover 62 downward, causing the sealing cover 62 to reset and shield and seal the filter frame 66. At the same time, the piston 611 moves into the inside of the installation cylinder 61 for secondary sealing. When the internal pressure of the transformer body 5 reaches a certain threshold, it automatically relieves pressure and exhausts gas, avoiding the explosion caused by the internal pressure of the transformer body 5 exceeding the mechanical strength of the transformer body 5, and further improving the safety of the transformer body 5.‌

[0032] As Figure 6 shown, a pressure relief component 68 is provided on one side of the upper surface of the transformer body 5. The pressure relief component 68 includes a diversion pipe 681 fixed to one side of the upper surface of the transformer body 5. The other end of the diversion pipe 681 is fixedly connected to a spiral pipe 682. The other end of the spiral pipe 682 is fixedly connected to a burette 683. The other end of the burette 683 extends into the inside of the collection bin 71.

[0033] During the daily use of the transformer, there will be a situation of heat generation, which will cause the transformer oil to slowly heat up, resulting in the slow generation of gas in the transformer oil. The gas generated is not enough to break the explosion-proof piece 75. At this time, the gas will gather inside the transformer body 5. When the gas gathers inside the transformer body 5 to a certain volume, there will be a risk of explosion. As the gas increases, the pressure inside the transformer body 5 gradually increases, which will prompt the gas to enter the inside of the diversion pipe 681. When the gas enters the inside of the spiral pipe 682, the gas moves spirally inside the spiral pipe 682, making the oil-gas mixture fully contact the side wall of the spiral pipe 682, causing the oil mist to gather on the side wall of the spiral pipe 682. The gas then smoothly passes through the spiral pipe 682 and the burette 683 and enters the inside of the collection bin 71. The oil mist gathers into oil droplets and also enters the inside of the collection bin 71 through the burette 683, so that the oil in the gas can be fully separated, avoiding the impact of the oil mist discharged together with the gas on the surrounding environment.

[0034] As Figures 7 - 8 shown, a dispersing assembly 8 is arranged on the inner surface of the collection bin 71. The dispersing assembly 8 includes a first annular rack 83 fixed on the inner surface of the collection bin 71 and support rods 84 fixed around the inner surface of the collection bin 71. A circular ring 85 is slidably connected to the outer surfaces of the four support rods 84. An annular groove 89 is formed on the lower surface of the circular ring 85. A second annular rack 86 is fixedly connected to the outer surface of the circular ring 85. A support shaft 810 is rotatably connected to the inner surface of the circular ring 85. Three grid plates 87 are evenly and fixedly connected to the outer surface of the support shaft 810.

[0035] A second gear 88 is fixedly connected to one side of the outer surface of the support shaft 810. A driving motor 81 is fixedly connected to the corner of the inner top of the collection bin 71. An output end of the driving motor 81 is fixedly connected to a first gear 82.

[0036] The second gear 88 is located on the lower surface of the first annular rack 83, and the second gear 88 meshes with the first annular rack 83. The first gear 82 meshes with the second annular rack 86. The support rods 84 slide inside the annular groove 89.

[0037] When the internal pressure of the transformer suddenly increases, when the oil passes through the pressure relief pipe 72 and enters the inside of the collection chamber 71, the pressure detection sensor 76 transmits a signal to the terminal. The terminal turns on the drive motor 81 to make it work, driving the first gear 82 to rotate. The first gear 82 drives the second annular rack 86 meshing with it to rotate. The second annular rack 86 drives the ring 85 to stably slide outside the support rod 84. The ring 85 drives the grille plate 87 and the second gear 88 to rotate in a circular motion through the support shaft 810. When the second gear 88 rotates in a circular motion, since it meshes with the first annular rack 83, the second gear 88 and the support shaft 810 rotate self - synchronously, driving the three grille plates 87 to rotate self - synchronously. As a result, the grille plate 87 rotates in a circular motion and rotates self - synchronously around the support shaft 810. The transformer oil flows into the inside of the collection chamber 71 through the pressure relief pipe 72 and first contacts the rotating grille plate 87, causing the streamline - shaped transformer oil to be instantly broken up into small oil droplets, increasing the surface area of the transformer oil. Combined with the nitrogen gas sprayed by the nitrogen gas nozzle 77, the transformer oil droplets are quickly cooled. At the same time, the transformer oil combines with the nitrogen gas, and reduces the concentration of hydrogen and methane inside the collection chamber 71, avoiding deflagration inside the collection chamber 71.

