An explosion-proof gas-insulated power transformer

Abstract

The invention provides an explosion-proof gas-insulated power transformer, which relates to the technical field of power transformers and comprises: an installation side column, an assembly side frame, a bearing support and a closed box frame; the side of the installation side column is provided with an assembly side groove; the assembly side frame is installed on both sides of the installation side column by welding, and at the same time, an assembly bearing groove is penetrated through the side of the assembly side frame, and an explosion-proof support structure is arranged inside the assembly bearing groove; the bearing support is installed on the side of both ends of the installation side column by welding, and an explosion-proof barrier structure is arranged at the bottom of the bearing support and the assembly support; the closed box frame is sleeved on the outside of the assembly matching plate; the generated force is guided to both sides by the closed box frame, and at the same time, the guiding branch pipe cooperates with the guiding sleeve pipe to guide the expanded gas, and the conveying pipe transfers the gas; the problem that most of the current gas-insulated power transformers do not have an external protective structure and the transformer is prone to explosion due to faults and the like when the internal protective gas is insufficient is solved.

Description

Technical Field

[0001] The invention relates to the technical field of power transformers, and in particular to an explosion-proof gas-insulated power transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, the secondary coil and the iron core (magnetic core). Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. Transformers can be divided into distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers, etc. according to their uses.

[0003] However, the gas-insulated power transformers currently used are insulated and protected by internally filled gas, and most of them do not have an external protection structure. When the protective gas inside the transformer is insufficient, the transformer is prone to explosion due to faults and other reasons, which in turn reduces the safety of the gas-insulated power transformer and affects the applicability of the transformer for long periods of time without maintenance. Summary of the invention

[0004] In view of this, the present invention provides an explosion-proof gas-insulated power transformer, which has an explosion-proof support structure, an explosion-proof barrier structure, and a closed box frame, thereby solving the problem that most current gas-insulated power transformers do not have an external protective structure, and when the internal protective gas is insufficient, the transformer is prone to explosion due to malfunctions and the like.

[0005] The present invention provides an explosion-proof gas-insulated power transformer, which specifically comprises: a mounting side column, an assembly side frame, a bearing support and a closed box frame;

[0006] The side of the mounting side column is provided with an assembly side groove, and a supporting column is installed on the inner side of the assembly side groove, and an assembly seat plate is installed on the bottom end of the supporting column by welding; the assembly side frame is installed on both sides of the mounting side column by welding, and assembly support blocks are integrally provided at both ends of the side of the mounting side frame. At the same time, an assembly groove is penetrated through the side of the mounting side frame, and an explosion-proof support structure is provided on the inner side of the assembly groove; the bearing support is installed on the side of both ends of the mounting side column by welding, and an assembly support is installed at one end of the bearing support. At the same time, a preset opening is penetrated through the inner side of the assembly support, and an explosion-proof barrier structure is provided at the bottom of the bearing support and the assembly support, and the explosion-proof barrier structure includes a closed support plate, which is installed on the bottom of the bearing support and the assembly support, and at the two ends of the bottom of the closed support plate, an assembly plate is integrally provided; the closed box frame is sleeved on the outside of the assembly plate, and at the same time, installation sleeve frames are provided at both ends of the inner side of the closed box frame, and positioning transformer structures are provided on the sides of the closed box frame and the installation sleeve frame.

[0007] Optionally, the mounting side column is further provided with: a locking opening, an assembly support hole, a locking bolt and a positioning support block;

[0008] The locking opening is opened through both ends of the inner side of the assembly side groove; the assembly support holes are opened through both ends of the side surfaces of the support column; the locking bolt is rotatably arranged on the inner side of the assembly support hole, and the locking bolt is arranged on the inner side of the locking opening; the positioning support blocks are installed on both sides of the bottom end of the support column by welding.

[0009] Optionally, the assembly side frame is further provided with: a buffer support tube, a bearing inner cavity, a conveying pipe and a discharge opening;

[0010] The buffer support tube is installed on the side of the assembly support block; the bearing inner cavity is opened on the inner side of the buffer support tube; the conveying pipe is integrally arranged on the side of one end of the buffer support tube; and the discharge opening is penetrated and opened on the side of the other end of the buffer support tube.