[0038] Usage method: The transformer oil rapidly heats up to generate a large amount of gas. The main components of the gas are hydrogen and methane, causing the internal pressure of the transformer body 5 to suddenly increase. When the pressure reaches a certain level, the explosion - proof sheet 75 will be shattered. At this time, the oil - gas mixture inside the transformer body 5 instantly enters the inside of the collection chamber 71 through the pressure relief pipe 72. The oil - gas mixture enters the inside of the collection chamber 71 for oil - gas separation. The pressure detection sensor 76 detects the pressure of the transformer oil and transmits the signal to the terminal, turning on the nitrogen gas control system to fill nitrogen into the transformer body 5 and into the collection chamber 71, and energizing the electromagnet 613. When the oil - gas enters the inside of the collection chamber 71, the internal pressure of the collection chamber 71 also increases, which will push the piston 611 to move upward inside the installation cylinder 61. The metal sheet 614 moves synchronously with the piston 611. The metal sheet 614 approaches the electromagnet 613 and is adsorbed by the electromagnet 613 to fix the piston 611. At the same time, the piston 611 pushes the sealing cover 62 upward through the ejector rod 612, opening the filter frame 66. The oil - gas enters the inside of the filter frame 66 through the installation cylinder 61 and the connection frame 610, and the hydrogen and methane are purified and absorbed by the activated carbon plate 615; There is an annular frame 671 below the sealing cover 62. When discharging gas, the sealing cover 62 will rise synchronously with the piston 611. The sealing cover 62 will simultaneously drive the annular frame 671 to move upward from the inside of the filter frame 66, exposing the multiple exhaust holes 672 from the inside of the filter frame 66. The gas passes through the filtration of the activated carbon plate 615 and is discharged through the multiple exhaust holes 672. Since the exhaust holes 672 are inclined, rainwater cannot flow into the inside of the filter frame 66 through the exhaust holes 672; When the gas accumulates inside the transformer body 5 and reaches a certain concentration, there will be a risk of explosion. As the gas increases, the pressure inside the transformer body 5 gradually increases, which will prompt the gas to enter the inside of the guide tube 681. When the gas enters the inside of the spiral tube 682, the airflow moves in a spiral motion inside the spiral tube 682, so that the oil-gas mixture fully contacts the side wall of the spiral tube 682, so that the oil mist gathers on the side wall of the spiral tube 682, and the gas smoothly passes through the spiral tube 682 and the burette 683 into the inside of the collection bin 71. The oil mist gathers into oil droplets and also passes through the burette 683 into the inside of the collection bin 71, so that the oil in the gas can be fully separated.

[0039] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transformer explosion-proof protection device applicable to extreme environments, including a mounting frame (1). The upper surface of the mounting frame (1) is fixedly connected to a transformer body (5). On the front and rear sides of the upper surface of the transformer body (5), a second terminal (4) and a first terminal (3) are respectively arranged. Radiating fins (2) are fixedly connected to the front and rear sides of the transformer body (5). A liquid oil collection assembly (7) is arranged on one side of the mounting frame (1). It is characterized in that: A purification assembly (6) for exhausting gas is arranged on the liquid oil collection assembly (7). The purification assembly (6) includes a mounting cylinder (61) fixed on the liquid oil collection assembly (7). A connection frame (610) is fixedly connected to the upper surface of the mounting cylinder (61). A filter frame (66) is fixedly connected to the upper surface of the connection frame (610). A piston (611) is slidably connected inside the mounting cylinder (61). A push rod (612) is fixedly connected to the upper surface of the piston (611). A sealing cover (62) is fixedly connected to the top of the push rod (612). An activated carbon plate (615) is fixedly connected to the inner surface of the filter frame (66).

2. The explosion-proof protection device for transformers applicable to extreme environments according to claim 1, characterized in that: Symmetrically axially fixed to the outer surface of the sealing cover (62) are fixing plates (63). A telescopic rod (69) is fixedly connected to the lower surface of the fixing plates (63). Symmetrically axially fixed to the outer surface of the filter frame (66) are sleeve plates (64). A spring (65) is sleeved on the outer surface of the telescopic rod (69). An electromagnet (613) is fixedly connected to the inner surface of the connection frame (610). A metal sheet (614) is fixedly connected to the upper surface of the piston (611).

3. The explosion-proof protection device for transformers applicable to extreme environments according to claim 2, characterized in that: The top of the push rod (612) penetrates through the inside of the electromagnet (613) and the activated carbon plate (615). The push rod (612) slides with respect to the electromagnet (613) and the activated carbon plate (615). The telescopic rod (69) penetrates through the inside of the sleeve plate (64) and slides therewith. The spring (65) is located between the fixing plate (63) and the sleeve plate (64) and is fixed thereto.

4. The explosion-proof protection device for transformers applicable to extreme environments according to claim 3, characterized in that: The liquid oil collection assembly (7) includes a collection bin (71) fixed on one side of the transformer body (5). A pressure relief pipe (72) is fixedly connected to one side of the collection bin (71). An explosion-proof sheet (75) is fixedly connected to the edge of the inner surface of the pressure relief pipe (72). A pressure detection sensor (76) is fixedly connected to the inner surface of the pressure relief pipe (72). A water pump (73) is fixedly connected to the lower surface of the collection bin (71). Return pipes (74) are arranged at both the output end and the input end of the water pump (73). One of the return pipes (74) extends into the collection bin (71), and the other return pipe (74) extends into the transformer body (5). A nitrogen spray pipe (77) is arranged at the inner bottom of the collection bin (71). The nitrogen spray pipe (77) is connected to a nitrogen system. The output end of the water pump (73) is connected to a one-way valve, and the one-way valve is connected to the return pipe (74). The flow direction of the one-way valve is from the collection bin (71) to the inside of the transformer body (5).

5. The explosion-proof protection device for transformers applicable to extreme environments according to claim 4, characterized in that: A rainproof mechanism (67) is provided at the edge of the lower surface of the sealing cover (62). The rainproof mechanism (67) includes an annular frame (671) fixed to the edge of the lower surface of the sealing cover (62), and a plurality of exhaust holes (672) are evenly formed inside the annular frame (671).

6. The explosion-proof protection device for transformers applicable to extreme environments according to claim 5, characterized in that: The exhaust holes (672) are inclined. One end of the exhaust hole (672) close to the inner surface of the annular frame (671) is higher than the other end. The annular frame (671) is adapted to the filter frame (66).

7. The explosion-proof protection device for transformers applicable to extreme environments according to claim 6, characterized in that: A pressure relief component (68) is provided on one side of the upper surface of the transformer body (5). The pressure relief component (68) includes a diversion pipe (681) fixed to one side of the upper surface of the transformer body (5). The other end of the diversion pipe (681) is fixedly connected to a spiral pipe (682). The other end of the spiral pipe (682) is fixedly connected to a burette (683), and the other end of the burette (683) extends into the collection bin (71).

8. The explosion-proof protection device for transformers applicable to extreme environments according to claim 7, characterized in that: A dispersing component (8) is provided on the inner surface of the collection bin (71). The dispersing component (8) includes a first annular rack (83) fixed to the inner surface of the collection bin (71) and support rods (84) fixed to the four circumferences of the inner surface of the collection bin (71). A circular ring (85) is slidably connected to the outer surfaces of the four support rods (84). An annular groove (89) is formed on the lower surface of the circular ring (85). A second annular rack (86) is fixedly connected to the outer surface of the circular ring (85). A support shaft (810) is rotatably connected to the inner surface of the circular ring (85). Three grid plates (87) are evenly and fixedly connected to the outer surface of the support shaft (810).

9. The explosion-proof protection device for transformers applicable to extreme environments according to claim 8, characterized in that: A second gear (88) is fixedly connected to one side of the outer surface of the support shaft (810). A driving motor (81) is fixedly connected to the corner of the inner top of the collection bin (71). The output end of the driving motor (81) is fixedly connected to a first gear (82).

10. The explosion-proof protection device for transformers applicable to extreme environments according to claim 9, wherein: The second gear (88) is located on the lower surface of the first annular rack (83). The second gear (88) meshes with the first annular rack (83). The first gear (82) meshes with the second annular rack (86). The support rods (84) are slidably located inside the annular groove (89).

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