[0011] Optionally, the explosion-proof support structure further comprises: a support spring, a closed support frame, a sliding sleeve column, a closed support block, a transmission sleeve block and a docking support column;

[0012] The supporting spring is installed on the inner side of the bearing inner cavity; the closed support frame is installed on one end of the inner side of the bearing inner cavity; the sliding sleeve is slidably arranged on the inner side of the closed support frame; the closed support block is integrally arranged on one end of the sliding sleeve, and the closed support block is arranged on the inner side of the bearing inner cavity; the transmission sleeve is sleeved on the outer side of the other end of the sliding sleeve, and the transmission sleeve is connected to the closed box frame; the docking pillar is slidably arranged on the inner side of one end of the two sets of sliding sleeves.

[0013] Optionally, the bearing support is further provided with: a receiving slot, a threaded support tube, a positioning opening, a closed pressing frame, a closed pressing port and an assembly screw tube;

[0014] The storage slot is opened at the top of the assembly support; the threaded support tube is installed on the inner side of the closed support plate; the positioning opening is opened through the side of the threaded support tube; the closed pressure frame is sleeved on the outer side of the threaded support tube; the closed pressure port is opened through the side of the closed pressure frame; the assembly screw barrel is rotatably set at the top of the closed pressure frame, and the assembly screw barrel is sleeved on the outer side of the threaded support tube.

[0015] Optionally, the explosion-proof barrier structure further comprises: a supporting side seat, a sealing rubber strip A, a docking hole and a locking side protrusion;

[0016] The supporting side seats are integrally arranged at the bottom of both ends of the assembly support; the sealing strip A is installed at both ends of the bottom of the closed support plate; the docking holes are opened through the inner side of the closed support plate; and the locking side protrusions are integrally arranged on both sides of the assembly supporting plate.

[0017] Optionally, the closed box frame is further provided with: an assembly groove, a docking side groove, a drainage branch pipe, a drainage sleeve, a filling pipe and a sealing strip B;

[0018] The assembly groove is opened through the inner side of the closed box frame; the docking side groove is opened through the side of the assembly groove; the drainage branch pipe is installed on the inner side of the closed box frame; the drainage sleeve is installed at the end of the drainage branch pipe, and the drainage sleeve is sleeved on the outer side of the conveying pipe; the filling pipe is installed on the inner side of the closed box frame; the sealing strip B is installed on the top side of the closed box frame.

[0019] Optionally, the positioning transformer structure further comprises: a mounting support groove, a supporting slider, a mounting clamp, a transformer body and a lead frame;

[0020] The mounting support groove is opened through the inner side of the mounting sleeve frame; the support slider is slidably arranged on the inner side of the mounting support groove; the mounting clamp is installed on one end of the support slider by welding; the transformer body is installed on the side of the mounting clamp; and the lead frame is installed on both ends of the transformer body.

[0021] Beneficial Effects

[0022] Compared with a conventional gas-insulated power transformer, an explosion-proof gas-insulated power transformer according to various embodiments of the present invention has an additional fault-proof explosion-proof structure and is safer and more applicable.

[0023] In addition, the two sets of closed boxes can be slidably docked by assembling the matching plates, and the support springs cooperate with the closed support blocks to stably support the sliding sleeves and the transmission sleeves, thereby stably docking the two sets of closed boxes, so that the closed boxes can protect and shield the transformer components. The closed support plates cooperate with the closed rubber strips A and B to fix and block the two sides of the closed boxes, and the filling pipe can be filled with protective gas. When the transformer components deflagrate or explode due to a fault, the closed boxes can divert the generated force to both sides, and at the same time divert the support plates. The tube cooperates with the guide sleeve to guide the expanded gas, and the delivery pipe can transfer the gas, thereby pushing the sliding sleeve and the closed support block, and then pushing the support spring. The sliding sleeve cooperates with the transmission sleeve block and the docking support pillar to enable the closed box frame to expand slowly to both sides, further bearing and blocking the impact force and splashing objects, and the discharge opening can discharge the guided gas when the support spring reaches the support limit, thereby preventing the closed box frame from being damaged due to impact collision, and further improving the applicability and safety of the device.

[0024] In addition, the transmission line can be connected through the lead frame, and the assembly screw barrel cooperates with the threaded support barrel to push the closed pressure frame, so that the threaded support barrel cooperates with the closed pressure port to receive and press the wiring, thereby performing a sealed assembly, and the installation support groove cooperates with the supporting slider to position and load the transformer body, so that the transformer body can perform stable transformer operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0026] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0027] In the attached picture:

[0028] Figure 1 It shows a schematic diagram of the overall assembly structure of the device according to an embodiment of the present invention;

[0029] Figure 2 It shows a bottom view structural diagram of the overall assembly of the device according to an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the mounting side column assembly structure according to an embodiment of the present invention is shown;

[0031] Figure 4 A schematic diagram of the assembly structure of a buffer support tube according to an embodiment of the present invention is shown;

[0032] Figure 5 It shows a schematic diagram of the main structure of the bearing support assembly according to an embodiment of the present invention;

[0033] Figure 6 It shows a bottom view structural diagram of the bearing support assembly according to an embodiment of the present invention;

[0034] Figure 7 It shows a schematic diagram of the main structure of the closed box frame assembly according to an embodiment of the present invention;

[0035] Figure 8 A bottom view structural diagram of a closed box frame assembly according to an embodiment of the present invention is shown.

[0036] Reference numerals list

[0037] 1. Install the side column;

[0038] 101, assembly side groove; 102, locking opening; 103, support column; 104, assembly support hole; 105, locking bolt; 106, positioning support block; 107, assembly seat plate;

[0039] 2. Assemble the side frame;

[0040] 201, assembly support block; 202, assembly loading slot; 203, buffer support tube; 204, load-bearing inner cavity; 205, delivery pipe; 206, discharge opening; 207, support spring; 2071, closed support frame; 2072, sliding sleeve column; 2073, closed support block; 2074, transmission sleeve block; 2075, docking support column;

[0041] 3. Bearing support;

[0042] 301, assembly support; 302, storage slot; 303, preset opening; 304, threaded support tube; 305, positioning opening; 306, closed pressure frame; 307, closed pressure port; 308, assembly screw tube; 309, supporting side seat; 3091, closed support plate; 3092, closed rubber strip A; 3093, docking hole; 3094, assembly plate; 3095, locking side convex;

[0043] 4. Close the box frame;

[0044] 401, assembly groove; 402, docking side groove; 403, drainage branch pipe; 404, drainage sleeve; 405, filling pipe; 406, sealing strip B; 407, installation frame; 4071, installation branch groove; 4072, support slider; 4073, installation clamp; 4074, transformer body; 4075, lead frame. DETAILED DESCRIPTION

[0045] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0046] Example: Please refer to Figures 1 to 8 :

[0047] The present invention proposes an explosion-proof gas-insulated power transformer, comprising: a mounting side column 1, an assembly side frame 2, a bearing support 3 and a closed box frame 4;

[0048] An assembly side groove 101 is provided on the side of the installation side column 1, and a support column 103 is installed inside the assembly side groove 101, and an assembly seat plate 107 is installed on the bottom end of the support column 103 by welding; the assembly side frame 2 is installed on both sides of the installation side column 1 by welding, and assembly support blocks 201 are integrally provided at both ends of the side of the assembly side frame 2. At the same time, an assembly groove 202 is opened through the side of the assembly side frame 2, and an explosion-proof support structure is provided inside the assembly groove 202; the bearing support 3 is installed on the sides of both ends of the installation side column 1 by welding, and an assembly support 301 is installed at one end of the bearing support 3. At the same time, a preset opening 303 is opened through the inner side of the assembly support 301, and an explosion-proof barrier structure is arranged at the bottom of the bearing support 3 and the assembly support 301, and the explosion-proof barrier structure includes a closed support plate 3091, and the closed support plate 3091 is installed on the bottom of the bearing support 3 and the assembly support 301, and at the same time, the two ends of the bottom of the closed support plate 3091 are integrally provided with an assembly matching plate 3094; the closed box frame 4 is sleeved on the outside of the assembly matching plate 3094, and at the same time, the two ends of the inner side of the closed box frame 4 are provided with an installation frame 407, and the sides of the closed box frame 4 and the installation frame 407 are provided with a positioning transformer structure.

[0049] like Figures 4 to 7As shown, the assembly side frame 2 is also provided with: a buffer support tube 203, a bearing inner cavity 204, a conveying pipe 205 and a discharge opening 206; the buffer support tube 203 is installed on the side of the assembly support block 201; the bearing inner cavity 204 is opened on the inner side of the buffer support tube 203; the conveying pipe 205 is integrally arranged on the side of one end of the buffer support tube 203; the discharge opening 206 is opened through the side of the other end of the buffer support tube 203; the explosion-proof support structure also includes: a support spring 207, a closed support frame 2071, a sliding sleeve 2072, a closed support block 2073, a transmission opening 206, a transmission opening 2077, a transmission opening 206 ... The movable sleeve block 2074 and the docking support 2075; the support spring 207 is installed on the inner side of the bearing cavity 204; the closed support frame 2071 is installed on one end of the inner side of the bearing cavity 204; the sliding sleeve column 2072 is slidably arranged on the inner side of the closed support frame 2071; the closed support block 2073 is integrally arranged on one end of the sliding sleeve column 2072, and the closed support block 2073 is arranged on the inner side of the bearing cavity 204; the transmission sleeve block 2074 is sleeved on the outer side of the other end of the sliding sleeve column 2072, and the transmission sleeve block 2074 is connected to the closed box frame 4; the docking support 207 5 is slidably arranged on the inner side of one end of the two sets of sliding sleeves 2072; the explosion-proof barrier structure also includes: a supporting side seat 309, a sealing rubber strip A3092, a docking hole 3093 and a locking side protrusion 3095; the supporting side seat 309 is integrally arranged at the bottom of both ends of the assembly support 301; the sealing rubber strip A3092 is installed at both ends of the bottom of the closed support plate 3091; the docking hole 3093 is opened through the inner side of the closed support plate 3091; the locking side protrusion 3095 is integrally arranged on both sides of the assembly plate 3094; the closed box frame 4 is also provided with: an assembly groove 40 1. The butt-jointed side groove 402, the drainage branch pipe 403, the drainage sleeve 404, the filling pipe 405 and the sealing rubber strip B406; the assembly groove 401 is opened through the inner side of the closed box frame 4; the butt-jointed side groove 402 is opened through the side of the assembly groove 401; the drainage branch pipe 403 is installed on the inner side of the closed box frame 4; the drainage sleeve 404 is installed at the end of the drainage branch pipe 403, and the drainage sleeve 404 is sleeved on the outer side of the conveying pipe 205; the filling pipe 405 is installed on the inner side of the closed box frame 4; the sealing rubber strip B406 is installed on the side of the top end of the closed box frame 4;By assembling the matching plate 3094, the two groups of closed boxes 4 can be slidably docked, and the support spring 207 cooperates with the closed support block 2073 to stably support the sliding sleeve column 2072 and the transmission sleeve block 2074, so that the two groups of closed boxes 4 can be stably docked, so that the closed box frame 4 can protect and shield the transformer components. The closed support plate 3091 cooperates with the closed rubber strip A3092 and the closed rubber strip B406 to fix and block the two sides of the closed box frame 4. The filling pipe 405 can fill the protective gas. When the transformer components are deflagrated or exploded due to a fault, the closed box frame 4 can divert the generated force to both sides, and at the same time divert the branch pipe 405. 03 cooperates with the drainage sleeve 404 to dredge the expanded gas, and at the same time, the delivery pipe 205 can transfer the gas, thereby pushing the sliding sleeve 2072 and the closed support block 2073, and then pushing the support spring 207. The sliding sleeve 2072 cooperates with the transmission sleeve block 2074 and the docking support 2075 to enable the closed box frame 4 to expand slowly to both sides, further bearing and blocking the impact force and splashing objects, and the discharge opening 206 can discharge the dredged gas when the support spring 207 reaches the support limit, thereby preventing the closed box frame 4 from being damaged due to impact collision, and further improving the applicability and safety of the device. ;

[0050] like Figures 3 to 8As shown, the mounting side column 1 is also provided with: a locking opening 102, an assembly support hole 104, a locking bolt 105 and a positioning support block 106; the locking opening 102 is penetrated and opened at both ends of the inner side of the assembly side groove 101; the assembly support hole 104 is penetrated and opened at both ends of the side of the support column 103; the locking bolt 105 is rotatably arranged on the inner side of the assembly support hole 104, and the locking bolt 105 is arranged on the inner side of the locking opening 102; the positioning support block 106 is installed on both sides of the bottom end of the support column 103 by welding; the bearing support 3 is also provided with: The storage slot 302, the threaded support tube 304, the positioning opening 305, the closed pressing frame 306, the closed pressing port 307 and the assembly screw barrel 308 are provided; the storage slot 302 is provided at the top of the assembly support 301; the threaded support tube 304 is installed on the inner side of the closed support plate 3091; the positioning opening 305 is provided through the side of the threaded support tube 304; the closed pressing frame 306 is sleeved on the outer side of the threaded support tube 304; the closed pressing port 307 is provided through the side of the closed pressing frame 306; the assembly screw barrel 308 is rotatably provided at the top of the closed pressing frame 306, At the same time, the assembly screw barrel 308 is sleeved on the outside of the threaded support barrel 304; the positioning transformer structure also includes: an installation support groove 4071, a support slider 4072, an installation clamping plate 4073, a transformer body 4074 and a lead frame 4075; the installation support groove 4071 is opened through the inner side of the installation sleeve frame 407; the support slider 4072 is slidably set on the inner side of the installation support groove 4071; the installation clamping plate 4073 is installed on one end of the support slider 4072 by welding; the transformer body 4074 is installed on the side of the installation clamping plate 4073; the lead The connecting frame 4075 is installed at both ends of the transformer body 4074; the transmission line can be connected through the lead connecting frame 4075, and at the same time, the assembly screw barrel 308 cooperates with the threaded support barrel 304 to push the closed pressure frame 306, so that the threaded support barrel 304 cooperates with the closed pressure port 307 to receive and press the wiring, thereby performing a sealed assembly, and the installation support groove 4071 cooperates with the supporting slider 4072 to position and support the transformer body 4074, so that the transformer body 4074 can perform stable transformer operations.

[0051] Specific usage and function of this embodiment: In the present invention, the transformer main body 4074 is positioned and supported by installing the support groove 4071 in cooperation with the support slider 4072, the lead frame 4075 connects the power transmission line, and at the same time, the assembly screw 308 cooperates with the threaded support tube 304 to push the closed pressure frame 306, so that the threaded support tube 304 cooperates with the closed pressure port 307 to store and press the wires, the support spring 207 cooperates with the closed support block 2073 to stably support the sliding sleeve 2072 and the transmission sleeve block 2074, and the two sets of closed box frames 4 are stably docked, so that the closed box frames 4 protect and shield the transformer components, and the closed support plate 3091 cooperates with the closed rubber strip A3092 and the closed rubber strip B406 to seal the two closed box frames 4. The sides are fixedly blocked, and the filling pipe 405 is filled with protective gas. When the transformer component deflagrates or explodes due to a fault, the closed box frame 4 directs the generated force to both sides. At the same time, the directing branch pipe 403 cooperates with the directing sleeve 404 to direct the expanded gas. At the same time, the delivery pipe 205 transfers the gas, and then pushes the sliding sleeve 2072 and the closed support block 2073, and then pushes the support spring 207. The sliding sleeve 2072 cooperates with the transmission sleeve 2074 and the docking support 2075 to make the closed box frame 4 expand slowly to both sides, further bearing and blocking the impact force and splashing objects, and the discharge opening 206 discharges the directed gas when the support spring 207 reaches the support limit.

[0052] Finally, it should be noted that when describing the position of each component and the matching relationship between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such position, matching relationship, etc. are also applicable to other components / other pairs of components.

[0053] The above are merely exemplary embodiments of the present invention and are not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. An explosion-proof gas-insulated power transformer, characterized in that: include: Installing side columns (1), assembling side frames (2), bearing supports (3) and closing box frames (4); The side of the mounting side column (1) is provided with an assembly side groove (101), and a support column (103) is installed inside the mounting side groove (101), and an assembly seat plate (107) is installed at the bottom of the support column (103) by welding; the mounting side frame (2) is installed on both sides of the mounting side column (1) by welding, and both ends of the side of the mounting side frame (2) are integrally provided with assembly support blocks (201), and the side of the mounting side frame (2) is provided with an assembly groove (202) through the side, and an explosion-proof support structure is provided inside the assembly groove (202); the bearing support (3) is installed on both ends of the side of the mounting side column (1) by welding, and one end of the bearing support (3) is provided with an assembly support (30 1), a preset opening (303) is provided through the inner side of the assembly support (301), and an explosion-proof barrier structure is provided at the bottom of the bearing support (3) and the assembly support (301), the explosion-proof barrier structure includes a closed support plate (3091), the closed support plate (3091) is installed at the bottom of the bearing support (3) and the assembly support (301), and an assembly plate (3094) is integrally provided at both ends of the bottom of the closed support plate (3091); the closed box frame (4) is sleeved on the outer side of the assembly plate (3094), and an installation sleeve frame (407) is provided at both ends of the inner side of the closed box frame (4), and a positioning transformer structure is provided on the side of the closed box frame (4) and the installation sleeve frame (407); The explosion-proof support structure also includes: a support spring (207), a closed support frame (2071), a sliding sleeve column (2072), a closed support block (2073), a transmission sleeve block (2074) and a docking support column (2075); the support spring (207) is installed on the inner side of the bearing inner cavity (204); the closed support frame (2071) is installed on one end of the inner side of the bearing inner cavity (204); the sliding sleeve column (2072) is slidably arranged on the closed support frame (2 071); the closed support block (2073) is integrally arranged at one end of the sliding sleeve column (2072), and the closed support block (2073) is arranged at the inner side of the bearing inner cavity (204); the transmission sleeve block (2074) is sleeved on the outer side of the other end of the sliding sleeve column (2072), and the transmission sleeve block (2074) is connected to the closed box frame (4); the docking support column (2075) is slidably arranged on the inner side of one end of the two sets of sliding sleeve columns (2072); The explosion-proof barrier structure also includes: a supporting side seat (309), a sealing rubber strip A (3092), a docking hole (3093) and a locking side protrusion (3095); the supporting side seat (309) is integrally arranged at the bottom of both ends of the assembly support (301); the sealing rubber strip A (3092) is installed at both ends of the bottom of the closed support plate (3091); the docking hole (3093) is opened through the inner side of the closed support plate (3091); and the locking side protrusion (3095) is integrally arranged at both sides of the assembly support plate (3094).

2. An explosion-proof gas-insulated power transformer as claimed in claim 1, characterized in that: The mounting side column (1) is also provided with: a locking opening (102), an assembly support hole (104), a locking bolt (105) and a positioning support block (106); The locking opening (102) is formed through the two ends of the inner side of the assembly side groove (101); the assembly support hole (104) is formed through the two end sides of the support column (103); the locking bolt (105) is rotatably arranged inside the assembly support hole (104), and the locking bolt (105) is arranged inside the locking opening (102); the positioning support block (106) is installed on both sides of the bottom end of the support column (103) by welding.

3. An explosion-proof gas-insulated power transformer as claimed in claim 1, characterized in that: The assembly side frame (2) is also provided with: a buffer support tube (203), a bearing inner cavity (204), a conveying pipe (205) and a discharge opening (206); The buffer support tube (203) is installed on the side of the assembly support block (201); the bearing inner cavity (204) is opened on the inner side of the buffer support tube (203); the delivery pipe (205) is integrally arranged on the side of one end of the buffer support tube (203); and the discharge opening (206) is opened through the side of the other end of the buffer support tube (203).

4. An explosion-proof gas-insulated power transformer as claimed in claim 1, characterized in that: The bearing support (3) is also provided with: a receiving slot (302), a threaded support cylinder (304), a positioning opening (305), a closed pressing frame (306), a closed pressing port (307) and an assembly screw cylinder (308); The storage slot (302) is provided at the top of the assembly support (301); the threaded support tube (304) is installed on the inner side of the closed support plate (3091); the positioning opening (305) is provided through the side of the threaded support tube (304); the closed pressing frame (306) is sleeved on the outer side of the threaded support tube (304); the closed pressing port (307) is provided through the side of the closed pressing frame (306); the assembly screw barrel (308) is rotatably provided at the top of the closed pressing frame (306), and the assembly screw barrel (308) is sleeved on the outer side of the threaded support tube (304).

5. An explosion-proof gas-insulated power transformer as claimed in claim 3, characterized in that: The closed box frame (4) is also provided with: an assembly groove (401), a docking side groove (402), a drainage branch pipe (403), a drainage sleeve (404), a filling pipe (405) and a sealing rubber strip B (406); The assembly sleeve (401) is formed through the inner side of the closed box frame (4); the docking side groove (402) is formed through the side of the assembly sleeve (401); the drainage branch pipe (403) is installed on the inner side of the closed box frame (4); the drainage sleeve (404) is installed at the end of the drainage branch pipe (403), and the drainage sleeve (404) is sleeved on the outer side of the conveying pipe (205); the filling pipe (405) is installed on the inner side of the closed box frame (4); and the sealing strip B (406) is installed on the top side of the closed box frame (4).

6. An explosion-proof gas-insulated power transformer as claimed in claim 5, characterized in that: The positioning transformer structure also includes: a mounting support groove (4071), a supporting slider (4072), a mounting clamping plate (4073), a transformer body (4074) and a lead frame (4075); The mounting support groove (4071) is opened through the inner side of the mounting sleeve frame (407); the support slider (4072) is slidably arranged on the inner side of the mounting support groove (4071); the mounting clamping plate (4073) is mounted on one end of the support slider (4072) by welding; the transformer body (4074) is mounted on the side of the mounting clamping plate (4073); and the lead frame (4075) is mounted on both ends of the transformer body (4074).

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